Database Users

Activesync: Unknown device

Hi all,
It's been a while, but I am back with HD2. I have a problem. I have win7 business on all off my computers, I instaled latest activesync, but I keep getting error connection. When installing drivers, I get the unknown device, so instalation failed.
Not even bluetooth recognition works.
Any suggestions, please?

vid200 said:
Hi all,
It's been a while, but I am back with HD2. I have a problem. I have win7 business on all off my computers, I instaled latest activesync, but I keep getting error connection. When installing drivers, I get the unknown device, so instalation failed.
Not even bluetooth recognition works.
Any suggestions, please?
Click to expand...
Click to collapse
If you are using Windows 7 Business, I would guess you mean you are using Windows Mobile Device Center, yes? In Windows Device Manager are you set up to automatically download drivers? Are you getting any errors in the Sync Center? There is a lot of information you have to supply before anyone can troubleshoot the problem you are having.
There are a lot of steps you can take, most of which you can find by doing a search of XDA. If that fails, then come back with a more detailed explanation of what you have done, and people will try to help troubleshoot for you.

Thanks for looking,
and yes I have been searching a lot for information allready before I made a new thread.
I have win7 business and yes it does download drivers automaticly.
I will try and search for manual driver setup, but would be very thankful if any of you could give me some hints.

vid200 said:
Thanks for looking,
and yes I have been searching a lot for information allready before I made a new thread.
I have win7 business and yes it does download drivers automaticly.
I will try and search for manual driver setup, but would be very thankful if any of you could give me some hints.
Click to expand...
Click to collapse
In Device Manager you can click on Portable Devices and see if you see your HD2 there, if you do, then right click on it. You can find options to manually install drivers. If that does not work, in the Mobile Device Center you can configure how the center is supposed to connect to your HD2. Have you tried that yet? Also, make sure you are not using a USB hub for connections. You can try changing USB ports to try to reinstall drivers.

I am trying hard, this is the error I get:
P.S.: in activesync all options are on, so no problems there, but I have tried all of them.

In that case, try uninstalling the device in Device Manager, and starting over again. It does seem to be a driver problem. Another trick you can try is on the HD2, under Settings, USB to PC, try unticking Enable advanced network functionality, and then try to reinstall the drivers.
Another thing you can try is deleting the partnership in Windows Mobile Device Center and creating a new partnership.

Is there a wa I could find the driver somewhere and install it myself?

Not beeing able to find the right one...

vid200 said:
Not beeing able to find the right one...
Click to expand...
Click to collapse
In the Leo ROM forum the thread on MTTY has some Windows 7 drivers you can download I believe, but that will take awhile.
Are you using Win7 32 or 64 bit?

win7 32 bit. I tried to download them through windows update, but I got an error as well.
So I am on a quest for drivers....

vid200 said:
win7 32 bit. I tried to download them through windows update, but I got an error as well.
So I am on a quest for drivers....
Click to expand...
Click to collapse
If you are familiar with computers, you can try this with Win7 drivers you download for HD2.
You did try uninstalling your device in Device Manager, and trying another USB port to install it on? It seems really odd that Win7 is not finding the right drivers for you, and that persists even after you uninstall and reinstall the device.

No luck so far, any more ideas?

Update:
I tried the same thing on another laptop, same specs, same win7 business, worked like a charm.
So must be this win7 problem I think. Any ideas what to do? I can't remove mobile device center, so I could try and reinstall it. The icons stay in my control panel.

Anybody?
I just can't imagine this is only happening to me.

vid200 said:
Anybody?
I just can't imagine this is only happening to me.
Click to expand...
Click to collapse
Did you have any luck yet in solving the problem?

Nope my dear helper,
I found out this is windows7 problem. I still get the first error can't install device driver, because the device is not installed on the computer.
Something must be wrong, but I was getting a head, network driver installed fine, windows mobile device program runs fine, I made a clean install with register delete etc...
I just can' seem to find this to work.

i had some problem the first time i plugged my HD2 on win7 64 ultim.
nothing happened, no activesync, no nothing...
i opened sync center, nothing...
windows updates found me windows mobile device center with upgrade devices, the thing installed but all still worked bad, impossible to activesync, no driver for my HD2, and i know nothing about phones and windows, it's my first windows mobile.
so after hours of fighting, i decided to DL the app windows mobile device center on microsoft download website, then i installed the thing and oh miracle, my HD2 was detected, the app Win M D Center was asking me now with the pic of my hd2 in the prog to chose between settings as the first thing installed by windows update always froze at win mob device center splash screen...
i resume here but it took me the all afternoon to finally resolve this problem.
something went wrong with windows update install and to reinstall the all app was the easy way to fix the activesync problem.

If you did already re-download Windows Mobile Device Center and that did not work on the one recalcitrant computer, maybe you might need to update your BIOS or download the latest drivers for you motherboard. Sometimes problems can crop up if the computer does not have the most updated BIOS and motherboard drivers. How old is the computer you are using?

Well, after calling microsoft support and HTC support and doing for 36 hours nothing but trying I finally reinstalled my hole system. So new clean install of windows 7 business and it works like acharm. Where did it went wrong, I don't know, there had to be some register issue I think. Windows mobile center worked ok, the connection with the phone worked, but just not recognizing the device. Well I would of done the instalation sooner, If I knew this one is gonna be so hard to do.

vid200 said:
Well, after calling microsoft support and HTC support and doing for 36 hours nothing but trying I finally reinstalled my hole system. So new clean install of windows 7 business and it works like acharm. Where did it went wrong, I don't know, there had to be some register issue I think. Windows mobile center worked ok, the connection with the phone worked, but just not recognizing the device. Well I would of done the instalation sooner, If I knew this one is gonna be so hard to do.
Click to expand...
Click to collapse
Well, glad you finally solved your problem, and that this time the blame was not just placed on HTC or the Leo. Sad though that you had to go through so much to get the darn thing to work. I just installed a new operating system for my neighbor, and there is still more work to do on it. Not a fun thing to do.

Help - Kies will not link to phone

I have installed the letest version of Kies (Kies_1.5.1.10071_32). When I try to link the phone to pc in Samsung Kies mode there is no reaction from the pc.
If I connect in Mass storage mode I can see 2 drives in windows explorer.
I have Un-installed Kies, rebooted and re-installed.
I have removed the drivers that were installed and retried.
I tried to contact Samsung support. Their response was:
1. De-install.
2. Reboot
3. Remove USB drivers.
4. Install Kies.
5. Re-check by connect.
when advised this did not work and that I had tried on another computer with same results I was told that there was a 'configuration problem'
They do NOT support configuration problems.
I said that problem appears to be that no drivers is being loaded that is compatible. Their response was 'we do not support'
They said could try format pc hard drive and reload Windows then hard reset phone.
Can any one help.
I am running Windows 7 Home Premium
PC is Samsung laptop R580. (yes I know but still not supported).
In advance of any help I thank you.

I had a similar issues earlier. My SGS would ay it was going into Kies mode then flash back to the home screen, then back to kies mode. This was both on my Win 7 and XP PCs.
I had to use Odin to totally reinstall the firmware.

MotoBorg said:
I have installed the letest version of Kies (Kies_1.5.1.10071_32). When I try to link the phone to pc in Samsung Kies mode there is no reaction from the pc.
If I connect in Mass storage mode I can see 2 drives in windows explorer.
I have Un-installed Kies, rebooted and re-installed.
I have removed the drivers that were installed and retried.
I tried to contact Samsung support. Their response was:
1. De-install.
2. Reboot
3. Remove USB drivers.
4. Install Kies.
5. Re-check by connect.
when advised this did not work and that I had tried on another computer with same results I was told that there was a 'configuration problem'
They do NOT support configuration problems.
I said that problem appears to be that no drivers is being loaded that is compatible. Their response was 'we do not support'
They said could try format pc hard drive and reload Windows then hard reset phone.
Can any one help.
I am running Windows 7 Home Premium
PC is Samsung laptop R580. (yes I know but still not supported).
In advance of any help I thank you.
Click to expand...
Click to collapse
Is your W7 x64 or x32?
This topic should be made sticky. I had the same problem too.

I have noticed on some other sites that people seem to say that a previous version of Kies may work. Does any one have access to previous versions.
One site suggested version 1.5.1.10056.

Sorry forgot that part. It is 32 bit.
In case it helps list of apps installed, other than standard: (But do not think any will interfer as I am on the 'idle' or home screen after close all.
# Advanced Task
# Air Control
# Bump
# ES File Explorer
# Jewels
# Klaxon
# Labyrinth
# MeteorLite
# Motris
# Setting Profiles Full
# Smooth Calendar
# System
# tCalendar
# Tower Raiders
# Tricorder
# TV Guide UK Pro
# Unit Converter
# UNO
Any help greatfully received - Many thanks to rkantos and chrisduffer for quick updates.
If I find anything else out will post here. Some one else is always having the same problem. If I can ever help I always share my experience and solutions.
Thanks.

Same issue here. Formatting my PC didn't solve the issue (I needed to do it anyway, thankfully).

Are you using a different launcher perhaps? Make sure you have touchwiz set as the default launcher or kies will not connect to the phone.

Have just found a message on the Samsung community site.
The pertinent message is:
Hi,
At the moment there is a connectivity issue between the phone and the software.The software will only pick up the memory card,if using one, but not the phone memory.The issue has been raised to the headoffice and a resolution is expected soon in the regard.
Click to expand...
Click to collapse
This is dated 21/6/2010
link to page is:
http://forumuk.samsungmobile.com/PostsList.aspx?ForumPostID=200454

The only apps installed are per above. I found that the installed launcher (touch-wiz) works ok for me and am happy with it. (well someone has to )
Any further advice?

connection to keis can be easily fixed
I had this problem too. It was caused because only in idle mode of the Samsung home rancher can keis connect. You may have installed a different launcher. Try the following:
Put use to keis mode in settings
download home switcher from the market
run home switcher an set touchwiz as default home
Reboot phone (task killing other launchers don't work for me.)
make you phone is in the home screen - press home to get there
now connect the cable with keis running on pc
sync everything you need to
In future I suggest you move all contact to Google so they sync over the air and you'll no longer need keis. crappy software!

Tried suggested by ryukent and did not seem to work for me.
I have now decided to give up on Kies and use alternate software.
# Google for contacts
# Use MTP mode for devise management.
# Sync music with MediaMonkey

Where did you get that version of kies? From samsung-firmware-webs.com?
I think that's not an official release and It seems that it has connection issues.
Kies tells me the latest version is 1.5.1.10062

according to the website it's 1.5.1.10071_32
download-link at the samsung apps (http://www.samsungapps.com/about/onPc.as): http://img.samsungapps.com/support/Kies_1.5.1.10071_32.exe

emelie said:
according to the website it's 1.5.1.10071_32
download-link at the samsung apps (http://www.samsungapps.com/about/onPc.as): http://img.samsungapps.com/support/Kies_1.5.1.10071_32.exe
Click to expand...
Click to collapse
Strange then why does Kies not find the update like it usually does?!? Those with connection issues I would still give the older version a shot.

Quick Question, I'm in the US, but using the Euro SGS. When installing kies, I should select UK instead of US, correct? Or does it not matter?

INeedYourHelp said:
Quick Question, I'm in the US, but using the Euro SGS. When installing kies, I should select UK instead of US, correct? Or does it not matter?
Click to expand...
Click to collapse
Doesn't matter. Kies "location" is basically for installing of Samsung Apps as it displays apps for your region only. However, since there are no apps from Samsung (other than the default already on the phone) it doesn't matter.
I chose UK on desktop and US on laptop if u were wondering...no difference (that i can tell at least)

..i suggest you skip kies.. not a good application at the moment.
..what I do is to extract the installer and copy the USB driver from my temp folder in windows 7.
..install the driver and you are set.. your phone will be detected.. you can now use drag and drop method or 3rd part application to transfer media or applications to your phone.
..as per "ryukent", make sure you have the TW Launcher set as default and use Home Switcher.. very useful app.
..and if your issue is something where your phone is not detected even if you have TouchWiz enabled and the phone is always trying to connect but never successful.. it might be the time to perform a "format" on the Internal SD card and "restore" the phone to Factory Default.

Kies will not work once you have installed too many application in your SGS. But it will work well once you reset your SGS to default setting.
or
Try to take out and put back the USB till it can detect.
Check it out

I have the same problem. It's clearly to do with either an app or setting in the phone, possibly media causing the phone to fail to connect to kies.
At home Vista 32 will cause MTP application to continually crash to the touchwiz UI and then rerun MTP application ad nauseum. I have a totally stock SGS, no launchers nothing. This is a BUG on the phone software.
At work, (XP 32) the launcher simply says initialising and sits there forever.
I have raised a support email with samsung but I haven't heard anything back yet. I reset my phone once to make it work again, but I'm not going to do that again, I finally have the config the way I want it and all my contacts in the right spot.

Drivers
I also had some trouble in the beginning. But I loaded new drivers and now it connects to Kies every time. I have Windows 7 64 bit at home and Vista 32 bit at work. Both work fine. Found the drivers when I googled this problem.

[Q] Kies Issues

I am having trouble connecting my i5801 to my pc using the USB cable.
Initially when i had a 2GB micro sdcard on the phone it used to give me trouble connecting to the PC very often and it used to take me atleast 6-7 tries to establish the connection.
However since i have put the 32GB micro sdcard it absolutely refuses to connect to Kies.
The phone has no issues connecting to Kies with an sdcard, it does so within seconds.
Kies is updated and installed properly with the latest version.
Both sdcards are functioning properly without any issues (well, apart from this atleast). Both are detected easily while using the memory card reader seperately.
I have tested the usb connection across 2 different computers with same issues.

android_murphy said:
I am having trouble connecting my i5801 to my pc using the USB cable.
Initially when i had a 2GB micro sdcard on the phone it used to give me trouble connecting to the PC very often and it used to take me atleast 6-7 tries to establish the connection.
However since i have put the 32GB micro sdcard it absolutely refuses to connect to Kies.
The phone has no issues connecting to Kies with an sdcard, it does so within seconds.
Kies is updated and installed properly with the latest version.
Both sdcards are functioning properly without any issues (well, apart from this atleast). Both are detected easily while using the memory card reader seperately.
I have tested the usb connection across 2 different computers with same issues.
Click to expand...
Click to collapse
i also had problems with my kies.. my phone could never be connected to kies... contacted samsung... they said me to update my windows vista... i thought it to be weird but decided to give it a try..
removed kies.. updated my vista... downloaded latest version of kies... installed.. since then there are no problems...
u too give a try... who says...!!!

I once had the same problem with an 8GB card.
Someone on this forum told me to delete the files with very long names... I did and Kies worked fine again. (I don't know the max lenght of the filenames...)

Did what you guys said, the problem still persists.
It works properly in the Mass Storage mode but not in the Kies mode.
Any more ideas?

Kies 2 beta is out, and here is the link if you wish to take the plunge:
http://www.samsunghub.com/2010/12/22/samsung-kies-2-beta-available-for-download/

ROLY5573 said:
Kies 2 beta is out, and here is the link if you wish to take the plunge:
Click to expand...
Click to collapse
It says on the link you provided that it does not support many devices. I am unable to find info on whether i5801 is supported or not. Are you using it? Is it supported?

android_murphy said:
It says on the link you provided that it does not support many devices. I am unable to find info on whether i5801 is supported or not. Are you using it? Is it supported?
Click to expand...
Click to collapse
It doesn't support i5800, so, I think it doesn't support also i5801...

like is the when install new kies,the new driver is not install,old driver not have unstall..
you need to unstall the samsung driver first ,then install new kies with new samsung driver

Kies works properly on my 5801.. I had to update my windows..i think the version of dotnet framework is important...
Sent from my GT-I5801 usin0g XDA App

Solved It!
After a few days of breaking my head over my phone finally managed to solve the problem.
Whenever i connect the usb to the phone there is an option that comes up in the notification bar asking me to "Mount" the phone. So before clicking on the connect via Samsung Kies option i had to scroll down down the notification bar, click on Mount and only after doing that, when i click on Samsung Kies, it connects easily. Doesn't work in the reverse order. And the mount option is not a popup just sits their silently in the notification bar.
Anyway thanx for all who tried to help. My question is why it doesn't mount it automatically?

Kies 2 is now out of beta!
The new Kies 2 is out. I have tried it and it works fine on Windows 7 32-bit. The SD card still needs to be unmounted, though. Here is the link:
http://www.samsunghub.com/2011/01/06/kies-2-moves-out-of-beta/
No driver issues! Looks very much like a step in the right direction.

So does it now detect i5800/1?

thaaaaank you

Kies 2 is now out of beta!
TekkenLaw said:
So does it now detect i5800/1?
Click to expand...
Click to collapse
As far as I can tell, kies 2 does not have any driver problems. I have installed it on XP and Windows 7 32-bit. It uninstalls the old Kies and during installation, installs new drivers.

Kies on W7 pro 64bit

I am using W7 64bit pro. I can install Kies with no problems, but when I connect the phone (sgs II) I get an error message that The driver did not install correctly. Of course I cannot connect to Kies, thoug I can browse the internal and external card content. No advice worked, tryed to reinstall, use virtual XP 32b, etc...
It works on my desktop 32b but I cannot read the phone numbers, but I need it on my laptop which is running W7 64b pro. Any ideas?

Install Drivers
Open kies and then in the menu bar on top of kies select tools and install drivers.

Tryed this. Does not work.

If the above does not work for you try this.
Run Kies as administrator.
When installing Kies did you follow the instructions to the letter?
Reason I ask Im running Win 7 64 and have no issues with KIES.
Go to Samsung.com and download the Kies from there to your PC.
Uninstall the current one from PC along with any drivers reboot PC.
Now install new KIES without fone connected and follow the instructions.
WHen asked to connect fone do so and not before.

Kies requires motherboard USB port and does not like Laptops .
jje

JJEgan said:
Kies requires motherboard USB port and does not like Laptops .
jje
Click to expand...
Click to collapse
Does not like laptops? Works fine on all the laptops/ netbooks that we use and thats a mixture of brands at that.

Does not like laptops in that a majority of Kies not working posts are for Laptops .
Works on my x64 laptop .
jje

Nyssa1104 said:
Does not like laptops? Works fine on all the laptops/ netbooks that we use and thats a mixture of brands at that.
Click to expand...
Click to collapse
Agreed....
But Kies is rubbish anyway, just aquaint yourself with Odin and use that my friend
JD
Sent from my Samsung Galactic Superstar S II

JJEgan said:
Kies requires motherboard USB port and does not like Laptops .
jje
Click to expand...
Click to collapse
Rubbish, running on my win 7 pro 64bit toshiba lappy.

i guess this is not about flashing, so odin wouldn't help much, especially, since odin needs the working drivers as well.
i read somewhere on here, that the driver installation fails, if there is an external sd card inserted in the sgs2, when first connected (afterwards, there will be no problem on this point).
i agree with the others on other points though, kies really sucks to some extend. the only good feature i used, was media syncing. but for syncing of any kind (not only music and photos, but also savegames and other data) i use microsoft synctoy now, with the galaxy connected in mass storage mode. flashing with odin and syncing with 3rd party apps really makes kies redundant.

Chef_Tony said:
i guess this is not about flashing, so odin wouldn't help much, especially, since odin needs the working drivers as well.
i read somewhere on here, that the driver installation fails, if there is an external sd card inserted in the sgs2, when first connected (afterwards, there will be no problem on this point).
i agree with the others on other points though, kies really sucks to some extend. the only good feature i used, was media syncing. but for syncing of any kind (not only music and photos, but also savegames and other data) i use microsoft synctoy now, with the galaxy connected in mass storage mode. flashing with odin and syncing with 3rd party apps really makes kies redundant.
Click to expand...
Click to collapse
Tried to disconnect the SD card, I receive the same error: "SAMSUNG Mobile USB Modem Failed". Tried to reinstall drivers from Kies tools, of course did not work. Ran out of ideas.

Install the drivers manually from the Kies' "escape" folder. Use the Windows Device manager.

Already done this. DOES NOT WORK.

Do you have any others accessories connected to usb, like mobile broadband? I've got similar problem and when I've uninstalled drivers and disconnected modem everything started to work again
Sent from my GT-I9100 using XDA App

have you tinkered between usb debugging on and off
Read somehwere the first time you you use kies...have kies running, put phone off usb debugging. then plug it in

I had same problem with my desktop. i went into device manager. there should be an explanation mark next to phone. uninstall driver then reinstall telling it to get driver from the web. then start up kies. ps make sure kies isnt running when u install. hope this works took alit of messing around for it to work for me but eventually did.

I have W7 with 64 bit and fortunatelly KIes works on mine. I live in US and I downloaded Kies from Samsung UK site just in case because the phone was bought from Expansys and is coming also from UK. Maybe try to check on this solution. Also I vaguely believe that I had to disable firewall or Eset during the installation, but I may be wrong on this. That sucks that yours doesn't work. Wish you luck...

I am running Windows 7 in 64bit and everything works perfectly. Except I dont like Kies and used it only once.... to check what its all about.
I do not remember the installation process, but usually hardware must not be plugged in until the driver is actually installed. So just uninstall everything, install it again and THEN when everything is done plug in the phone. It should be then be recognized and working.
However if you want it just to put music on it or copy files in general, better ditch Kies and make your device be recognized by your computer like an USB-Drive.
Go to Settings > Applications > Development (Translated it from German, might be off)
There you check the USB-Debugging option and have no need for Kies anymore.

What USB port are you using? Experience from the cappy forum and personal experience shows that using a USB port right off the MB is best. Not sure if it's a power problem or what. My cappy would always charge and be hit/miss on recognization using the front USB port on my computer. Using a rear port produces connection everytime. I'm on a cappy right now, just waiting for the US release date to get GS II.

None ot the above worked. Giving up. Tx anyway.

Windows 8.1 can't find MTP Driver

So now that I upgraded to 8.1, my SGS4 no longer connects to the computer. Under Device Manager I can see the MTP listed with an exclamation mark. The error is:
The drivers for this device are not installed. (Code 28)
The install class is not present or is invalid.
I installed the Samsung USB drivers from http://forum.xda-developers.com/showthread.php?t=2038555 but that did not help

Bojamijams said:
So now that I upgraded to 8.1, my SGS4 no longer connects to the computer. Under Device Manager I can see the MTP listed with an exclamation mark. The error is:
The drivers for this device are not installed. (Code 28)
The install class is not present or is invalid.
I installed the Samsung USB drivers from http://forum.xda-developers.com/showthread.php?t=2038555 but that did not help
Click to expand...
Click to collapse
Same here. Either Gnex or Asus N7 both not working as USB mass Storage devices. Tryed alot of drivers.

Try deleting your preinstalled drivers restart and let windows reinstall them for you.
Sent from my SAMSUNG-SGH-I337 using xda app-developers app

Drivers
Where you able to fix the problem? I upgraded to windows 8.1 and now my Ipad won't connect because of thei MTP driver, there is a conflict.
Bojamijams said:
So now that I upgraded to 8.1, my SGS4 no longer connects to the computer. Under Device Manager I can see the MTP listed with an exclamation mark. The error is:
The drivers for this device are not installed. (Code 28)
The install class is not present or is invalid.
I installed the Samsung USB drivers from http://forum.xda-developers.com/showthread.php?t=2038555 but that did not help
Click to expand...
Click to collapse

babaloo1969 said:
Where you able to fix the problem? I upgraded to windows 8.1 and now my Ipad won't connect because of thei MTP driver, there is a conflict.
Click to expand...
Click to collapse
Still no fix

same problem here, but with a solution
Hi there,
Im using my sgs2 with the newest rc cyanogenmod and did an uptade after swithcing to cyanogenmod to win8.1 on my notebook. I was not longer able to reach the content of my phone and had no signs of my phone in my windows explorer.
somewhere I found the advice to install windows media player feature pack for win 8.1
now it works again :laugh:
Maybe it helps someone else too.

willdmo said:
Hi there,
Im using my sgs2 with the newest rc cyanogenmod and did an uptade after swithcing to cyanogenmod to win8.1 on my notebook. I was not longer able to reach the content of my phone and had no signs of my phone in my windows explorer.
somewhere I found the advice to install windows media player feature pack for win 8.1
now it works again :laugh:
Maybe it helps someone else too.
Click to expand...
Click to collapse
Well it sure helped me. Thanks willdmo!:good:
Just today I installed Windows 8.1 N pro x64, the "N" versions means it excludes windows media player (I never use that **** anyway).
It's quite ironical that I ended up installing it anyway... damn you microsoft.
The update is called "Media Feature Pack for N and KN versions of Windows 8.1" < if you search that you'll find the download page, I don't have privilege to post links here.
My problem was just as everyone else's here - my Motorola Razr M XT907 did show up as unrecognized MTP in device manager.
After applying that "pack" and rebooting, it works normally.

F you microsoft.

Urik_Kane said:
Well it sure helped me. Thanks willdmo!:good:
Just today I installed Windows 8.1 N pro x64, the "N" versions means it excludes windows media player (I never use that **** anyway).
It's quite ironical that I ended up installing it anyway... damn you microsoft.
The update is called "Media Feature Pack for N and KN versions of Windows 8.1" < if you search that you'll find the download page, I don't have privilege to post links here.
My problem was just as everyone else's here - my Motorola Razr M XT907 did show up as unrecognized MTP in device manager.
After applying that "pack" and rebooting, it works normally.
Click to expand...
Click to collapse
Thank you. This Worked.
F*** Microsoft.

Just learned that after installing windows 8.1 and kit Kat.. It will not recognize my phone... I have everything setup properly. Do not manually install
The drivers... It caused my phone to wipe every time I powered off. Which meant having to re flash all over again... Reflashed stock. I'm not sure. But maybe with kit Kat you need nexus 5 drivers...
Sent from my LG-LS970 using xda app-developers app

MTP isn't working for me either... I'm running Windows 8.1 with Media Center, so I can't install the "Media Feature Pack for N and KN versions of Windows 8.1"
Any other ideas how to fix it?

Depressed T.Bear said:
MTP isn't working for me either... I'm running Windows 8.1 with Media Center, so I can't install the "Media Feature Pack for N and KN versions of Windows 8.1"
Any other ideas how to fix it?
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Click to collapse
+1.
I tried latest Samsung usb drivers from XDA post. It doesn't work (erratic bebavior mounting/unmounting drive repeatedely)
Edit: Finally I succeeded in mounting internal SD to PC on windows 8.1. Just to share my own experience:
- I installed Samsung USB drivers v1.5.15.0. (not sure it is very important to get this version rather than the last one 1.5.29.0) and rebooted
- And I changed my data cable (for the same model, but appeared to work better)
- when I plug the 'good' cable it opens immediately the SD card in explorer
- when I replace cable with former one, back to errativ behavior.

Bojamijams said:
So now that I upgraded to 8.1, my SGS4 no longer connects to the computer. Under Device Manager I can see the MTP listed with an exclamation mark. The error is:
The drivers for this device are not installed. (Code 28)
The install class is not present or is invalid.
I installed the Samsung USB drivers from http://forum.xda-developers.com/showthread.php?t=2038555 but that did not help
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Problem vyřešen zde je odkaz http://www.microsoft.com/cs-cz/download/confirmation.aspx?id=40744

Enabling USB Debug Mode solved my problem.

I solved my problem by flashing the latest german 4.3 rom now it works like a charm.
I also had blocked some some unnecessary system apps, which was considered safe to disable - using BootManager http://forum.xda-developers.com/showthread.php?t=2432359
And also some apps samsung apps were greenified
After I had all the system apps re-authorized, and had updated to 4.3, it went smoothly.
I hope this can help someone who just forgot to re-enable some "important" apps

Depressed T.Bear said:
MTP isn't working for me either... I'm running Windows 8.1 with Media Center, so I can't install the "Media Feature Pack for N and KN versions of Windows 8.1"
Any other ideas how to fix it?
Click to expand...
Click to collapse
Try this: http://forum.xda-developers.com/showpost.php?p=35854664&postcount=7
Worked for me when all failed. Hope that helps!

HRDLYWRKNG said:
Try this: http://forum.xda-developers.com/showpost.php?p=35854664&postcount=7
Worked for me when all failed. Hope that helps!
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Thanks, but as written above, I solved it by updating to 4.3 and the re-enabling of various apps

You just need to install "windows media feature pack" for your win 8 or 8.1
It fixed it for me

I am using LG Gpro, after i upgraded my pc to Window 8.1, i got problem with MTP service, is it install "windows media feature pack'" can solve this problem?

use this as drivers for mtu