Windows 10: Fast User Switching doesn't work on some machines

Hello,

I have as strange one here with Fast User Switching FUS- so ideas are very welcome:

• I have a number of domain joined PCs all running up to date Win 10 Pro
• some of them simply don't have Switch User option on the Lock Screen
• they have Switch User option in Start Menu, but using it causes current user to be logged off before returning to Logon screen
• I've played with the usual suspects Registry, Group Policy, Local Policy... that control the behavior of FUS - w/o any effect
• chkdsk, sfc, dism found no problems and even repair install didn't help
• attempting to troubleshoot the issue I've made a drive image from one of the machines and when run on Hyper-V, VirtualBox or another physical machine the Switch User is there and working as expected !
• moving the imaged disk back to the problematic machine and the problem reappears
• this indicates that HW has something to do with it - by looking a the affected machines they seem to be older HP machines dc5850, 6005 Pro - all non UEFI with TPM 1.2 chips on board and otherwise quite different Intel and AMD based.
• they are all running their latest BIOS and disabling TPM in BIOS doesn't make any difference - I can't imagine that any of other device might have any effect on FUS in Win10
• I see nothing EventLog that might indicate the problem and even running ProcessMonitor doesn't indicate anything obvious
• currently I'm pondering if some driver/service can have a role in affecting the Win10 behavior possibly including BIOS settings - so that this essentially becomes HW dependent issue
• on affected machines it is possible to have another user signed in by locking the current session and logging in as another user from Lock Screen

This has been bugging me for a week and it's driving me insane :

Thanks

TL;DR
Fast User Switching FUS works depending on whether the drive is being booted on different hardware. I'm looking for any HW driver/service that might have an impact on FUS

:)

 

Windows doesn`t start. Authomatic repair doesn`t work.

Thanks again!!

I`m sorry I had not noticed that the text on the picture was in spanish. It says that windows has replaced some damaged clusters in "name" file and "directory". Then, at the end "an unspecified error occurred (75736e6a726e6c2e 4f6)".

I`ll do it and I`ll be updating this thread when I have the report.

- - - Updated - - -

I ran SeaTools. These are the results:




Does it mean my HDD is useless?

 

Disable fast user switching.

 

Disable fast user switching.

Hi,

You can try the following steps and check.

Fast User Switching is an easy way for another person to log on to the computer without logging you off or closing your programs and files. Follow the steps below to for Fast Switch User.

1. To begin, make sure that you have logged in as Administrator or have required administrative rights to change local group policies.

2. Press the Windows +R button.

3. Run dialog box will pop-up,type gpedit.msc..This will open Local Group Policy Editor.

4. Now, go to the following location and look for Local Computer Policy in the left pane.

5. Click on Local Computer Policy/Computer Configuration/Administrative Templates/System/Logon.

6. Just double-click Hide Entry Points for Fast User Switching to bring up a dialog box to change Fast User Switching policy setting.

7. At the top, there are Not Configured, Enabled and Disabled options available. Selecting each setting will let you read its affect in Help section. To disable
Hide Entry Points for Fast User Switching, just select
Disabled from the list and click OK.

8. Once done, you will have to enforce the change made to Fast User Switching policy setting. To do so, close the Local Group Policy Editor and open the Run dialog box (Windows +R button). Enter the command “gpupdate
/force“ and click OK. The policy will be updated and applied on all user accounts.

9. To re-enable Fast User Switching, just choose Not Configured in its policy setting dialog and apply the changes via
gpupdate /force command.

I would also suggest you to stop and restart
Fast User Switching Compatibility in services.

Hope this helps.

Please post back if you have any issues related to Windows and we will be glad to assist you further.