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BRTech-6720 avatar image
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BRTech-6720 asked Max-9291 published

Win 10 2004 Folder Redirection - Black screen after login when not on a network

After Domain PC's have been updated to Windows 10 version 2004 users get a black screen with cursor when not connected to any network. I have seen this issue listed other places dealing with screen drivers, but this is not the issue. The issue is with folder redirection when not on the Network. We have a lot of remote users now and a 10 minute, some have said as long as 45 minutes, black screen after login (with no network) is not good. Before you ask the Ctrl + Alt + Delete does not work.

Over the course of a month or so I have been testing different options, settings and policies and confirmed that it is Folder Redirection. I have ended up with some tests that I can recreate and fix the issue, but removing Folder Redirection is not an option. We have been using Folder Redirection for at least 15 years and this has started with version 2004.

I’ve taken our Main OU policy and made a copy of it (call it Test) and only removed the folder redirection settings.

With a PC and user logging on the Network everything works correctly and the desktop shows in a few seconds, which is normal. When user logs out and removes the network connection, after logon we get the black screen for about 10 minutes and then the desktop finaly shows.

Replacing the Main policy with the Test policy in the OU group and running GPUPDATE /FORCE on the PC and ran the same tests again. Only this time the desktop shows up after a few seconds both on and off the network.

To sum up starting with Win 10 2004 this is what happens with Folder Redirection:
With FR on the network no black screen after logon.
With FR off the network after login black screen shows for 10-45 minutes
With no FR on the network no black screen after login
With no FR off the network no black screen after login

BTW, once the network connection is reconnected (on my test machine) the black screen goes away within 5 seconds.

Any suggestions on how to correct this?

windows-10-networkwindows-group-policy
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Hi,
Welcome to share your current situation if there are any updates.
Please feel free to let us know if you need further assistance.
 
Best Regards,

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I think we have fixed the issue.

One of the several drives we have mapped through GPO is mapped to the same location as the Folder Redirection.

When I made that one drive not to be persistent the Black Screen did not show.

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HannahXiong-MSFT avatar image
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HannahXiong-MSFT answered BRTech-6720 commented

Hello,

Thank you so much for posting here.

So did this issue only occur after domain PCs were updated to Windows 10 version 2004?

Besides, we could have a check whether the offline files have been enabled.

52425-11.png


Best regards,
Hannah Xiong

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Yes, It only started after the PC's do the update to 2004. We disabled Offline files years ago, but I did test that setting just to eliminate the possibility and did not effect the outcome.

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HannahXiong-MSFT avatar image
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HannahXiong-MSFT answered BRTech-6720 commented

Hello,

Thank you so much for your kindly reply.

As for the Folder Redirection group policy, there seems to be no issue as the configuration is OK and it could be successfully applied.

The issue only started after the PCs update to 2004 and only with Folder Redirection off the network, there will be black screen for 10-45 minutes after login. After 10-45 minutes, the users could successfully login, right? Besides, the issue occurred on the remote users, right?

As per my understanding, it is more likely a performance issue. And to further troubleshoot, we might need to collect the logs, such as Winlogon ETL and GPSVC log. If it is urgent,I would suggest you contact Microsoft Customer Services and Support to get an efficient solution:

https://support.microsoft.com/en-in/hub/4343728/support-for-business

Thank you so much for your understanding and support.

Best regards,
Hannah Xiong

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Thanks, I will try that link.

This happens on any PC, at the office I remove the network cable to recreate the issue.

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Max-9291 answered Max-9291 published

Hi, have you ever found a solution ? I’m stuck with the same exact issue.

Thank you

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