Windows 10: Windows 10 2004 and 20H2 Blank screen after login with cached credentials

Hello,


I have some computers that updated to 2004 and now one that updated 20H2 that are experiencing a black screen with mouse after login. I can't bring up task manager with CTRL-ALT-DEL. if there computer is onsite and connected to the domain network it logs in fine. I disconnect it from the network it will not login. We are currently doing a network login to connect to the company VPN then login to the computer so the domain is available. I do not see this behavior on update 1909 or below.


Any help trouble shooting this would be helpful.



Thanks

:)

 

Wu - 1909-2004-20h2

I just upgraded my desktop PC from v1909 to v2004 and had two issues:

1. Couldn't log on to Cortana with my usual MS account - Strange Cortana Login Issue
2. PUA option turned off in Defender settings with the notice this setting is managed by your administrator. Solved by running this file available on the forum Default_allow_set_Windows_Defender_PUA_in_Windows_Security.reg

 

Microsoft security notification

Hi Maria,



Thank you for posting your query on Microsoft Community.



I appreciate your interest in Windows 10.We sincerely regret for the inconvenience caused.

• 
  Are you logged in using Microsoft account on the desktop?
  

You might be face this issue if the Windows login credentials are removed from the Login Credential manger.

I suggest you to try the following steps and check if it helps.



a. Press Start button and type "Credential Manager".

b. Click on the arrow near the "Windows cached credentials".

c. Check whether the Windows login credentials are listed over there.

d. If the credentials are listed, I suggest you to click on "Remove from vault" and follow the onscreen suggestions.

e. Now check for the issue.



Please let us know if you need further assistance.

Thank you.

 

Windows 10 2004 user credential protected NAS folders inaccessible

Windows 10 2004
WD My Cloud PR4100 NAS

I believe this is related to the Windows 10 2004 update. Since the upgrade, I can no longer access credential protected folders on my NAS

I can access the NAS itself. I can get a list of folders using file explorer just fine. Win+R > \\wdmycloudex4100 (ignore the name I kept it the same after an upgrade for convenience) no problem.

I can access Public folders on the NAS fine. However, when I try to access my previously accessible user credential folders (ones that require a user id & password that is setup on the my cloud) I get "access denied" and am queried to reenter my credentials to which I do.

But I receive this pop-up:




I tried:
Going into Windows Credentials and erasing my saved wdmycloud user credentials.
Created a new set of credentials on the NAS and tried those credentials.
I tried reenabling SMB1 (though shouldn't have to since the my cloud is supposed to be SMB3 capable). Didn't work anyway.




SMB3 listed in the NAS Settings:




Any other ideas?

- - - Updated - - -

Nevermind, figured it out.

To help other users: I had mapped drives set up to the NAS. There must have been some kind of credential caching for those mapped drives which wasn't listed in Windows Credentials and was preventing new credentials from being accepted by Windows 10 2004. Presumably disconnecting the mapped drives allowed fresh (even though they're exactly the same) credentials to be accepted rather than rejected by Windows. I was then able to remap the same drives again and it's all fine.

Excuse me while I go and re-disable SMB1. *Wink