Black screen after login - other user gets logged in background

mora67 · 23 Feb 2018

So I got these two issues, don't know if these are related. At least second must be a bug or other conflict between accounts etc.

Black screen appears after admin login, lasts about 6 minutes before desktop appears. And note: black screen appears only for the admin login, other basic user account logins shows desktop in less than 10 seconds from login.
When switching of or rebooting from any account logged in, windows complains that there is another user logged in. Whatever has happened, there hasn't be a physical typing login of any other user. I started to see and realize this because my other family accounts has tried to switch of this PC but didn't notice that note of other user logged in and left the PC in that state without clicking don't mind; I see this when I log in next day with admin login details and switching off this other user note appears. And this happens also verse vice, just like admin gets logged in in background without me getting really logged in.

I got from Microsoft Finland community support advise that I should create a new admin account and then destroy current admin. But that would be a big mess because I have the whole MS family based on control from my current admin account. Also too many other services are depending of the control from this current admin account as Office 365 home accounts and security software.

dalchina · 23 Feb 2018

Hi,

windows complains that there is another user logged in

- perhaps suggests you have a user account configured to log in automatically (no prompt)
- which could have been achieved like this
Sign in User Account Automatically at Windows 10 Startup Windows 10 Tutorials

I'm not sure from your description, as if that were so, you'd log into that on boot, so you'd know which one it was.

Black screen appears after admin login,

Try a clean boot and then compare the result with that account.
Perform a Clean Boot in Windows 10 to Troubleshoot Software Conflicts Windows 10 Tutorials
Part 1

If that eliminates the delay, find the culprit by a process of elimination.

You can check your file system:
Boot to a command prompt (e.g. via SHIFT left click restart and work thru the prompts), at the command prompt identify the drive letter for your Windows partition (it most likely will not be C: )

then run
chkdsk X: /F
- replacing X with your drive letter.
Report the summary result.

Bree · 23 Feb 2018

dalchina said:

windows complains that there is another user logged in

- perhaps suggests you have a user account configured to log in automatically (no prompt)...

Also, the new feature in Fall Creators Update that can reopen apps on boot/restart also appears to cause some other users to appear as signed in...
Fall Creators Update Doesn't Log Out

mora67 · 23 Feb 2018

Bree said:

Also, the new feature in Fall Creators Update that can reopen apps on boot/restart also appears to cause some other users to appear as signed in...
Fall Creators Update Doesn't Log Out

One more issue to consider. Turning on this home PC after shutdowns by any user, in logging options only the admin (my) account logging option displays the email address connected to my Office 365 home account credentials, but other user options only login name option displayed of them. Does this mean that my admin login is not only a local login, and perhaps causing the whole/part of black screen delay mess with keeping all users logged in? That FCU might have some part of the issue, perhaps MS Office 365 also some part. I have Office 365 home partly syncing this desktop as well as part of Office 365 business from my work. I should remove that business part from this home PC, but I don't want to carry my work laptop home every day:)

Bree · 23 Feb 2018

With an email address showing, sounds like you are signing in with a Microsoft Account while the other users are local accounts. See these tutorials for more info.

How to Tell if Local Account or Microsoft Account in Windows 10

Switch to Microsoft Account in Windows 10

Switch to Local Account in Windows 10

mora67 · 23 Feb 2018

Bree said:

With an email address showing, sounds like you are signing in with a Microsoft Account while the other users are local accounts.

Yes, this is one kind of MS account signing in issue. A way to solve this is another issue. I need one reliable PC to control all family images/videos/files, currently Office 365 home seems to be the only option to provide possibilities for saving all this stuff automatically from family phones/pads.

dalchina · 24 Feb 2018

Regarding the delay to the desktop appearing - also see this thread which in that case mentions a particular update, and also means of technical analysis (non-trivial).
5 min delay on cold start between login screen and bg screen - Windows 10 Forums

mora67 · 03 Mar 2018

dalchina said:

Regarding the delay to the desktop appearing - also see this thread which in that case mentions a particular update, ad also means of technical analysis (non-trivial).
5 min delay on cold start between login screen and bg screen - Windows 10 Forums

App Readiness disabled didn't fix the black screen issue for me. I also quoted zinou in that thread.

mora67 · 11 Mar 2018

dalchina said:

Hi,
- perhaps suggests you have a user account configured to log in automatically (no prompt)
- which could have been achieved like this
Sign in User Account Automatically at Windows 10 Startup Windows 10 Tutorials
Report the summary result.

In my User Accounts was already set Users must enter a user name and password to use this computer. But still in background other account gets signed in without entering password. Weird.

Bree · 11 Mar 2018

mora67 said:

... still in background other account gets signed in without entering password. Weird.

No, not really, not if you have 1709. A little publicised new feature in the Fall Creators Update is that it has the ability at the next boot to restart certain apps that were open when you closed down. Some have reported that this also has the effect of 'pre-loading' some of the other users.

From build 16299.214 on a fix has been added that can turn off the 'reopen apps' feature for individual users . You turn off 'use my sign in info after a restart'. This will probably also stop the 'other users' sign ins. You'll have to do this for each user on the PC, not just your own account.

Use sign-in info to auto finish after Update or Restart in Windows 10 User Accounts Tutorials