Updated to Win 20H2 but can not sign in to my local account

Just updated through Windows Update to 20H2. I have only two accounts, both local. My primary login picture, name and sign-in screen come up as normal, but whether I enter my pin or password - it starts with 'Welcome' but immediately signs out. The other local account works just fine. But all my stuff is in my primary login. Please, how can I fix this?

Thank you very much for getting back to me on this. I appreciate it!

dalchina said:

Hi, this suggests there was some corruption before you upgraded, or that affected the upgrade.
Please run the following basic checks:
a. Download, install and run Hard Disk Sentinel (functional trial) - valid for SSDs too. Instand appraisal of disks right on its GUI.
b. If ok, from an admin command or Powershell prompt run
chkdsk c: /scan
Report whether this passes.

All the scans & tests came out perfect. No problems shown. I attached the results of each, plus I ran a sfc/ scannow just for good measure, which is also attached.

dalchina said:

If ok, you might try this:
Windows 10 signing me out immediately after logging in

The article you referred to above says it is a 'new user' sign-in problem. My user was the first user created many years ago. So I'm uncertain as to whether I should try the solution

Also, in that article it says, "Here we need to check on the values of two values—Shell and Userinit. It should be as following.

• Shell = explorer.exe
• Userinit = C:\WINDOWS\system32\userinit.exe

Double click on them to open in edit mode, and then add these values.
Restart the computer in normal mode, and try to login with a new user account."

Well, "...then add these values.", it doesn't show what values to add...

Please let me know your thoughts. Thank you again for your help. :)

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Just for kicks, I booted into safe mode and I was able to sign in perfectly. What does that mean?

Just for kicks, I booted into safe mode and I was able to sign in perfectly. What does that mean?
When something works in Safe mode but not in normal Windows it means that third-party software is affecting the situation. Denis

To decypher which it is, referring to attached screenshot, un-check services one-by-one and restart until sign-in issue is resolved (example shows bluetooth disabled). Date disabled column will help you keep track of what you've tried before trying another service. I would start with the obvious ones that could be blocking your login, like 3rd party antivirus, vpn's, or tweak programs like O&O, etc. Could also, in Task Manager, Startup, disable items one-by-one but that may not be as effective. Good Luck

Try3 said:

They just mean if the entries are not
Shell = explorer.exe
Userinit = C:\WINDOWS\system32\userinit.exe
then change them to those values.

What are your current entries then?

When something works in Safe mode but not in normal Windows it means that third-party software is affecting the situation.

Denis

Thank you for that clarification. The entries are correct on my computer. Is it weird that everything was working fine before the upgrade? I did not install any third-party software just before the upgrade. So can the upgrade do something to one of the third-party software programs?

Actually, I do remember something strange the same day as I upgraded. I was rearranging some music in folders using file explorer and the program would not let me create a new folder - no matter how many different ways I tried. I ran 'sfc /scannow' and all was fine. No errors found. Also, I had just uninstalled Foobar2000.

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mrgeek said:

Just for kicks, I booted into safe mode and I was able to sign in perfectly. What does that mean?
When something works in Safe mode but not in normal Windows it means that third-party software is affecting the situation. Denis

To decypher which it is, referring to attached screenshot, un-check services one-by-one and restart until sign-in issue is resolved (example shows bluetooth disabled). Date disabled column will help you keep track of what you've tried before trying another service. I would start with the obvious ones that could be blocking your login, like 3rd party antivirus, vpn's, or tweak programs like O&O, etc. Could also, in Task Manager, Startup, disable items one-by-one but that may not be as effective. Good Luck

Great suggestion! It seems like I'll have a very longggggggggggg night ahead of me. I'll let you know what happens. Thank you!

Try3,

I noticed that you run Win 10 Home Edition like I do, but you have a higher version of Windows than I just upgraded to. Would upgrading to the newest version possibly fix my problem? Or should all problems be fixed before you do upgrades? I don't want to create nightmare city...

Hi again.

1. I did the 'How to Perform a Clean Boot in Windows 10 to Troubleshoot Software Conflicts - TenForumsTutorials' (BTW, how can I put the red links that show on others posts?).
2. I did through 'Part Two - #10 - B'. 'B' meaning that the problem still existed with everything being disabled.
3. I've rebooted and turned everything back to being enabled.
4. I've backed-up with Macrium
5. Now I guess I'll bite the bullet and try the 'Repair Install - TenForumsTutorials'. Honestly, this makes me a bit nervous. I've never done this before...

Any other input before I begin? Thanks again. I'll let you know.