Windows Security UI/App Missing in Windows 11

Question

I have a new Lenovo x64-based desktop with AMD Ryzen 5. As it was RECOMMENDED BY MICROSOFT, I chose Windows 11 instead of Win10 when I intially set up my system few days ago. Mistake, really a mistake. The Windows Security was available for one day, but when installing RECOMMENDED UPDATES BY MICROSOFT, Windows security just vanished from my system. What a great little treat, investing lot of money for the new system, used 2 days to install all the software I need, then it doesn't work properly and I don't want to reset my system and use another 2 days to reinstall and configure all the software I need. Also, same problem may occur anyway.

I have tried everything that can be found from here: https://www.makeuseof.com/windows-11-fix-windows-security/

I have tried everything also from here: https://answers.microsoft.com/en-us/insider/forum/all/windows-security-ui-missing-in-windows-11/695a3018-f2f8-4e35-a639-79a9d214bcdb

When running 'Get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackage' command as an administrator on Powershell it executes the command, but nothing appears, so I don't know was something executed and fixed or not. What I do know is that Windows Security still doesn't appear in my system, the choice is there but nothing gets executed.

Any hints and instructions what to try next with this unfinished lousy software called Windows 11? Many thanks in advance.

Answer 1

Went back to Win10 with clean installation today and I met my old friend 'Windows Security'. Long time, no see. Everything seems to run smoothly with this one, at least for now. Many thanks for those who gave valuable help and advises for me.

Just one more question now that I need to reinstall and configure all the software this week again to my system, where do I send my invoice to Microsoft for all the extra work I have had to do because of the buggy Win11 software? We are talking about several working days here.