Can't open right-click context menus on taskbar icons, can't open main start menu, can't open Windows Security/Settings/System

If the issue still persists, please try performing an In-place Upgrade. Performing this can repair broken operating system files while your personal files, settings and installed applications will not be removed.

https://answers.microsoft.com/en-us/windows/for...

Few things to check on the PC

**Unplug all external peripherals except for the Mouse, Keyboard, and LAN cable before starting

**Disable or uninstall any 3rd party Anti-Virus program to prevent it from interfering with the upgrade

Kind regards,

John DeV

Independent Advisor

Hi, good day! I'm John Dev a Windows user like you and I'll be happy to assist you today. I know this has been difficult for you, Rest assured, I'm going to do my best to help you.

When was the last time it worked properly? Have you made any changes to your computer recently?

Please try the following methods below.

**Restart Windows Explorer

Press Ctrl + Shift + Esc to open Task Manager.

Select the Processes tab.

Scroll down and look for Windows Explorer

Right click then select Restart.

**Please try to run SFC and DISM to check for any system errors and corrupted files.

https://support.microsoft.com/en-us/help/402652...

After that, restart your computer

Note: You can open command prompt by doing this,

Press Ctrl+Shift+Esc to open Task Manager then click File

Select "Run new task" then type: cmd

Make sure to put a check mark on the "Create this task with administrative privileges" box

Continue with the commands within the link above.

**Repair all Windows apps via PowerShell

Press Ctrl+Shift+Esc to open Task Manager then click File

Select "Run new task" then type: powershell

Make sure to put a check mark on the "Create this task with administrative privileges" box

Copy and paste the command below one at a time then press Enter. Please ignore the red errors and let the process complete.

Get-AppXPackage -AllUsers -Name windows.immersivecontrolpanel | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register “$($_.InstallLocation)\AppXManifest.xml” -Verbose}

Get-AppxPackage Microsoft.Windows.ShellExperienceHost | foreach {Add-AppxPackage -register "$($_. InstallLocation)\appxmanifest.xml" -DisableDevelopmentMode}

Get-AppXPackage | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_. InstallLocation)\AppXManifest.xml"}

Restart your computer

Kindly let me know if this helps or if you have any further concerns by clicking the "Reply" button at the end of my response. I will appreciate it.

Kind regards,

John DeV

Independent Advisor

Please try to return to the login screen

While holding the Left Shift key, click the Power icon in the lower right > Restart

This will bring you to Windows Recovery Environment

Select Troubleshoot > Advanced Options > Uninstall Updates

Uninstall latest quality update

If this doesn't work, Select Troubleshoot > Advanced Options > System Restore

Select the restore point at an earlier date where everything is still working.

Click Next then Finish

Kind regards,

John DeV

Independent Advisor

When was the last time it worked properly? Have you made any changes to your computer recently?

No change.

I've already restarted Windows explorer a number of times.

SFC and DISM didn't raise any problems.

I couldn't see a "File" option in my Task Manager, but I already had an admin Powershell window open from the previous step so used that. The first two commands ran very quickly, third was longer and showed red errors like you mentioned.

After restarting the issue persists.