I had a Windows Update 2 days ago. After that, I noticed my Start Menu failed to open. In addition, the right click menu on any icons on the Taskbar, as well as the Calendar when left clicking on the clock, fail to open as well.
I am open to trying pretty much any solution short of reinstalling Windows entirely.
Using the Windows Start Menu Diagnostics Tool suggested that my "Shell Experience Host" and "Cortana" are not properly installed, and that my Tile database is corrupt, yet it failed to fix those issues.

Among other things I have tried are:
- Restarting my computer (no change)
sfc /scannowanddism /online /cleanup-image /restorehealth(The former found some problems, but seemingly nothing related to my problem. Failed to fix the problem. Of note is that of the 5 or so times I have had this problem in the past, SFC has found way more issues, and has managed to clear this problem.)- Reinstalling (reregistering?) Windows Apps from Powershell (the following, as well as some variations on it:
Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}) (fails for all apps, no change in my problem)
If I can help you help me by providing some logs, Event Viewer information, or whatever else, please.