Windows 10 Most apps and processes in Windows 10 on my PC are crashing on opening.

[Kasterberous]

Since yesterday I haven't been able to open any apps such as notepad, sticky notes, snipping tool, guitar pro etc or complete any processes such as troubleshooting or uninstalling from control panel without these things crashing immediately after opening, often before properly opening. So I can't even uninstall something to see if a re-install would help. For apps I get 'Snipping tool has stopped working' (For example) and for processes like trying to uninstall from control panel I get 'Microsoft (R) Application Host has stopped working'. Microsoft Edge also doesn't open although Google Chrome seems to be the only thing I can find that still works normally.

I have attempted everything I could find online, such as restore health and scans in CMD, resetting apps from PowerShell and updating everything. Again I tried to uninstall apps too but the uninstaller crashes. I completed a full system virus scan through Avast which worked as normal but showed no viruses or malware.

System Restore also crashes.

I should mention I think most of these apps were not downloaded from Windows Store.

I haven't downloaded any new programs or updated anything previous to this problem starting.

Any insights into what's going on here would be greatly appreciated as 90% of my PC use is through these apps and programs for my work, thanks!

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