Try signing out of your account then reboot PC. Once back up sign back in.
Also be sure Windows is up to date fully.
If that does not work run the following…
For those having any CTD issue/s try the following…
Run the following commands in Powershell (admin rights)…
Go through each of the following steps one at a time. Copy each line, one at a time , paste it into the Dos window (crtl + V) and press return
and it will then run. Wait until each runs and finishes before you move on to the next one.
When you are completely finished, Restart your computer and then try to see in MS2020 will start and run properly
Dism.exe /online /Cleanup-Image /checkhealth
Dism.exe /online /Cleanup-Image /scanhealth
Dism.exe /online /Cleanup-Image /Restorehealth
sfc /scannow
Dism.exe /Online /Cleanup-Image /AnalyzeComponentStore
Dism.exe /Online /Cleanup-Image /StartComponentCleanup
RESTART your computer as the last step. Then go for a test flight.