These steps help with troubleshooting and fixing the following Windows operating system issues and errors:
Class not Registered
All Microsoft applications fail to boot
All icons fail to start and CMD reboots of explorer.exe fail
Can’t start Settings in CMD
Slow interactions or boot up
Troubleshooting Resolution:
Open CMD as an administrator.
Run sfc /scannow to verify system files.
If the sfc scan came back with errors, reboot the system and repeat the process until there are no longer any errors. Then proceed with instructions.
If files come back with no errors then proceed to run the following command to restore the default settings for all .dll functionality: for /f %s in (’dir /b /s *.dll’) do regsvr32 /s %s