Hello @Robin WEISS
Werfault.exe is a process for Windows reports errors in applications, so you could disabling the Windows Error Reporting Service.
Or Run System File Checker and Perform a Disk Cleanup with Administrator privileges
SFC /scannow
Dism /Online /Cleanup-Image /RestoreHealth
Otherwise Update Windows, Scan Your Computer for Viruses, and uninstall Third-Party Antivirus Program
RdrCEF.exe-Application Error
https://community.adobe.com/t5/acrobat-reader-discussions/rdrcef-exe-application-error/m-p/9053167
Best Regards
Karlie
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