Issue:
When launching PowerChute Personal Edition you see the error "apcrun.exe is not a valid Win32 application" and PowerChute will not run

Product:
PowerChute Personal Edition

Environment:
All supported Windows OS

Cause:
Corruption in the system files

Solution:
1 - Open command prompt as an administrator and enter the command sfc /scannow You will find information or the utility sfc scannow in Microsoft help document 
https://support.microsoft.com/en-us/help/929833/use-the-system-file-checker-tool-to-repair-missing-or-corrupted-system#:~:text=sfc%20%2Fscannow,the%20Windows%20operating%20system%20folder

Once the scan has completed reboot the system

 2 - If system scan does not resolve the issue, uninstall PowerChute, re-download the application from apc.com, reinstall.