HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\excel\security\filevalidation

Turn off file validation
- HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\excel\security\filevalidation\enableonload
Set document behavior if file validation fails
- HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\excel\security\filevalidation\openinprotectedview
- HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\excel\security\filevalidation\disableeditfrompv
Perform file validation on pivot caches
- HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\excel\security\filevalidation\pivotoptions