Turn off file validation
Supported on: At least Windows Server 2008 R2 or Windows 7
Registry
HKCU
software\policies\microsoft\office\16.0\word\security\filevalidation Value name: enableonload
Enabled: enableonload = 0
Disabled: enableonload = 1
Description
This policy setting allows you turn off the file validation feature. If you enable this policy setting, file validation will be turned off. If you disable or do not configure this policy setting, file validation will be turned on. Office Binary Documents (97-2003) are checked to see if they conform against the file format schema before they are opened.