Block Web Add-ins

Supported on: At least Windows Server 2008 R2 or Windows 7

Registry

HKCU software\policies\microsoft\office\16.0\wef\trustedcatalogs

Value name: disableallcatalogs

Enabled: disableallcatalogs = 1

Disabled: disableallcatalogs = 0

Description

This policy setting allows you to prevent users from using web add-ins. If you enable this policy setting, web add-ins are blocked and all other policy settings in the Trusted Catalogs folder are ignored. If you disable or do not configure this policy setting, apps are allowed. Other policy settings in the Trusted Catalogs folder determine which specific app sources are allowed.