Restrict Apps from FPRPC Fallback

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

Registry

HKCU software\policies\microsoft\office\16.0\common\fileio

Value name: blockwecfallback

Enabled: blockwecfallback = 1

Disabled: blockwecfallback = 0

Description

This policy setting allows you to control the fallback behavior of Microsoft 365 apps when using FrontPage Server Extensions Remote Procedure Call Protocol (FPRPC). If you enable this policy setting, Microsoft 365 apps will not use FPRPC. If you disable this policy setting, Microsoft 365 apps will continue to use FPRPC. If you don't configure this policy setting, Microsoft 365 apps will continue to use FPRPC.