diff --git a/windows/security/threat-protection/windows-defender-exploit-guard/attack-surface-reduction-exploit-guard.md b/windows/security/threat-protection/windows-defender-exploit-guard/attack-surface-reduction-exploit-guard.md
index 8077146f92..1e25be6fc4 100644
--- a/windows/security/threat-protection/windows-defender-exploit-guard/attack-surface-reduction-exploit-guard.md
+++ b/windows/security/threat-protection/windows-defender-exploit-guard/attack-surface-reduction-exploit-guard.md
@@ -102,7 +102,7 @@ Use advanced protection against ransomware | c1db55ab-c21a-4637-bb3f-a12568109d3
 Block credential stealing from the Windows local security authority subsystem (lsass.exe) | 9e6c4e1f-7d60-472f-ba1a-a39ef669e4b2
 Block process creations originating from PSExec and WMI commands | d1e49aac-8f56-4280-b9ba-993a6d77406c
 Block untrusted and unsigned processes that run from USB | b2b3f03d-6a65-4f7b-a9c7-1c7ef74a9ba4
-Block Office communication applications from creating child processes | 26190899-1602-49e8-8b27-eb1d0a1ce869
+Block Office communication applications from creating child processes (available for beta testing) | 26190899-1602-49e8-8b27-eb1d0a1ce869
 
 The rules apply to the following Office apps running on Windows 10, version 1709. See the **Applies to** section at the start of this topic for a list of supported Office version.