File Integrity Monitoring requires MDE agent version 10.8799+ for legacy Windows
File Integrity Monitoring requires MDE agent version 10.8799+ for legacy Windows machines
March 22, 2026
Due to a pipeline change in Microsoft Defender for Endpoint (MDE), File Integrity Monitoring now requires the Defender for Servers Windows client (Microsoft Defender for Endpoint agent) version 10.8799 or above for proper functionality on legacy Windows machines (downlevel clients).
Key details:
- Affected systems: Legacy Windows machines (Windows Server 2016, Windows Server 2012 R2, and other downlevel clients)
- Required version: Defender for Servers Windows client (MDE agent) 10.8799 or later
- Impact: FIM monitoring will not function properly on versions below the minimum requirement

