Do not upgrade to Microsoft Defender for Endpoint on Linux build 101.26052.0009 due to issues on FIPS-enabled RHEL 8 and 9 devices. Rollout is paused; a revised build will be released by late July 2026. Those without issues after upgrading need no immediate action.
Applies to: Microsoft Defender XDR
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).