Summary
The MAV/AVD Agent is not yet certified for Windows 11, Version 26H2. Customers should not upgrade managed endpoints to 26H2 until a compatible agent release is available.
Impact
| Scenario | What happens |
|---|---|
| Endpoint already on 26H2 with MAV/AVD installed prior to upgrade | Agent shows an OS-incompatibility message; protection continues uninterrupted — the device remains protected |
| New MAV/AVD install attempted on a device already running 26H2 | Installation will fail |
| Endpoint still on a supported Windows version | No impact today, but do not upgrade to 26H2 yet |
Recommended Action
- Do not upgrade managed endpoints to Windows 11, Version 26H2 until we announce a compatible MAV/AVD release.
- If a device has already been upgraded, no immediate action is needed — MAV/AVD keeps protecting the device; the incompatibility message is informational only.
- Hold off on new MAV/AVD deployments to any endpoint already running 26H2 until the compatible build ships.
Next Update
This page will be updated as soon as a 26H2-compatible MAV/AVD agent version is released.