UPDATE: Windows 11 is officially supported with 11a. This article will be updated with a support statement afterwards. The official support will require full regression testing of the GA build when it becomes available.

Microsoft Windows 11 readiness based on the pre-release build.Please install KB5005619 on Server 2022 prior to mounting Server 2019 ReFS volumes. WARNING: Performing in-place upgrade of Server 2019 based ReFS backup repositories to Server 2022 and/or mounting Server 2019 ReFS volumes to Server 2022 causes BSOD boot loop due to a regression in the ReFS format upgrade code. Microsoft Windows Server 2022 and Microsoft Windows 10 21H1 are now supported as guest OS, as Hyper-V hosts, for installation of Veeam Backup & Replication components, and for agent-based backup with the Veeam Agent for Microsoft Windows 5.0.1 (included in 11a).Veeam Backup & Replication v11a is the newer build of version 11 that addresses issues reported by customers on the original build and adds the following new features and enhancements.

Veeam Backup and Replication V11a release on September 27, if you are still using earlier version, it’s the time to upgrade it to V11a.