During the patch update, all our Windows 11 VMs were migrated at least once and on the new target host, the Rust based agent failed to register to XCP-ng. All of them show in XOA as VMs with missing guest tools.
Restarting the agent from the service applet fixed it.
This is repeatable as I can recreate the failure to connect by manually migrating the VM.

Please advise what information you require.