Hey there!
In this case, the VM is disconnected from the domain. You need to log in to the VM using a local account and then add the domain again.
If the desktop is provisioned via FusionAccess, the password of the administrator is reset during provisioning. Therefore, if no built-in local account can be used to log in to the desktop, only the password of the administrator can be reset on the PE.
This is a common scenario where VMs are out of domain. If you do not have related operation experience, we suggest that you contact your local TAC. They will help you with guidance.