Scenario: A Citrix Administrator recently created and deployed a new vDisk to all Desktop OS machines. The morning after making that change, users are unable to launch their Desktop OS machines. The…

Maintenance mode on a PVS device collection prevents target devices from accepting user sessions and can cause machines to remain powered off, which matches the described symptoms after the vDisk update. Disabling maintenance mode at the device collection level immediately applies the change to all associated Desktop OS machines, allowing them to boot normally and become accessible to users. This is the direct administrative action to restore service without requiring infrastructure changes.

Enabling Active Directory machine account password management on the vDisk addresses password synchronization between PVS and AD, which is unrelated to machines being placed into maintenance mode by a vDisk deployment.

Manually creating new AD machine accounts is irrelevant when the machines and their accounts already exist; it does not affect the maintenance mode state set within Provisioning Services.

Disabling machine account password changes via GPO manages AD password policy for the machine accounts but has no effect on the maintenance mode flag controlled by the PVS device collection settings.