Prompt time is the checkin time for the client. Anything below 60 seconds is invalid, and we won’t allow the client to go below that point. (Using Default = 60s)
Error code 2691 = The machine is already joined to the domain.
So this is likely true. When creating the master image, I would highly suggest disabling the “Join Domain” feature of the host. (Host Page->Edit relevant Host->Active Directory->Uncheck Join Domain) then disjoin that machine from the domain manually. Then capture your image. If you’re sysprepping your images, it’s also recommended to disable the fogservice from starting on the machine, and having a setupcomplete.cmd script that re-enables the service once sysprep process is complete.