the new template has the sysprep fields filled correctly?
do you see any error in the log?
can you attach the engine.log for the time user takes vm from pool?
please note that if vm was started from admin before it was started from user portal,
it was started in stateful mode and sysprep will be marked as done, and will not happen
again..
Of course the vm was started as admin to make the first sysprep run.
Otherwise it would sysprep at every boot, but If I rebase the vm it
needs to sysprep once again! For the logs I'll provide them asap