Applies To: System Center Configuration Manager 2007 R2, System Center Configuration Manager 2007 R3
Unknown computer support is an operating system deployment feature in Configuration Manager 2007 R2 that allows unmanaged systems to be discovered and receive operating system deployment.
http://technet.microsoft.com/en-us/library/cc161877.aspx
~But why is it showing up in my SCCM task sequence? ...
This is not an error, it was an informational message just saying that the Task Sequence Availability Checker did not need to add the machine to a collection for task sequences to be available at the next step. This is because we have advertised the task sequences to the unknown computer collections. Any machines that boot up and request task sequences that do not have a record in SCCM will be able to start running one of those advertised task sequences.
We are using non-integrated WDS which means we can’t use the unknown computer support on PXE service points. However, the issue here isn’t to do with unknown computer support anyway, it’s to do with known computers and task sequences not being available to them. That’s why we created the task sequence checker tool to add machines to the right collection at boot time.
Advertising task sequences without mandatory schedules to all machines is out of the question, it would take just one person to think “that task sequence didn’t run on that computer properly, I know I’ll right click and rerun on the advertisement” to rebuild every machine in the company! Obvious no no.
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