PXE boot aborted pending request id 21

Question

I am trying to boot from PXE and install Windows via SCCM. Previous computers was OK, but this computer get error: pending request id 21

See:

Cannot get information about this error code.

Solution

May not be the answer but I can't comment....yet!

I don't remember the Error/ID number for the following example.

If the pc has been imaged with SCCM before, there is a "switch" thrown within SCCM indicating that. If that is the case, you'll have to right click the device and select "Clear Required PXE Deployments". Give SCCM a few minutes to upate itself and try again. If this doesn't help, I'd have to do some googleing!