"VM-"<computer name>.

I have been testing uninstalling/reinstalling the DC Agent and changing workgroup names via DC.  We do not have AD available for these PCs.

I have not worked out the exact sequence of steps required to repeat this renaming but I have seen it several times.  I relate it to DC not always tracking a workgroup name change,  duplicate creation of computer entries in DC (one for each of 2 workgroups for the PC),  using DC to remove the older duplicate when it reports the Agent is Installed,  uninstalling the  DC Agent from the PC using Programs & Features, and reinstalling DC on the PC.

I have also seen Automatic removal of the DC Agent on the PC which I think was tasked by DC when the computer was removed in the DC Console.  This is what I expected but I think the task should only execute if the DC Agent install date and time were from BEFORE the date and time the PC was removed in DC.  Since I am testing repeatedly in the same day, this showed up.

So,  how long does DC keep track of a PC removal?

Is the "VM-"  meant to refer to "Virtual Machine-"? 

Interesting that I should find these.

Mike