We need to unprovision many AMT 2.x systems that have been wiped and prepared to retirement. Is there a way to boot them to a USB and run the Unprovision.exe tool on each one?
We finally resorted to removing the battery for a minute to reset everything. We did manage to boot (via USB) into a Microsoft Disaster and Recovery Toolset that has a Win8 WinPE image on it. We ran UnProvisionEx.exe from there but it returned nothing. Just a plain C:\ prompt. Does UnProvisionEx.exe need .NET framework to connect to AMT?
Removing the CMOS battery resets all data in the MEBx back to their default values. If you've pulled the CMOS battery like Greg suggested, then the computer has already been unprovisioned.
Also, to answer your question about the UnprovisionEx.exe tool, yes you do need the .NET Framework for it to run.