Yes, I have the same effect with Microsoft SCCM (agent is only x86) and win7 x64 clients.
– We using schematic scripts (install-sccm.cmd and uninstall-sccm.cmd) for the install and uninstall.
– the same two lines in test environment (start a x86 CMD with local admin rights and then start the install-sccm.cmd script), install works fine within round about 5 secs.
– this ok-tested script doesn’t works fine when started with the sccm agent (SYSTEM-rights). the certificate will be installed, but the winCDEmu-3.6.exe /UNATTENDED freeze after file copy. In the taskmanager you can see the endless “running” process winCDEmu-3.6.exe /UNATTENDED as SYSTEM
The same script, only two versions to run.
– in a x86 CMD with local admin rights in works fine (our final check before we set the script productive in SCCM)
– startet from an x86 agent with SYSTEM rights it doesn’t work
I have no more ideas 🙁