Still same error Thanks for the info. I tried the upgrade on a Vista sp2 system and still had the 0xc0000409 error. Is this a documented error code? Not able to find it. Any ideas or thoughts (be nice)???
I am encountering the same problem, trying to upgrade a 7137 virtual machine to 7264 x64. Getting the 0xc0000409 error message near the end, then it reboots and backs everything out.