I tried to upgrade my Windows 7 Home Premium to Professional but the upgrade failed and here's the error in the upgrade.log file: DoTransmogrify failed due to error 0x80070002
I did a quick search and afterwards disabled UAC as well as my Anti Virus. UAC asked me to restart the computer so I did. However, to my surprise, when the computer was booting, the upgrade process continued and finished successfully (I'm using Professional now). So I want to know why did this happen? Originally it said unsuccessful then exited yet when I restarted the computer everything continued just fine. Will I run into any problem in the future?