Noob Whisperer
Has anyone attempted an upgrade yet?
First attempt
"Windows installation was not successful."
"Your previous version of windows is being restored."
"Do not restart your computer during this time."
Setup Error Log in C:\Windows\Panther folder blank

Second attempt using the Setup.exe file from the sources folder. Behaves more like a 7 install. No fish.
"Windows installation encounterd an unexpected error."
"Verify that the installation sources are accessible and restart installation"
Error Code: 0xC0000005

Just wondering if anyone else has had a run at an upgrade install and how they fared?


Essential Member
A 64-bit upgrade worked flawlessly (or as flawlessly as an upgrade can) on my old system.


Noob Whisperer
Thanks Mitch.
That's what I wanted to know.
I have tried three times and failed three times.
with the errors noted above.
But yet a custom clean install works flawlessly every time. Same exact hardware and exact same 64bit install files resource on a 16Gig Thumb Drive.
So I can only assume that it is having some issue moving over some system settings, profile settings, or perhaps some application. Perhaps I'm asking and hoping for too much, as I'm attempting to upgrade my Main PC that I use everyday. It has a lot of programs installed and multiple profiles, etc.,
The upgrade seems to complete but on what I would presume is the final reboot, instead of a log on screen or the Window shade, I get that error.


Noob Whisperer
Thanks Clark, going to give it another go tomorrow. A little late and a lot frustrated right now.
I'm not giving up till I figure out what is preventing the upgrade from completing successfully. It's just a bit time consuming, cloning my Windows 7 drive takes a while and then the upgrade is considerably longer than a typical clean custom install.
So tomorrow is another day. One of the nice things about being retired.


Excellent Member
Microsoft Community Contributor
I found this description of one of the updates that might be relevant, since it mentions a rollback of an install.

The BITS service crashes during the installation of Windows 8 Consumer Preview

If you ever get the log file, check for the special words of rollback (roll back) or failed or failure or error... It might help show the relevant section.

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