[7] Trying to downgrade from ULTIMATE to PRO, crashes with BSOD at 62% of final step

A

astrosynthesist

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Joined
Feb 24, 2018
Posts
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At first glance this appears to not be relevant to this particular board, but in trying to trace down that problem I've been led to fix windows update first and foremost. Please note that as far as I'm aware Windows Update DOES function correctly at this time and my system claims to be up to date. I am currently left with 6 SUR errors related to avast somehow. You'll see the log files anyways.

Some background: I own a legal key to Windows 7 Pro x64. A friend of mine suggested that since Windows 7 is out of Microsoft's product cycle that I could upgrade it to Ultimate with little risk, and provided me with "his Ultimate anytime upgrade key" that he claimed to have purchased and that was valid since he uses 10 now. It turned out to be a prank (stupid me), and one of the generic online keys you can find. The stupid thing is that Windows allowed me to do the upgrade but it knew that the key was invalid. So everything seemed kosher for a month and now Windows has tried to activate and it is telling me that I'm pirating software. Great. So I want to go back to my Pro key but there is no official path to do so according to Microsoft without a clean install. My goal is to downgrade to Home Premium (The only disk I have), use an illegal key to anytime upgrade to Professional, then switch back to my legal key, stuck on the bottom of my laptop (Panasonic CF-53S). I have managed to fool Windows into allowing the downgrade to happen and removed all of the incompatible drivers I'm aware of and iTunes but for some reason when it is migrating my settings back to the new install it fails at 62% with the following in the log error file every single time, no matter what I do (I have attached that log file in case any of the other noncritical driver errors may be relevant to diagnoses, but not the full log unless someone would like to see it):
2018-02-24 01:32:44, Error [0x08038d] MIG Failure while calling IPostApply->ApplySuccess for Plugin={ServerPath="%windir%\system32\Migration\netiomig.dll", CLSID={ea51459a-a30d-4a33-b294-0e0163551c75}, ThreadingModel=Apartment}. Error: 0x80070490

I have done every imaginable step from uninstalling Avast and running in reduced startup mode, to sfc and SURT. They both have found and fixed errors (chkdsk came up empty), but the SUR log is left with 6 persistent Avast-related issues (CSI C Mark Deployment Not Marked) that it can't fix automatically. And now I am here. I would like to note that I am like a level 10 *nix superuser and only like a level 1 windows poweruser. I am savvy with much of the O/S and can jump through some of the hoops but not nearly as much so as you all. I really appreciate any help you may provide. Thank you in advance.
View attachment SFCFix.txt
CBS zip:
Dropbox - CBS
 

Attachments

Re: Trying to downgrade windows 7, crashes with BSOD at 62% of final step

In my opinion since you have a valid Win 7 key on the laptop your best bet is to download a fresh iso copy of Win7 set it up on a flash drive and reinstall.
Download Windows 7 Disc Images (ISO Files)

Second to that would be to try a upgrade install.
 
Re: Trying to downgrade windows 7, crashes with BSOD at 62% of final step

Thank you for your reply!
I am currently trying the "upgrade install" route as I don't want to go through the effort of reinstalling all of the software I have on my computer along with restoring the server integration I have set up for myself. Since every failed upgrade install takes about 3-4 hours to fail this is unsustainably time consuming and as such this post is going to be my last attempt at fixing the upgrade install before I just say screw it and do a clean install.
I can't believe I didn't think of downloading that iso though. I'll give that a shot because then I don't have to deal with this home premium nonsense at the very least. Thanks for your suggestion, I'll be posting results soon!
 
Re: Trying to downgrade windows 7, crashes with BSOD at 62% of final step

And Microsoft won't give it to me because it is an OA key. I have to check and see if Panasonic has an iso posted.
 
Re: Trying to downgrade windows 7, crashes with BSOD at 62% of final step

Update: No luck on the iso yet but I created my own custom SFCfix.zip based on other posts and have resolved my SUR errors. I am debating whether to spend another 4 hours trying another install or if I should wait until someone has some info on that netiomig.dll error and whether or not this should have fixed it. I am hoping to resolve this today, so I guess I'll see if I get lucky and forum turnaround time is short today.
 
Re: Trying to downgrade windows 7, crashes with BSOD at 62% of final step

This did not fix my upgrade error. I tried again and it failed at the same point with the same log as posted above. Please help!
 
Re: Trying to downgrade windows 7, crashes with BSOD at 62% of final step

Does your hard drive contain a recovery partition?
 
Re: Trying to downgrade windows 7, crashes with BSOD at 62% of final step

No it does not. It was recycled and whoever did that did a complete hard drive swap and fresh install of Windows 7. I'm going to reinstall tonight if there aren't any ideas of what I can do to fix this error.
 
Re: Trying to downgrade windows 7, crashes with BSOD at 62% of final step

In my latest attempt I have stolen an idea from the 62% freeze solution. I set my environment variable "MIG_UPGRADE_IGNORE_PLUGINS" to "netiomig.dll". We will see if this was a dumb idea in a few hours. Worst case I just reinstall anyways.
 
Re: Trying to downgrade windows 7, crashes with BSOD at 62% of final step

It still didn't work. This time there is no error in the logs, but I got the same failure. This is maddening. Reinstall imminent unless I happen across something soon.
 
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