0x20006 Safe_os Replicate_oc

[Victoria Steigerwald]

Thisweek, a client brought me a Windows 7 PC which refused to upgrade to Windows 10, despite their having reserved a license long ago for the OS and attempting to install it repeatedly. The error message they were receiving was:

My usual remedial measures, after poring through setup error logs and all that fun stuff, were completely unsuccessful in this instance. Myriad internet searches also turned up lots of other people with the same problem, but no actual solution. Everyone simply wiped/reinstalled Windows.

I did what you did. I also reinstalled Windows 7 and I got the Windows 10 Update Assistant Button but when I continued every time it tries to install windows 10 it ends up with windows 10 install failed error 0x8007001f. Until now I cannot upgrade to Windows 10 again. It sucks.

Woohoo! Thank you so much for this. I have been stuck with this issue a couple of times before and hit it again. I have had to do a clean installation in the past. I can confirm that doing a repair install of Windows 7 with the original media disk (Service Pack 1 version), retyping the product key on the case, activating Windows, reboot and try the Windows 10 media (currently 1903) again actually works. Windows 10 has installed trouble free and activated automatically.

I was recently trying to get win 7 pro to upgraded to win 10 1909..I tried everything under the sun and kept on getting the safe_os replicate_oc errors. i tried the windows 7 in place upgrade you suggested and it did not go through.

Downloaded the 1607 (from 2015) version of the Windows 10 ISO and that went through.

THEN i grabbed the 1809 Version of the Win 10 ISO so I could preserve my applications and files.. that options was greyed out trying to go from 1607 to 1909.. directly but when i tried to go from 1809 to 1909 it was successful.

Hola, excelente ayuda amigo, me resolviste el problema que tena, ya actualic sin necesidad de reinstalar todo. Tambin haba probado todas las opciones que mencionas sin poder resolver el problema.

Un saludo desde Santiago de Chile.

Regardless of the cause, it would be interesting to dig through resource monitor to see what particular storage related items are being accessed at the time of the hang. That may provide the clues necessary to fix the problem.

Thank you so much for this solution.

I have worked my way through many suggestions from other supposed fixes and none worked.

I was about to give up and do a fresh install when I came across this site.

I followed the instructions, including re-activating windows 7 after the upgrade install and then the upgrade to windows 10 worked!

Just a couple of tips that may help others:

your windows key can be retrieved before you proceed with anything from free software: _cd_key_viewer.html

The windows disc files can be downloaded using another free software:

-science/microsoft/67-microsoft-windows-and-office-iso-download-tool?showall=1

The ISO file can be used to create a Bootable USB disc with:

All the above are free, legal software and have been invaluable in maintaining and upgrading computers for me.

Just so you know: I am a professional IT guy and I have been trying to upgrade my PC for several years. I tried everything, including all things MS and other parties advise. Nothing worked, every time different errors occurred. I had alreay given it all up. Until I found this page.

I did everything as instructed and it almost worked out of the box. After the upgrade to Win10 my PC kept on running into Blue Screens of Death with a restart after that. I once interrupted it and had it start in safe mode with network. After I had done that it booted right up into Win10. Zero problems after that.

Your solution worked for me. The same error occurred on win server 2016 standard when tried to upgrade to win server 2019 standard 1809.

Booted the OS with win server 2016 to upgrade to the same system and it worked. Then I have used win server 2019 standard 1809 and the upgrade worked.

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