Windows 10: Lost Windows 10 activation after multiple reinstalls

My SSD was wonky, so I had to uninstall the OS from there after fresh installing it.

I then reinstalled it to my HDD. However, I lost my digital activation license. How do I get it back?

:)

 

[Solved] Windows 10 keeps reinstalling KB3119142

I noticed quite some time ago that KB3119142 (Update for Microsoft Visual C++ 2012 Update 4 Redistributable Package) kept reinstalling itself for some reason. At least once daily. Sometimes up to several times a day. I just ignored it. It didn't seem to be doing any harm. And I figured they'd eventually fix it. Well...days turned into weeks, weeks into months, with no end to the problem in sight. It dragged on unsolved for at least the last few months. Literally reinstalling itself hundreds of(at least a hundred, felt like more) times in that period of time.

So I finally googled it a couple days ago. And just got around to fixing it today. Which appears to have worked. And it couldn't have been easier to do. I feel so stupid to have let it intimidate me for so long.*Oops!

Below are links to the thread that I got the fix idea from, and the official MS support info page for KB3119142(from which I quoted the above).
http://www.tenforums.com/windows-up...-windows-10-keeps-reinstalling-kb3119142.html
https://support.microsoft.com/en-us/kb/3119142

 

Upgrading cpu and mother without reinstalling windows 10

did it with a b250 motherboard upgrading to z270, did not need to reinstall anything, windows was still activated
did it with the z270 into z370 and lost windows activation, however did not have to reinstall any drivers, windows handled everything

i don't recommend doing it by going from amd > intel

 

How to reinstall Windows 10 if my computers used the free upgrade from 7 and 8?

You will need to tie it to your Microsoft account. I've wiped multiple drives and pc's, and just reinstalled windows 10 from USB and then logged into my Microsoft account and it activates. One's you login with your microsoft account just go to the Microsoft website and verify your pc is activated on your account before you wipe your drive and do the reinstall.