Windows 10: Can’t activate Windows 10 because the previous windows wasn’t activated? Please help!

Here’s the jist of it. Built a PC, and I’ve got an old windows key I used, honestly don’t know if it’s home or pro as I only wrote it down. Installed windows using that key, and my PC started running Windows 10 home 1607. I signed into my microsoft account, and it changed to windows 10 pro. It then updated to 1903, but it says I need to activate it. I tried to use my windows 7 pro key, as I figured I’d have to use the pro key to activate pro, duh. But when I try, it says windows can’t be activated because the previous version wasn’t activated. Here’s the last thing, this pro key was used by my friend a few months ago. Is it not working because he has already used the key? Or is it something on my end? I know it’s a stupid issue but I can’t seem to find help. Any is appreciated!

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:)

 

Windows 10 Activation (Insider)

I did a full clean install of Windows 10 a while back and it will not activate. I didn't do a clean install from Windows 7/8/8.1 it was from Windows 10 (activated) so I expected it to activate just fine since it was fine before hand.

My Windows 10 license wasn't created from a previous Windows 7/8/8.1 key I got it from signing up to be an insider back in Nov of 2014. I installed a preview build on my laptop from the insider program and it worked just fine and it automatically upgraded to newer and newer preview builds and then to the full release automatically, fully activated and working fine. I did a full clean install not long ago (expect it to go through without issue since it was working before) and now it will not activate and I can't find any info on how to get it to activate and I can't seem to find the insider Windows 10 key.

Microsoft online support was useless and the gave me the toll free number to tech support.. I am currently on the phone waiting, they said it could be a 1hr 30min wait.. sigh.. Any help would be appreciated. Thanks.

 

Windows 10 Activation (Insider)

How long did you wait for activation?
When I re-installed with a fresh install... it took a few hours to sync and activate.
However, it did, finally, activate.

 

Windows 10 Activation (Insider)

Hi!

I signed up in the windows insider program and got windows 10 free - the windows 10 insider preview updated to windows 10 pro.
Today i got another SSD and did a raid 0 on my system forcing me to do a clean install of windows but now it wont activate anymore.
Signing in with my microsoft account that was linked to the insider program didnt help.
Maybe i got this problem since i quit the insider program for several days and signed up again after i found out that my win 10 wont activate anymore.
Any ideas how to fix it?

Lauri