Windows 10: Activating Windows 10 on a New Microsoft Account

I recently re-installed Windows on my computer after a hardware change and I created my user account with a different Microsoft account than what was on my old install. Now, when I try to activate Windows 10 with my old product key, I get error 0xc004c060 "Unable to activate Windows - We can't activate Windows on this device because you don't have a valid digital license or product key"I have already removed the Desktop from my old Microsoft account, but the activation still does not work. How can I activate Windows on this new Windows installation? Thank you

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Windows 10 Tweaks

As you may already know, Windows 10 (as well as Windows 8) allow you to log in with a valid Microsoft account, instead of creating a local account that only works on your machine. However, you may prefer to keep a local account for privacy reasons. If you do, though, some Windows 10 features—like Cortana—may not work. Despite the default behavior, the Windows 10 Store is not one of them. You can still log in to your Microsoft account for just the Store without switching to a full Microsoft account. The process, however, is not terribly obvious. To do so, follow these steps:

• Launch the Store from your Start menu.
• Click the user icon next to the search box.
• Click “Sign-in” from the menu that appears.
• Choose “Microsoft account” and log in like normal.
• When the “Make it yours” box appears do not enter your password. Instead, click “Sign in to just this app instead.”

from Lifehacker

 

Strange Windows 10 User Account issue.

Unfortunately I had done those steps numerous reboots, it just, reappears for no good reason. The base account isn't even a Microsoft account, it's a local account.

I haven't quite tried the built in administrator account on W10, but so far in my experience on my own computer, the built in account seemed to have absolutely no more control than I did on my own.

It's just strange, I go in, it warns me twice about deleting the account, then it's gone. Reboot, and it's back?

EDIT: Just to specify, both command line and Netplwiz both say only HIS account exists on the computer, it doesn't list this rogue account. This is what I meant in my first post about the fact that even Windows doesn't seem to believe it exists, HALF the time. *Frown

 

Loophole Lets You Freely Upgrade to Windows 10 After Offer Expiry

If you upgrade your 7 install to 10, which is worth it IMHO, make sure you link to a Microsoft Account. Otherwise you might not be able to easily regain the key if they block using 7 keys in the future.

You don't need to use the Microsoft account as your profile on so you can still bypass logging in at setup and creating a local account. All you gotta do to link your 10 account to your MS install (if you choose not to use your MS account as your profile), is to simply do the following:

• Click Start
• Click Settings
• Click Update and Security
• Click Activation
• As or with Admin permissions, click Add Account
• Login with MS Account credentials.

Then you should see a message that reads:

More info: How to reactivate Windows 10 after a hardware change , https://www.tenforums.com/tutorials/55398-microsoft-account-link-digital-license-windows-10-pc.html , Link a Microsoft Account to a Windows 10 license - gHacks Tech News