Windows 10: can't activate my retail windows 10 Home key on my new windows 11 Home system

as the title says, I can't activate my new windows 11 Home machine with the retail windows 10 Home key witch should be attached to my Microsoft account but it doesn't activate. Things I have tried:Using "slmgr.vbs -dli" "slmgr.vbs /upk" "slmgr.vbs /cpky" commands to check if I have a retail key, and removing it from my old pcWhen pressing activate this error code appears "0x803fa067", Troubleshooting didn't help.Trying to activate while not connected to the internet didn't helpTried using an OEM key, didn't work. a message appeared saying, that this key had already been used. I then put said O

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Installing Windows 10 using Windows 7 key

Nope, you need to install Windows 10 first and make sure the Windows 7 key is transferred to your Windows account after you've installed Windows 10 (not quite sure how that works). I missed the last step and I could not activate Windows 10 after a re-install... Microsoft seem to have done everything they can to make it a PITA. Also, it's technically too late to do this now anyhow, as the upgrade offer has expired. But KMSPico works quite well...

As for getting rid of Windows, delete the Windows folder.

 

Windows 10 Tweaks

Pressing “Windows+Pause Break” (it’s up there next to scroll lock) opens the “System” Window.

Windows 10: In the new version of Windows, Explorer has a section called Quick Access. This includes your frequent folders and recent files. Explorer defaults to opening this page when you open a new window. If you’d rather open the usual This PC, with links to your drives and library folders, follow these steps:

• Open a new Explorer window.
• Click View in the ribbon.
• Click Options.
• Under General, next to “Open File Explorer to:” choose “This PC.”
• Click OK

credit to Lifehacker.

 

windows 10 key

Thanks but I don't want to do any decrypting. I want to download a Win 10 ISO from Microsoft and install it using my Win 8 key. No other steps required. Is that possible?