Windows 10: Unable to Activate Windows 11 Pro After SSD Replacement

Hello,I had Windows 11 Pro activated on my desktop PC using a non-OEM retail/boxed license. Unfortunately, the SSD in that system failed and is no longer functional. After replacing the SSD and reinstalling Windows, I’m now receiving an error stating that my product key is already in use.Since the original SSD is completely dead, I’m unable to deactivate Windows on the old installation. I purchased this license as a lifetime retail key, and as far as I understand, it should be transferable to new hardware or reinstalls on the same machine.How can I reset or reactivate my license on this new

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SSD Replacment Unable to Activate Windows

Recently replaced my SSD after 4 years. Unable to Activate Win. The system is showing incorect product key? Windows was purchased from Amazon.

The question which component replacement requires a new Winows license purchase?

 

Unable to upgrade Windows 11 Home to 11 Pro

Thanks much, Dave, indeed it was a big job.

Clean install of Windows 11 from a bootable USB helped to Activate the Pro.

Just to summarize what was done:

1. Took backup of the drives and save some on cloud.
   
2. Installed the Media creation tool app as you suggested (Windows 11 herunterladen)
   
3. Connected the USB and ran the application and downloaded the Windows 11.
   
   1. additional thing which I had to do is to install WLAN driver to the USB in advance, to have the WIFI option available as it was required to connect to a network to download the latest windows features while reinstalling the Windows, and Wi-Fi option was not available.
      
4. Turned off the 'Secure boot' from the BIOS menu.
   
5. Changed the 'Boot Order' in the BIOS menu to first use the USB Boot.
   
6. Saved and Exit, which triggered Restart and Windows installation.
   
7. During the network connecting stage to install the latest updates and features - 'Let's Connect you to a network', I opened the CMD (Shift + F10) and ran than WLAN driver exe to install it and then I was able to connect to my WIFI network.
   
   1. Optional to this step is to BYPASS the network connection stage by following this - bypass "lets connect you to a network" - Microsoft Community
      
   2. Then, doing that manually once Windows has been installed.
      
8. Once everything is set-up, I followed the suggestion from this again, and it worked - Unable to upgrade Windows 11 Home to 11 Pro - Microsoft Community
   

 

Windows 10 Pro's digital license for activating Windows 11 on another SSD

I currently use Windows 10 Pro with a digital license and I'd like to buy another SSD for my PC and install Windows 11 on it. When do this, I guess the digital license will activate Windows 11 Pro too on the new SSD. If I now swap the SSDs and decide to use Windows 10 again, will it remain activated or will I be able to only use Windows 11 from now on? In other words: will both installations remain activated so I can swap the SSDs anytime or will I be able to use only one of them?