I was running Windows 8 with a valid corporate MAK license and upgraded to 8.1. I am now getting a "Activate Windows" message in the lower right corner of my screen. I tried using "the slmgr.vbs" script but receive an error: "Error: 0xC004E016 On a computer running Microsoft Windows non-core edition, run 'slui.exe 0x2a 0xC004E016 to display the error text."
Running slui.exe on the same desktop tells me the error is "The Software Licensing Service reported that the product key is invalid"
What steps do I need to take to apply this VALID MAK license to my work desktop?
Thank you for any advice.