If users encounter issues with their Microsoft Office product key ending with "Ymv8x", there are several troubleshooting steps they can take:
If you are seeing this partial key but receiving activation errors, try these steps: How to Change Product Key in Microsoft office Microsoft Office Product Key Ending With Ymv8x
Check your email for a "Confirmation of Purchase" or look for the physical card that came in the box. If users encounter issues with their Microsoft Office