Why the product key for Microsoft 365 is not working?

If your product key for Microsoft 365 is not being recognized, there could be several reasons for this issue:

1. Incorrect Key Entry: Ensure that you are entering the product key correctly, as it is case-sensitive and must be entered exactly as it appears.
2. Key Already Used: The product key may have already been used to activate another account. If this is the case, you will need to contact Microsoft support for assistance.
3. Invalid Key: The product key may be invalid or not intended for the version of Microsoft 365 you are trying to activate. Make sure the key matches the product you purchased.
4. Region Restrictions: Sometimes, product keys are region-specific, and using a key outside the intended region can lead to activation issues.
5. Technical Issues: There may be temporary technical issues with the Microsoft activation servers.

If you continue to experience problems, you can refer to the troubleshooting resources provided by Microsoft for further assistance.

References:

• Activate your Microsoft 365 Apps for Business subscription
• Problems with your Microsoft 365 for business product key?