MATLAB: When generating a license file or activating a computer in the license center, why do I get the error message “MathWorks systems are currently unavailable. Try again later”

When trying to generate a license file for my network license or activate a computer in the license center, why do I get the error message "MathWorks systems are currently unavailable. Try again later. [ref XXXXXXXX]"?

Best Answer

This issue may occur when a server machine is activated by a user who no longer has a valid MathWorks Account.
Deactivating and reactivating the license server allow you to generate a new license file. 
This issue can also be caused due to an incomplete user profile. Finishing the user's profile including setting their country code should resolve the issue.