

I was required to enter my admin password to trash the first two files but not the third. One suggestion was to move three licensing files from the Mac’s Library folder to the trash:Ĭom.plist Microsoft offers several methods for resolving this type of error.

Microsoft’s support site states that the error could be triggered because the licensing file is either missing or corrupted or because the Installation ID for the license does not match the installation ID of the computer on which Office for Mac is installed.

Encountered a situation recently where I had to reenter my product key whenever I opened a Microsoft Office 2011 application, even though my software was already licensed.
