When you open a Microsoft Office Professional Plus 2010 application, many features are disabled. This problem occurs when Office Professional Plus subscription expires and the application becomes unlicensed.
Additionally, you may experience one of the following symptoms:
- When you click File and then click Help in the Office Professional Plus 2010 application, you receive the following message:
Product Activation required
- In the title bar of the Office Professional Plus 2010 application, you see the following:
Full Article & Solution: http://support.microsoft.com/kb/2390460