
At some point, the Office 2010 title bar also turns red.īut by running a file named "ospprearm.exe," users can reset the time-until-activation to 30 days. In Office 2010, the messages change on the 25th day after installation. As the grace period shrinks, however, messages appear on the screen reminding the user to activate the product. During the 30-day grace period, the software works as if it has been activated. Once you complete one of the Methods listed above you should be able to change your Product KeyĮnter the appropriate product key from the top of this page and click “Continue.Microsoft typically allows users to install and run Office or Windows for up to 30 days without requiring a product activation key, the 25-character string that proves the copy is legitimate. Select the option to “Enter a Product Key.” Select “Change Product Key” (this option was not here on my installation, I used Method 1)Ĭlick on Start Menu > Control Panel > Programs and Features (or Add/Remove Programs, depending on your operating system).Ĭlick on your product, e.g. You should be prompted to reenter your License Key Navigate the registry to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\14.0\Registration\ and delete the whole “Registration” key located under the “14.0” keyĬlose Regedit, Restart an Office 2010 application.

I will show you three different methods of changing the License Key



The solution is to change the product key to another product key. Issue: You go to activate Microsoft Office 2010 and you receive a message stating, “Your copy of Microsoft Office Professional Plus 2010 cannot be activated because the specified Product Key has already been activated the maximum number of times permitted for your software license as specified in the Microsoft Software License Terms.”
