How to extend the Microsoft Office 2010 trial

1. Install the Office 2010 trial of your choice. Wait until the end of the initial 30 days to complete the rest of the steps. Office will have a pop-up reminder when the trial is about to expire.
2. Run the command prompt as an administrator. To do this in Windows 7, go to the Windows orb logo (formerly the 'Start' menu). In the search field, type 'cmd' and then press the 'Ctrl' + 'Shift' + 'Enter' keys together. Click 'Yes' if prompted by the User Account Control.
3. Enter 'C:\Program Files\Common Files\Microsoft shared\OfficeSoftwareProtectionPlatform\ OSPPREARM.exe' into the command prompt window. To paste the address into the command prompt right-click and select 'Paste' in the command prompt window. Press 'Enter.' If your main hard drive is not 'C,' or if you have a different operating system, OSPPREARM.exe could be located somewhere else. In Windows 7, you can search your hard drive for the file by opening your main hard drive folder and typing 'OSPPREARM' in the search box in the upper right-hand corner. Once you have located OSPPREARM.exe, copy the location into the command prompt and press 'Enter.'
4. Close the command prompt if the message 'Microsoft Office rearm successful.' is displayed. Your trial period was extended 30 days. If you do not see the message, try repeating the steps above. When you have reached the maximum rearms, the command prompt will produce an error message.