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Couple of weeks ago I downloaded and installed Office 2007 Trail in my Vista based laptop (earlier it was running with Office 2003 Professional). Now I bought a Full version CD of Office 2007 Home and Student hence want to uninstall the TRAIL version but it is not allowing me to do so. Whenever I click on Uninstall button in Add and Remove program, it says thet installation has been corrupted and cannot be uninstalled. Somebody please help me out.
If the system is not allowing to uninstall the software from Add and Remove program manually, then you can better use a Microsoft Tool called “Windows Installer Cleanup Utility”. Just download, install, run and select each files related Office 12 and click remove. Later run disk cleanup and clear temporary files. Restart the computer and try installing the purchased office suite.
Also refer to this Microsoft Article: http://support.microsoft.com/kb/928218/en-us
Yeah, you need to remove it using the cleanup tool. Also don’t forget to uninstall Activation Assistant as well otherwise it will give you various errors during the new installation and activation process.
As you said you were not able to remove TRIAL from control panel add/remove program, see this, describing the same problem with solution: http://support.microsoft.com/kb/971179