Office 2007 Trial Key activation problems

[Hayworth]

I am trying to reinstall trial version of Office 2007 but i am not able to make out why program is indicating that "Trial has expired and needs to be converted". I am quite sure that there is still time for it to get expired. Is there anything i can try out for reinstalling it successfully?

[ThoMas321]

There are possibilities that your Opa12.dat (license file) might have got corrupted. If that's true then you wont be able to simply uninstall and install 2007 Office product as Opa12.dat file stays unaffected during installation. Anyways you can try deleting license file, for that type "%AllUsersprofile%\Application Data\Microsoft\Office\Data" without quotes in run, click on "ok". Once you get Opa12.dat file, simply right click on it and delete it. Juts make sure that you are not deleting opa12.bak file. Once you have deleted it start any 2007 Office program for starting Activation Wizard, you can try to activate a trial code from the wizard.