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Microsoft Office 2010 Invalid product key

ComTech: IT Support Stirling


You have purchased a new shiny copy of Microsoft Office 2010 and are in the process of installing it.  Up comes the product key screen so you enter your product key and get the error message: Your key is not a valid Microsoft Office product key.  Hey?  The solution to solve this is as follows.

Chances are your laptop came with Microsoft Office 2010 trial software already installed.  The key you have purchased will not work on a trial version of Microsoft Office 2010.  In order to install the copy of Microsoft Office 2010 you have purchased you first have to remove the trial version as it is not possible to install one copy over another. If you have issues removing the trial version using Control Panel (I have had this happen in the past) then use a tool like Revo Uninstaller which allows you to delete registry entries for the software you are trying to uninstall.

Hope this helps.

About the Author

Hi I am Chris Wakefield the owner of ComTech IT Support. I provide Windows and Linux based IT Support, laptop repairs and computer repairs to both business and personal clients in and around Stirling.

For a list of what I can offer you why not visit my website www.comtech247.net where you will find a list of my services, testimonials, blog and much more.

One thought on “Microsoft Office 2010 Invalid product key

  1. I’m an OpenOffice/LibreOffice user, so this doesn’t apply to me necessarily. I am curious though…
    Is there any reason to go out and buy Office rather than register the trial that came preinstalled on a computer? I just wonder if there are features available in one format that aren’t on the other.

    Does it matter if the trial is expired, or can you register it at any time?

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