For instructions, search for Microsoft help resources at Office Support. If all else has failed, you can manually uninstall. (The following takes Excel as an example.) Select Account, find the About button under Product Information and then check for the following : Click-to-Run: Click-to-Run installation has a version and build number, and include the phrase Click-to-Run. If you still have problems, try referring to Uninstall Office from a PC. Open the Office program, and then select file at the upper-left corner. Once Office Installer launches, follow the instructions to remove Office from your computer.Put the Office installation disc into the CD drive and double-click Setup.exe.If you are unable to remove Office by the above means and you have the installation disc, try launching the Office Installer: The Microsoft Office suites can leave files on your computer that, even after an uninstall, interfere with subsequent installations. Double-click the older version to start the uninstall wizard, and follow the prompts to uninstall the program. Find the older version of Microsoft Office in the list of programs.Once uninstalled, you will have to download the correct version, and install it again. If you have Microsoft Works, Encarta, or an independent component of Microsoft Office (such as Word, Excel, Outlook, or PowerPoint), remove it before attempting a new installation of Microsoft Office. Uninstall Microsoft Office 32-bit & install 64-bit version To uninstall Microsoft Office, if you use this Uninstall Office Tool from Microsoft, the uninstallation will be complete and cleaner. Other Microsoft applications sometimes conflict with a Microsoft Office installation.UITS very strongly recommends that you uninstall any other versions of Microsoft Office on your Windows computer before installing a new version.

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