Which version of Microsoft Office (2016,2013,2010,2007) or Microsoft Word/Excel/PowerPoint etc. is it?
Open Start > Settings > Apps > Apps & features
Scroll down to Microsoft Office
Now, wait while the repair wizard starts up.
Choose the type of repair you would like to perform. Depending on the severity or availability of your Internet connection, you could try the first option, Quick Repair, which is much faster and tries to fix the problem without a data connection.
If that doesn’t resolve the problem, then go back and try the Online Repair option. For my particular issue, I ultimately had to use the Online Repair.
The repair process is straight-forward following the wizard. Note that you’ll need to save your work and close all Office programs first, and then click Repair.
Then wait while the repair process runs.
You will notice the repair experience is similar to a fresh installation. The amount of time it takes will depend on your connection speed and what the issue is.
You will see your Office apps light up in their respective colors while the repair completes.
Once the installation is complete, restart your computer just to be sure and launch your apps and verify if the problem you were having is resolved.
Best regards, Andre Da Costa Independent Advisor for Directly
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First make sure that you haven't just lost the shortcuts for yor Office programs. If you click the Start button in Windows 10 and then start typing word, you should see Word in the list of search results. Right-click it and choose to pin it to the Start menu
and/or the taskbar. Do the same with Excel and PowerPoint.
If that doesn't work, note that resetting the computer might mean that it was restored to state it was in before you first installed Office. If that is indeed what has happened, you will have to reinstall Office using your product key. You can download a backup