If Office activation fails, you'll see Unlicensed Product or Non-commercial use / Unlicensed Product in the title bar of your Office apps, and most features of Office are disabled. To restore all features of Office, you'll need to fix the problem that's causing activation to fail.

In Excel, show items or values in logical groups like months or quarters for ease of summarizing and performing data analysis.

How to track changes in Word using revision marks. Accept, reject, or hide changes made by others working in the file.

See a list of options available for starting Windows in diagnostic modes such as safe mode.

How to hide and unhide columns and rows in an Excel worksheet. Restrict access to only the data you want to be seen or printed.

Alternatively, you can install any website by going to the top corner of the browser and select Settings and more … > Apps > Install this site as an app.

The sign-in options in Windows serve various purposes to enhance your user account security and sign in convenience. You can access the sign-in options from the Settings app.

Learn how to troubleshoot Windows Media Player errors. Explore resources for general help with Windows Media Player.

Get answers to questions about how indexing affects searches in Windows 10.

When you're using a Microsoft 365 program with Windows, there are two ways to copy the contents of what you see on your screen (commonly referred to as a "screenshot" or "screen capture").