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.

Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.

From the Overview page, select Office apps and on that page, find the Microsoft 365 product you want to install and select Install. To install Microsoft 365 in a different language, or to install the 64-bit version, use the dropdown to find more options.

If you can't see the desktop and instead see a blue, black, or blank screen, see Troubleshoot blue screen errors or Troubleshoot black or blank screen errors. Check for Windows updates. Learn how to update drivers in Windows using Device Manager to update or reinstall a driver.

Select your version of Microsoft 365 below to learn how to activate Microsoft 365. Activate Microsoft 365 or a non-subscription version of Office. Activate Office that's pre-installed on a new Windows device. Activate an Office purchase or offer that's included on a new Windows device.

Select Install (or depending on your version, Install apps> ). From the home page select Install apps (If you set a different start page, go to aka.ms/office-install .) For Microsoft 365 operated by 21 Vianet go to login.partner.microsoftonline.cn/account. For Microsoft 365 Germany go to portal.office.de/account.

Make a Wi-Fi network public or private in Windows. Fix network connection issues in Windows. In Windows 10, some features of file and folder sharing over a network have changed, including . Read on for answers to common questions about other changes to file and folder sharing in Windows 10.

Convert a document to the Word 2016 mode. You can either work in Compatibility Mode or you can convert your document to the Word 2016 file format. The Word command clears the compatibility options so that the document layout appears as it would if it had been created in Word 2016 .

Turn offline access on or off. Offline is turned on by default in new Outlook for Windows. To turn it off or on, do the following: Select Settings > General > Offline. Select the toggle Enable offline email, calendar, and people to turn offline access on or off. Select Save.

Get help and support, whether you're shopping now or need help with a past purchase. Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.