If your phone number or email changes, it's important to promptly update the security contact info on the Security basics page so we can work with you to keep your account secure and active. If you sign in to your account while traveling or if you install a new app that signs in with your account, you may get an alert. We just need you to ...

The languages that you use in a document can affect how your Office program checks and presents readability scores. If you set up Word to check the spelling and grammar of text in other languages, and a document contains text in multiple languages, Word displays readability statistics for text in the last language that was checked.

Learn how to use the PC Health Check app to help you improve your device performance.

Learn how to redeem a gift card, code, or Office product key and spend your balance at Microsoft Store online, on Windows, or Xbox.

Learn how to create installation media for installing or reinstalling Windows 7, Windows 8.1, or Windows 10.

Learn how to troubleshoot Bluetooth problems in Windows. Resolve issues connecting a Bluetooth device or accessory.

Find out how to submit a request for a refund for a purchase of digital Xbox content.

Learn how to install Office 2013 on your PC or Office for Mac 2011.

Find out how to fix sound or audio problems in Windows.

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