Learn how to access and manage your Windows sign in options. Use a password, Windows Hello, or a security key to unlock your device.

Do you need some help installing Quick Assist? For the best experience, download and install the new version of the Quick Assist app from Microsoft Store. If you have problems installing Quick Assist, here are some steps to try to get it installed and working properly.

Learn how to get Microsoft account help, troubleshoot sign in issues, keep your account secure, and manage your Microsoft account dashboard.

Find your product key to activate Windows. A product key is a 25-character code that's used to activate Windows and helps verify that Windows hasn't been used on more PCs than the Microsoft Software License Terms allow.

Install Office 2007. Insert your Office 2007 CD into the drive. If the setup wizard doesn’t start automatically, navigate to the CD drive and click SETUP.EXE.

Your Phone is now Microsoft Phone Link! Learn more about our recent name change for our PC and Android mobile apps.

Find answers to top questions about upgrading to Windows 11, from the minimum hardware requirements to where to find the upgrade.

Learn how to troubleshoot Windows activation errors. Browse common activation errors and learn what you can do to fix them.

This article explains how to zip and unzip files.

The Microsoft Teams web app works for most desktop browsers, including Chrome, Firefox, and Internet Explorer.