Certificate authority (CA) A certificate authority is an entity similar to a notary public.It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired.

Note: This article explains the minimum system requirements for running Windows 11 on a PC. Minimum system requirements are designed to provide a great computing experience across a variety of devices, now and into the future.

Training: Watch these videos to help your school, work, or organization use Microsoft Teams to video conference, work remotely, and become proficient using Teams.

Note: If you're using the default app bar configuration in the Microsoft Teams desktop app, use the commands in the table below.If you've changed the order of your apps or added additional apps, the command depends on the app's sequential order on the app bar. For example, if you've moved Calendar to the top of the app bar, press Ctrl+1 to open it, not Ctrl+4.

Learn how to use the Activation troubleshooter to resolve common activation issues in Windows.

Get help and support for Microsoft Edge. Find Microsoft Edge support content, how-to articles, tutorials, and more.

You can use section breaks to change the layout or formatting of pages in your document. To change formatting in a document, insert a section break at the beginning of where you want the change.

The latest Windows 11 2024 update is all about enhancing connectivity with the introduction of Wi-Fi 7, boosting productivity with new quick settings, and improving accessibility with advanced assistive hearing devices support. Plus, it introduces energy-saving features that extend battery life and reduce energy consumption. And for those eager to embrace the future, we've got a slew of ...

To create your profile, we recommend you use your Microsoft account email address. Using the same email address to sign in to Xbox allows you to manage your settings and billing information through a single account.

If you weren't able to change your password. If you couldn't change your password this way, see Reset your Microsoft account password. Need more help? Contact Support. For technical support, go to Contact Microsoft Support, enter your problem and select Get Help.If you still need help, select Contact Support to be routed to the best support option.