Published August 2021. This article is intended for users who are not able to upgrade to Windows 11 because their PC is not currently Secure Boot capable.

Access, download, or run the Surface app and the Surface Diagnostic Toolkit to help find and solve Surface problems.

If you already have a Microsoft account that you use to sign in to other Microsoft services (such as Windows, Outlook, OneDrive, Office, MSN, and Skype), use that account to create your Xbox account as well.

Note: You might not be able to change the power mode when a custom power plan is selected.If you can’t set the power mode in Power & battery settings, open Control Panel, select System and Security > Power Options, then choose a Balanced power plan.

注意: 如果知道密码，但只想更改密码，请转到“account.microsoft.com 安全”选项卡，然后选择“更改我的密码”。. 如果知道用户名和密码但已停止工作，请阅读我的用户名和密码已停止工作。

Get started with basic tasks in Excel such as opening a workbook, entering and formatting data, calculating data, and trying some quick analysis features..

Safe mode starts Windows with a minimal set of drivers and services to help troubleshoot issues. If a problem doesn't reappear when you start your PC in safe mode, you can eliminate the default settings and basic device drivers and services as possible causes.

Note: Microsoft is updating the way we ask for permission to use your voice data to improve Microsoft products that use our speech recognition technology.This may impact the data you see on your privacy dashboard. To learn more about these changes, see How does Microsoft protect my privacy while improving its speech recognition technology?

Sign in using two-step verification or security info; Create app passwords in Security info (preview) Set up a phone call as your verification method

Scenario. Description. Recommended Solution. Add Teams meeting add-in for Outlook. Helps fix the issue where teams meeting add-in is missing or is not loaded, preventing you from creating teams meeting from Outlook.