Select Review activity to check for any unusual sign-in attempts on the Recent activity page.If you see account activity that you're sure wasn't yours, let us know and we can help secure your account—if it's in the Unusual activity section, you can expand the activity and select This wasn't me.If it's in the Recent activity section, you can expand the activity and select Secure your account.

On your Xbox 360. To change your country/region on Xbox 360, you can't simply update your location as with the Xbox One or Xbox Series X|S. Instead, you need to migrate your Xbox profile, which could impact other subscriptions and services.

Install the S/MIME control. Get a certificate, sometimes referred to as a key or digital ID. The first step to use S/MIME is to obtain a certificate from your IT administrator or helpdesk.

Advanced Systems Format (.asf) The Advanced Systems Format (ASF) is the preferred Windows Media file format. With Windows Media Player, if the appropriate codecs are installed on your computer, you can play audio content, video content, or both, that is compressed with a wide variety of codecs and that is stored in an .asf file.

Clear the Don't download pictures automatically in HTML e-mail messages or RSS items check box.. Or, if you're using Outlook in Microsoft 365, on the Automatic Download tab, select or clear the options as you see fit.. The options are arranged hierarchically. If you clear the first option, the subordinate options will become unavailable, meaning that all pictures will be automatically downloaded.

Data Execution Prevention (DEP) is a technology built into Windows that helps protect you from malicious code launching from areas of memory that have been designated as for data only.

Some extensions change browser settings like your default search engine, new tab page, and other types of site data. To prevent extensions from changing the preferences you set up when you installed Microsoft Edge , the browser automatically turns off extensions that might change your preferred settings.. You can change settings for your extensions at any time.

Check the Xbox services, games, and apps for any service outages.

Learn how to enable live captions in Teams meetings and see real-time subtitles for what's said. Improve your accessibility and comprehension.

发布时间：2021 年 8 月. 本文适用于由于电脑当前无法安全启动而无法升级到 Windows 11的用户。 如果你不熟悉此级别的技术详细信息，我们建议你查阅电脑制造商的支持信息，获取特定于你的设备的更多说明。