如果缺少“更新选项”且只有“关于”按钮，则表示你有批量许可证安装或公司正在使用“组策略”管理 Office 更新。请尝试 Microsoft 更新或联系公司的技术支持。

Learn more. Fix problems with apps from Microsoft Store. Manage your purchases from the Microsoft Store. 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.

Select the cell you want to combine first. Use commas to separate the cells you are combining, use quotation marks to add spaces, commas, other text, or the ampersand symbol (&) with the next cell you want to combine.

We're committed to delivering continuous innovation by releasing new features and enhancements into Windows 11 more frequently. Windows devices get new functionality at different times as Microsoft delivers non-security updates, fixes, improvements, and enhancements via several servicing technologies—including controlled feature rollout (CFR). ...

You can use the audit log reports provided with SharePoint to view the data in the audit logs for a site collection. You can sort, filter, and analyze this data to determine who has done what with sites, lists, libraries, content types, list items, and library files in the site collection.

Disable all macros except digitally signed macros Macros are disabled, and security alerts appear if there are unsigned macros present.However, if the macro is digitally signed by a trusted publisher, the macro just runs. If the macro is signed by a publisher you haven't trusted yet, you are given the opportunity to enable the signed macro and trust the publisher.

Add sites to your favorites in the new Microsoft Edge :. Add the current page from the address bar. Open Microsoft Edge and go to the site you want to add to your favorites.

The IFS function checks whether one or more conditions are met and returns a value that corresponds to the first TRUE condition. IFS will allow you to include up to 127 pairs of conditions (the test if something is True and the result if something is true). IFS can take the place of multiple nested IF statements.

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Surface Pro 4 features Express yourself. Enjoy a natural writing experience with a pen that feels like an actual pen. Use Surface Pen to launch Cortana (not available in all languages and countries/regions) or open OneNote and quickly jot down notes or take screenshots.