Learn how to tell if your Office software is genuine. To help determine if your Microsoft software is genuine, go to our How to Tell site for more information. Here you'll learn about authentic packaging, including what to look for with product key labels, and Certificate of Authenticity (COA), how to report counterfeit software, and find out what your shopping and licensing options are.

=RAND()*(b-a)+a. If you want to use RAND to generate a random number but don't want the numbers to change every time the cell is calculated, you can enter =RAND() in the formula bar, and then press F9 to change the formula to a random number. The formula will calculate and leave you with just a value.

Important: If you're unable to insert a form, make sure your web add-ins aren't disabled.In PowerPoint, select Files > Options > Trust Center > Trust Center Settings.In the Trust Center dialog box, choose Trusted Add-in Catalogs.Under Use these settings to manage your web add-in catalogs, uncheck both, Don't allow any web add-ins to start and Don't allow web add-ins from the Office Store to start.

Set a shorter duration for an active display. Select Start > Settings > System > Power & battery > Screen and sleep.For On battery power, turn off my screen after, pick a shorter duration. Open Power & sleep settings. Reduce your display’s brightness. Select Start > Settings > System > Display > Brightness .Clear the Change brightness automatically when lighting changes or the Help improve ...

详细了解 Windows 10 版本 1809 的更新，包括改进和修复、任何已知问题以及如何获取更新。

Here are a few different ways to find help for Windows. Search for help - Enter a question or keywords in the search box on the taskbar to find apps, files, settings, and get help from the web.

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.

An administrator might have customized the settings for your Temporary Internet Files folder to prevent you from changing the settings. For example, the administrator can remove the General tab from the interface in the Internet Options dialog box. If you cannot access the Internet Options dialog box or the General tab, contact your administrator for more information.

With Microsoft Forms, you can create an instant, real time poll in seconds in Microsoft Teams. Post a poll in your Teams channel or quickly gather feedback in a chat pane.

Important: We have removed the ability to share single pages of notes. Please read below for more information about this feature deprecation and other ways to share a page.. Sharing a link to a section of your notebook means people you have shared with will be able to see your entire notebook.