Windows Security provides built-in security options to help protect your device from malicious software attacks. To access the features described below, tap the Windows Start button, type windows security, select it from the results, and then select Device security.

Note: Use these steps for Windows programs.If you're having problems with an app you got from Microsoft Store, go to Fix problems with apps from Microsoft Store.

Blur. Select the Blur option, then use the slider to adjust the Blur intensity, then select Apply to blur the background.. Remove. Select the Remove option, then select Apply to remove the image background.. Replace. Select the Replace option, then use the color palette to select the background color. Alternatively, you can specify the RGB values for the desired color.

Press the Start button on the taskbar, type settings, and then select Settings.; On Windows 10, select Update & Security.On Windows 11, select Windows Update.; On the Windows Update page, select Check for updates to see if any updates are available for your device.; Once the updates have downloaded, select Install now to start the installation.; Following installation, we recommend that you ...

宏和 vba 工具位于“开发工具”选项卡上，由于该选项卡默认是隐藏的，因此第一步是启用选项卡。有关详细信息，请参阅显示“开发工具”选项卡。. 接下来，创建宏。 我们将录制一个不执行任何作用的宏，但将创建个人宏工作簿。

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.

常规格式是 Excel 在键入数字时应用的默认数字格式。大多数情况下，使用 “常规 ”格式设置格式的数字的显示方式与键入方式一样。 但是，如果单元格的宽度不足以显示整个数字， 则“常规 ”格式将舍入具有小数的数字。“常规”数字格式还对较大的数字（12 位或更多）使用科学计数（指数 ...

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.

Under Adjust your photo, select Choose a file > Browse files to select an existing photo. Or, if your device has a camera, select Take a photo > Open camera and take a new photo

注意: 由于 Excel 将尝试打开备用启动文件夹中的所有文件，因此请确保指定仅包含 Excel 可打开的文件的文件夹。 如果同名的工作簿同时位于 XLSTART 文件夹和备用启动文件夹中，则 XLSTART 文件夹中的文件将打开。