If you can't find a file on your computer or you accidently modified or deleted a file, you can restore it from a backup (if you're using Windows backup) or you can try to restore it from a previous version.Previous versions are copies of files and folders that Windows automatically saves as part of a restore point.

在投影的电脑上，选择 “Windows 徽标键 + K ”，然后选择要连接到的电脑。 或者，可以在 Windows 搜索栏中搜索 “强制转换 ”，然后选择“ 连接到无线显示器”。在“显示设置”页上的“ 多个显示器”下，选择“ 连接到无线显示器”，然后选择“ 连接”。

After you update a drop-down list, make sure it works the way you want. For example, check to see how to Change the column width and row height to show your updated entries. If the list of entries for your drop-down list is on another worksheet and you want to prevent users from seeing it or making changes, consider hiding and protecting that worksheet.

1. Sign in with your Microsoft account. You will be prompted to Sign in with Microsoft account. If you have an existing Microsoft account on your mobile device then you will be asked to confirm your account, then click Continue.. If you don't have an existing Microsoft account on your mobile device then you will be asked to sign into your account or create a new one, then click Continue.

Show the Developer tab. If the developer tab isn't displayed in the ribbon, see Show the Developer tab.. Open a template or use a blank document. To create a form in Word that others can fill out, start with a template or document and add content controls.

There are different ways to remove apps and programs, so if you can't find the one you're looking for, you can try another location. Note that some apps and programs are built into Windows and can't be uninstalled.

In the Step 1: Select condition(s) list, select the check boxes for any options that you want, and then click Next.. If you do not select any check boxes, a confirmation dialog box appears. If you click Yes, the rule that you are creating is applied to all messages that you send.

Many tasks for Office products don't require a product key because your Microsoft account takes care of them instead.

Download our Formulas tutorial workbook. We've put together a Get started with Formulas workbook that you can download. If you’re new to Excel, or even if you have some experience with it, you can walk through Excel’s most common formulas in this tour.

Internet Explorer 11 support ended on June 15, 2022. If any site you visit needs Internet Explorer 11, you can open it with Internet Explorer mode in Microsoft Edge.