If you can't sign into your Microsoft account, most issues can be identified by our sign-in helper tool. The tool will ask you to enter the email address or mobile phone number you're trying to sign in with and check the details you provide.

Download and install the My Apps Secure Sign-in Extension. Download and install the My Apps Secure Sign-in Extension, if you're prompted. This extension helps you use your desktop browser to use single sign-on with your organization's cloud apps.

Tip: If you've clicked a link to one of our articles, you may need to select the back arrow in the Help pane to see the Still need help? option.

Scan the page and save it on your computer in a common file format: .bmp, .jpg, or .png. For information on how to use your scanner, use the manufacturer’s manual or Web site.

如何在 Excel 中将两个或多个单元格中的文本或数据合并为一个单元格。

To Insert this. Say this ' 撇 號 . 上 標 點 . 略 縮 號 -減 號 . 連 字 號 ！ 感 歎 號 . 驚 嘆 號 # 井 字 號 $ 美 元 符 號 % 百 分 號

Method. Used for. Authenticator app. Two-factor verification and password reset authentication. Text messages. Two-factor verification and password reset authentication.

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

Note for iPhone: If you are having trouble with your iPhone import, make sure your device is unlocked and you’ve accepted the permissions. Note for Android and other devices: If you’re using an Android phone or other device and import isn’t working, you might need to change your phone’s USB settings from Charging over USB to Transfer Files or Transfer Photos.

Cross-device copy and paste (for Surface Duo and select Samsung and HONOR and OPPO and ASUS devices) Let emailing yourself photos and files be a thing of the past — now you can just copy and paste or drag and drop content between your Android device and your PC.