Install Microsoft 365 2019 or 2016 on a PC. Remember a one-time purchase version of Microsoft 365 is licensed for one install only. Depending on your browser, select Open file (in Edge or Internet Explorer), Setup (in Chrome), or Save File (in Firefox).

Open Authenticator, and then select > Add work or school account > Sign in. Select Sign in from another device. On the remote screen, open the Sign in to your account page and enter the code that you see in Authenticator. On your remote screen, sign in using your work or school account credentials.

The authenticator app will send a notification to your mobile device as a test. On your mobile device, select Approve. On your computer, add your mobile device phone number to the Step 3: In case you lose access to the mobile app area, and then select Next.

Microsoft Authenticator is a mobile app that helps you sign in to all your accounts without using a password. Notes: Microsoft Authenticator is not available for PC or Mac as authenticator apps are typically designed for smartphones for security reasons. Learn more.

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

选择 “Microsoft 365 应用” 开始安装。. 默认情况下会安装 64 位版本，除非 Microsoft 365 或 Office 检测到你已经安装了 32 位版本的 Microsoft 365 或 Office (或独立应用（如 Project 或 Visio ) ）。. 在这种情况下，将改为安装 32 位版本的 Microsoft 365 或 Office。. 若要从 32 位 ...

A Windows product key is a 25-character code used to activate Windows. It looks like this: PRODUCT KEY: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX. Locate your product key for Windows 10 or Windows 11.

Open Device Manager. Windows 10. In the search box on the taskbar, type device manager, then select Device Manager from the menu. Was this information helpful?

Go to www.office.com and if you're not already signed in, select Sign in. Note: If you're using Microsoft 365 operated by 21 Vianet, sign in with your work or school account to login.partner.microsoftonline.cn. If you're using Microsoft 365 Germany, sign in with your work or school account to portal.office.de.

Your Hotmail or Outlook.com password is the same as your Microsoft Account password. If you can you sign in but are having problems with Outlook.com, check the service status. If the status isn't green, wait until the service is running normally and try again.