Microsoft 365 for business portal
Sign in with your work or school account at https://www.office.com/signin
Sign in with your work or school account at https://login.partner.microsoftonline.cn
Sign in with your work or school account at https://portal.office.de
Microsoft 365 admin center
Sign in with your Microsoft 365 admin account at https://aka.ms/admincenter
Sign in with your Microsoft 365 admin account at https://portal.partner.microsoftonline.cn/AdminPortal
Sign in with your Microsoft 365 admin account at https://portal.office.de/adminportal
Note: Only Microsoft 365 admins can access the Microsoft 365 admin center. If you signed in to the Admin Center and get the message, "You don’t have permission to access this page or perform this action" then you aren't an Microsoft 365 admin.
Switch between accounts
If you're already signed in with one account, for example, you're signed in with a Microsoft account and you want to sign in with a work or school account instead, or vice versa, do the following:
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Sign out of the account you're signed in with, and then sign in with the new account. Or,
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Open a private browsing session in a new browser window. Search your web browser's help if you're not sure how to do this.
What if my password doesn't work or I still can’t sign in?
See I can't remember the account or password I use with Office and select the tab for your Office product.
See Also
Download and install or reinstall Microsoft 365 on your PC or Mac
