"We're having trouble signing you in" error when you try to access your mail in Office 365
Office 365 ProPlus is being renamed to Microsoft 365 Apps for enterprise. For more information about this change, read this blog post.
When you try to access mail for your organizational account in Office 365, you receive the following error message:
We're having trouble signing you in You're currently signed in with a Microsoft account as <>, but that account can't be used with Outlook Web App. Please sign out of your Microsoft account, then sign in to Outlook Web App with the account you use to read your organization's email. Click here to sign out. Learn more.
This issue may occur when you try to access your mailbox through https://www.outlook.com.
To access your mailbox, click the link to sign out, and then sign in to https://mail.office365.com.
Note If you still can't sign out, follow the steps in the following Microsoft Knowledge Base article:
2507767 Problems when signing out of Office 365, Azure, or Intune in a web browser
Still need help? Go to Microsoft Community.