


Install the latest version of Outlook through your Email & Office Dashboard.Read how to uninstall Office on a PC or how to uninstall Office on a Mac for additional info. If you have an older version of Outlook, uninstall the outdated version.If you're having trouble signing in to your Outlook account, check what version of Outlook you've installed on your desktop.Check if you have the latest version of Outlook Note: In the meantime, you can sign in to Office online or Outlook on the web. If you have a different plan type, see this article for help signing in.

If you purchased a Microsoft 365 Business Professional plan or greater and can’t sign in to your Outlook desktop app, try the following solutions. I can't sign in to my Outlook desktop app
