Follow the on-screen instructions to update your Office apps. Then, launch your Outlook app, and it should open without problems. If your PC has a virus or malware infection, that may be why Outlook isn’t launching. In this case, run a full virus check on your PC to find and remove any threats.

The team is sweeping all remaining capacity to identify and address residual issues. While these Microsoft accounts work in other Microsoft products (e.g. OneDrive, Windows, Xbox), they are non-functional when visiting Outlook.com. Outlook.com (the web version of Outlook) and Outlook apps require a 1st party alias (Outlook/Hotmail/Live/MSN) to send and receive email, use calendar, etc.

We hope this guide proves useful in resolving your Outlook problems efficiently. Microsoft Outlook is one of the most widely used email clients globally, especially in professional and business environments. Outlook also comes with strong built-in security features, making it a reliable choice for managing communication and workflow. Outlook forwards meeting invitations to other attendees without anyone actually sending an update or forwarding an invite. This happens to accounts that are configured in the iOS Mail app. To access the calendar shared with your Microsoft 365 for business account, you’ll need to accept the invitation from Outlook on the web, iOS, or Android.

Out-of-date software and corrupted Outlook profiles are two of the most common issues that can prevent you from sending and receiving email. If you’re an admin with multiple users reporting problems, you also should check for service issues with Microsoft 365. This kind of error usually indicates some issues on the disk where your Outlook PST file is located. It can be caused due to improper installation of a program, corruption in the hard drive or registry file, etc. This has nothing to do with the email client