This section introduces solutions that you can use when Outlook 2016 or Outlook 2013 is not opening. If none of the above steps step-by-step Outlook troubleshooting work, the issue may be more complex or related to server-side problems that only Microsoft can resolve. Try these troubleshooting steps in the order presented here, from simple to more complicated.

A damaged or corrupted Outlook user profile is a common reason for "Outlook won’t open" errors. Creating a fresh profile can provide a clean slate for Outlook to start. Outlook stores all your email messages, meetings and events, contacts, and tasks in data files. You can run the Inbox Repair Tool (scanpst.exe) to scan your Outlook data files and repair errors. Are you having trouble starting Outlook or receiving step-by-step Outlook troubleshooting "Cannot start Microsoft Outlook. Cannot open the Outlook window" error messages?

Updating your Outlook may conveniently solve the issues you're experiencing. All you need to do is to check and install any updates for the app. Existing Hotmail accounts have been permitted step-by-step Outlook troubleshooting to keep their email addresses as well. You can still create a new email address with @hotmail.com as the domain name. If Microsoft Outlook is not working, we might be able to help you pinpoint why.

The upcoming section will discuss the step-by-step Outlook troubleshooting reasons in detail. I'm having an issue with one Outlook 365, the program open and get stuck at loading the user profile, any profiles. Your user profile is a collection of settings that let you customize the computer appearance and performance. It contains settings for desktop backgrounds, screen savers, sound settings, and other features.

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.

Uninstalling this part of your virus scanner is strongly advised