
Most of these crashes come down to one thing – problematic data files. When they get too large, go corrupt, or are poorly configured, things start to break. Customers with only a 3rd party email address set up as the username of their Microsoft Account will be asked to add a 1st party Microsoft alias to their account before accessing Outlook.com. Microsoft has its own tool for automatically scanning and correcting Office when things go awry. You can read about it and then run the Microsoft Support and Recovery Assistant to see if that helps.

This issue has been fixed for Outlook.com country domains. If you used the workaround below you can now switch from using an Outlook.com alias to your country's domain. The root cause has been isolated to a bug introduced in build 8962, which was partially reverted, and further mitigation efforts are ongoing.
Unable to add email addresses in Safari
We will ensure that all information is retained and only contacts with matching information in all fields will be cleaned up. To check if you have received the fix, review your contact list to confirm duplicates have been removed. To help you get rid of these duplicates, we have released a fix which will automatically clean up your contact list.
How do I repair my Microsoft Outlook?
Step 4: Repairing Microsoft OutlookClose Outlook & open your computer's Control Panel.Select "Programs" then "Programs and Features".Find Microsoft Office or Outlook & right-click on it. Choose "Change".A dialog box will appear with repair or uninstall options. ...Follow the prompts to complete the repair process.
Inbox empty or not loading [WORKAROUND]
If you manually type in the secondary connected account email address in the "From" field, the email is sent as "On behalf of" your primary Outlook.com account. If you typically use
Outlook calendar sync fix an Outlook.com account for email, this issue can occur if there are multiple aliases on the account and the 3rd party email address is the primary alias. This fix will also lead to a reduction in the total number of contacts on your contact list.
- Outdated or conflicting ones can mess with Outlook’s core performance, causing unexpected slowdowns or outright failure to launch.
- Corrupted or badly set-up Outlook profiles can often cause start-up problems.
- If there's an ongoing outage or maintenance, it will be displayed on the portal.
- Although it's not possible at the moment to turn the feature off entirely, you can choose to remove it from your favorites list by right clicking the folder and selecting Remove from Favorites.
- These features are fully compatible with Outlook.com and Hotmail accounts, and you can try them for free on any device.
- If so, wait a short time (usually two or three minutes) to see if Outlook starts working again.
- This alias will be added to their account as a secondary alias, with the original 3rd party alias will continue to be set up as the primary.
Troubleshooting Outlook Crashes
Visit Firefox support to learn how to Disable or remove Add-ons. Check that you have not accidentally blocked the Gmail domain when blocking one Gmail user. We will update this article as soon as we have more information on a fix.

After sending an email, users get a non-delivery report with an error
We're aware of an issue where some users see the error message "Your message can't be displayed right now". If you are having problems with Outlook, there are a few things we can help with to get you back to sending and receiving your email. A lot of times, a user will click on something by accident and change their view and be unsure of how to get it back. Sometimes, antivirus real-time scanning can slow Outlook down.
If you're having problems accessing Outlook.com, you can see the status of Microsoft Office Online Services at the Service Health portal.
She brings deep expertise built on years of focused work in the email space. Most Outlook problems can be resolved with proper troubleshooting and maintenance. Following the fixes above will help you keep your Outlook running smoothly and protect your productivity.
While built-in tools like ScanPST offer a basic Safety net, they often fall short when it comes to rectifying deeper file damage. In addition, you can export directly into Office 365 mailboxes after recovery with no middle step required. Using Cached Exchange Mode in complex environments can lead to painful sync delays. If a user has a large mailbox or lots of folder nesting, syncing might lag or even crash. Let’s look at what causes Outlook to crash, how you can fix it, and a smarter tool that takes a lot of the stress off your plate. It warns that once you pass certain limits such as the number of folders or messages, performance can nosedive.