Troubleshoot Outlook for Windows issues

We also released a new rule that corrected the wrong campaign verdict for all impacted customers during the incident. If you’re a Microsoft 365 user, then you can download and install the Microsoft Support and Recovery Assistant. Then you just need to run the application, and it will diagnose and fix any issues with your Outlook profile automatically. To check the server status, visit the Office 365 Service Health portal. There, you can see the current status of all Microsoft services, including Outlook.

Fixes or workarounds for recent issues on Outlook.com

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. You may see one of the following errors in a pop-up message on your screen. 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.

Unable to add email addresses in Safari

This creates crashes that seem random—until you dig into the hardware logs. Outlook slows down, crashes randomly, or fails to load entirely. Users often turn to Microsoft’s ScanPST tool, but it struggles with large files and doesn’t always finish the job.

Start classic Outlook in safe mode

If you typically use 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. 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.

II. Remove and Reconnect Microsoft Accounts

It can automatically diagnose issues, troubleshoot, and fix problems with Outlook. Note that the above link is for desktop Outlook for Windows. A more general version that can also fix Office, Microsoft 365, and other Outlook problems can be found here. 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.

Solution 5: Check Your Spam Folder

Conflicting rules can prevent certain rules from working as intended. Review your rules to identify any conflicts and resolve them by disabling or adjusting overlapping rules. Currently, you can’t use Outlook on Windows to edit calendars that are shared with your Outlook.com account, even if you’ve reconnected your Outlook.com account to Outlook. We’re working to make it possible to edit shared calendars in Outlook 2016 for Windows.

• Many businesses depend on it to keep their operations running, and having it break is a nightmare that usually ends up costing lots of money and causing a lot of frustration.
• Not something you want to take on lightly, but sometimes you have to.
• If you access your Outlook.com account through the iOS Mail app, you may be repeatedly asked to enter your username and password.
• Check the status bar at the bottom of the screen to see if another process is running.
• Fortunately, with the right Outlook troubleshooting strategies, many of the most common Outlook problems are quite straightforward to troubleshoot.
• 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.
• To edit a shared calendar, go online to your own Outlook.com calendar, open Calendar for Windows 10, or use a mobile device.

Following the fixes above will help you keep your Outlook running smoothly and protect your productivity. We hope this guide proves useful in resolving your Outlook problems efficiently. If Outlook shows an error like “Cannot open attachments”, this could be due to unsupported file formats, outdated Outlook versions, corrupted attachments, or security restrictions. If you are having issues sending email, this might be due to validation issues with your Microsoft Account.

Some users may not be able to see the left folder pane. While we fix the problem, you can send the file as a OneDrive link. Save the repaired file to PST, MSG, EML, PDF, HTML or export directly to Office 365. Outdated or conflicting ones can mess with Outlook’s core performance, causing unexpected slowdowns or outright failure to launch.

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. 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. If you’re having problems accessing Outlook.com, you can see the status of Microsoft Office Online Services at the Service Health portal.

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Here’s how to disable add-ins in Outlook even when it keeps crashing. However, like any software, Outlook isn’t immune to issues. When you try to accept a shared Outlook.com calendar using your Microsoft 365 for Microsoft Office repair solutions business account in Outlook 2016, you might receive the “Something went wrong” error or your sign-in might fail. To edit a shared calendar, go online to your own Outlook.com calendar, open Calendar for Windows 10, or use a mobile device.