Add-ins are extensions that you can install to enhance Outlook’s functionality and unlock additional features, like CRM integration. But these add-ins can sometimes result in compatibility issues, especially if they’re not up-to-date or poorly coded. A conflicting add-in might cause Outlook to freeze, crash, or not open at all.

In this guide, we will learn how to repair Outlook 365 in Windows 10/11 with the best possible ways. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.

If you decide you don't want the calendar you created, right-click the calendar and select Remove. Each message also has a mini toolbar when you open the message in a new window. For each message, you can delete it, mark it as unread, flag the message, or pin it to keep it at the top of your folder. To show or hide the Folders list, select Show or Hide the navigation pane. Find solutions to common problems or get help from a support agent.

If any of these components are missing or corrupted during installation, Outlook may fail to open or could crash unexpectedly. Maybe you've added a new program to your computer that doesn't get along with Outlook, or your system has a virus. Regardless ways to fix Outlook data file errors of the specific cause, there are several key troubleshooting fixes to try that might help. If it starts without any problems, you can check the add-ins. Moreover, it will help you to get the answer to which add-in is causing the issue.

I couldn’t find ways to fix Outlook data file errors anything in the Event Viewer that points to the root cause, nor could I find any similar issues online. However, if you encountered other issues like Outlook not responding, learn how to fix Outlook not responding here. Once you have made these changes in your PST file, Outlook should open without encountering any more problems. Click the above link to have a quick download, then you can have Outlook errors fixed within minutes. If you do everything properly, Outlook will open when you use the new profile.

Trouble shooter came back as there was a problem running the trouble shooter, try looking for other solutions. When Outlook does open, it will send mail fine one minute and then the next minute it will not send any mail. I agree, it is highly unlikely that all the users would suddenly have an issue that isn’t patch related. Outlook opening problems are simple to deal with.

Before making changes, make sure to save your Outlook stuff to keep it safe. If Outlook still doesn’t open after trying these fixes, you might need more help. Asking IT experts or Microsoft’s support team could give you the best solution for the Outlook problem you’re facing. If you can't open Outlook, or Outlook disappears or crashes, one of your add-ins may be to blame or you may need to update Outlook. Find solutions to common problems or get help from a support agent. With the window with the Windows Update, you will see all the updates you need to make for your Microsoft Office.

Not something you want to take on lightly, but sometimes you have to. Similar to our earlier suggestion of repairing Office (see #3 Repair Your Microsoft Office above), perform the same steps except choose to Uninstall. Be aware that you may need your product key if you received one.

Solutions to Troubleshoot 'Out of Memory or System Resources' ErrorCheck Resource Usage. ...Restart and Update Outlook. ...Optimize System Resources for Outlook. ...Find and Remove Faulty Add-ins from Outlook. ...Increase the Size of the Memory Heap. ...Rebuild the OST File.Apr 7, 2025

How to Repair Outlook 2019-2016Select 'Start' menu and go to 'Control Panel'Click on 'Programs' and then select 'Programs & Features'Find and select 'Microsoft Office 2016' from the enlisted programs.Click on 'Change' option.Next, click on 'Quick Repair' or 'Online Repair' and follow instructions.Jan 13, 2025

For more information, see Introduction to Outlook Data Files (.pst and .ost). You can determine if it's corrupted by creating a new profile and changing which profile is used when Outlook ways to fix Outlook data file errors starts. If Outlook is NOT able to start in safe mode, then try the next proposed solution below, entitled Create a new Outlook profile. Starting Outlook in safe mode, which starts Outlook without add-ins loaded, can tell you if an add-in is the source of the problem. If you are trapped in a similar situation that my Outlook is not opening, you may feel disturbed about the problem. In the following post, you will find out solutions for the common Outlook not opening problems bonus tips to prevent the problem from happening again.

No matter how well written add-ins are (and even Outlook itself), there will always be the occasional Outlook problem that doesn’t seem to go away or may not be related to add-ins at all. You can read how to fix your Outlook problem on the internet, but sometimes the suggestions don’t work for your specific case. So, we have produced this list of general things to try to resolve your problem in Outlook. Read on to find out how to fix common Outlook problems below. The maximum number of distribution ways to fix Outlook data file errors group members is 100,000 members, and the recipient rate limit is 10,000 recipients per day.