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 “Cannot start Microsoft Outlook. Cannot open the Outlook window” error messages? We can fix the problem for you, or you can use the troubleshooting steps we’re providing below to help resolve these startup issues. A corrupted profile, a damaged PST file, faulty add-ins, or improper Outlook startup settings often cause this issue. Should you decide to remove a profile, back up the data files first. All offline cached content will be deleted when you choose Remove.
To sum up, the blog elaborated on all the major reasons for Microsoft Outlook keeps crashing problem. Furthermore, we learned six manual solutions to fix this issue. So, for a worry-free and risk-free conversion, using the professional tool is the optimum choice.
If Outlook does not crash, this indicates that one or more Add-ins are to blame for the Outlook 365 crash. If this does not resolve the Outlook 365 crash issue, proceed to the next solution. Priyanka Kumari is a technical content writer in the fields of Email Migration, Data Recovery, Cloud Migration, and File Management.
See Change or update your email password for more information. If you’ve successfully sent and received email from classic Outlook before, and now Outlook repeatedly asks you to reenter your password, one of two things may have happened. You might need to set Windows Update to automatically download and install recommended updates.
If you do not see the files in the default locations above, you can use Outlook to identify the file location. Your Outlook Data File might be corrupted because of incompatible add-ons running in Outlook. Along with that, it will be helpful to keep your folder structure safe.
Then, select your account and click Open File Location. This tool has helped https://fixoutlookhelp.wordpress.com/2025/10/29/repair-outlook-ost-and-pst-files-2025-guide/ IT teams across healthcare, finance, education amongst many others. Whether it’s restoring email from encrypted backups or recovering badly broken PSTs, Stellar gets the job done with minimal fuss. Third-party add-ins are helpful… until they’re not. Outdated or conflicting ones can mess with Outlook’s core performance, causing unexpected slowdowns or outright failure to launch. The Classic Outlook Advanced Diagnostis troubleshooter generates a detailed classic Outlook configuration report.
After the restart, try opening Outlook again to see if the Outlook keeps shutting down issue is resolved. Launch the recovery assistant if you’ve tried everything else and Outlook is still crashing. It also allows you to upload your results to Microsoft for review by a support engineer. Perfectly repair and recover corrupted Outlook PST & OST files.
Name the https://fixoutlookhelp.wordpress.com/2025/10/29/repair-outlook-ost-and-pst-files-2025-guide/ new PST file, choose a save location, and click ‘OK’. After the repair, a ‘Repair Complete’ popup will appear; click ‘OK’ to finish. Convert recovered PST data to PST, EML, MSG, HTML, and other file formats.
A popular one to cross off is your own internet connection. While the above-stated methods occasionally make some difference, they are, however, adversely tainted by significant limitations. Hold the Ctrl key and drag-and-drop the items into the folder of the new PST file.
At the top of the message list, you can choose how you want to view the list. There might also be a visual alert that a message is unread, has an attachment, or is flagged. In the Search box, type the name or email address of a person or a keyword you want to search for, and press Enter or select . See Working with message folders in Outlook.com to learn more about available folders. To change your Mail settings so your inbox looks and behaves the way you want it to, see Personalize your new Mail experience in Outlook.com. https://fixoutlookhelp.wordpress.com/2025/10/29/repair-outlook-ost-and-pst-files-2025-guide/ Use the classic Outlook for Windows connectivity troubleshooter to troubleshoot Outlook connectivity issues.
The good news is that most “Outlook won’t open” errors can be resolved with a few proven troubleshooting steps. If the above steps, especially ScanPST.exe, fail to resolve the “Outlook won’t open” error, your Outlook data file is likely severely corrupted or extensively damaged. In such critical situations, a specialized and reliable professional tool like the Aryson Outlook PST Repair Tool becomes the best solution.
A vast community of Microsoft Office365 users that are working together to support the product and others. Then, each item in your calendar folder is checked for known problems that can cause unexpected behavior, such as meetings that seem to be missing. Find solutions to common problems or get help from a support agent. If Outlook is NOT able to start in safe mode, then try the next proposed solution below, entitled Create a new Outlook profile. https://fixoutlookhelp.wordpress.com/2025/10/29/repair-outlook-ost-and-pst-files-2025-guide/ Outlook may be running with settings meant for an older Windows version.
5) Wait for the program to detect the latest version of Outlook, and then follow the on-screen instructions to update your Outlook. Some programs running on the back of your computer may conflict with Outlook and cause Outlook to crash. To see if that’s the problem https://fixoutlookhelp.wordpress.com/2025/10/29/repair-outlook-ost-and-pst-files-2025-guide/ for you, restart your computer, and then reopen Outlook to see if it runs correctly. Test if Outlook is functioning correctly after disabling the add-ins. If not, it means still Outlook keeps crashing. Let us try another solution to get this issue fixed soon.