This issue can disrupt your workflow and lead to data loss if not addressed promptly. Therefore, to help you out with this issue, here is a comprehensive guide with some effective troubleshooting solutions. However, often these situations lead to PST file corruption. For that, we have suggested a reliable PST Recovery Tool. Run the classic Outlook advanced diagnostic troubleshooter if you've tried all of the preceding steps and Outlook is still crashing or hanging.

Method 2: Microsoft Office 365 Reinstallation

What is the reason for crash Outlook?

It will resolve the Microsoft Outlook crashing issue to some extent. Follow the given ways along with their steps to fix the error and access your files. Try steps 1 through 3 in order until the issue is cleared. If you go through all of those steps and Outlook is still crashing or not responding, complete step 4 before contacting the Microsoft Community for further help. Is the classic Outlook email client crashing when you create or open a new email? If so, Microsoft suggests creating a new FORMS2 folder to outdoor signs for business fix the problem.

Create a new Outlook profile

Additionally, you can try the free trial tool to learn all about its functionalities and workings as well. Nevertheless, you cannot save the recovered data when using the demo tool. For that, purchase the premium version of the software. Running the latest version of Outlook ensures you have the most recent fixes and updates. An outdated version can also be a cause of why Outlook keeps crashing unexpectedly.

Investigate possible issues caused by add-ins

It looks like Microsoft has acknowledged this issue within the M365 Portal (Issue ID MO978220). Generally, many programs and applications run simultaneously or in the background which can cause interruptions. Therefore, first, restart your system, and second, check the internet connection. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. To narrow it down, enable each add-in one by one, restarting Outlook after enabling each add-in.

Outlook Intermittently Crashing After 2025-04 Updates

They still wonder ‘Why is Outlook constantly not responding? ’ So, it is possible that your PST file will get corrupted and you can lose all important data. Or, if the problem is itself due to oversized PST getting corrupt, you need to recover PST data as soon as possible. At the time of writing, Microsoft is still investigating the issue. Until a permanent solution is found, they’ve released a temporary workaround to address the problem. Since the issue is related to the Forms Library, Microsoft has suggested that affected users create a new FORMS2 folder.

Nevertheless, you cannot save the recovered data when using the demo tool.They still wonder ‘Why is Outlook constantly not responding?MS was not offering any workarounds, except for wait… I will keep settings like this to avoid future issues too.For that, purchase the premium version of the software.Obviously update the client edition and product ID to match your environment but this worked.Perhaps we can start with the crash error, check the event logs for clues.This step creates detailed information about your Outlook configuration and provides solutions for any known issues that are detected.

Outlook Crashing While Opening or Creating an Email? Here's a Fix

I suspect it’s an update that came down recently but I have no idea which one. You could try just removing all the April Office patches in Windows Update. It is possible it’s a patch doing this, a plugin or extension or something else, but without an error or log entry, it’s hard to tell. Scope of impactImpact is specific to some users who are served through the affected infrastructure. Obviously update the client edition and product ID to match your environment but this worked. Has anyone seen this as well with this months updates.

On one server I uninstalled all of the recent security patches and rebooted, but no change. 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. For instance, back in April this year, the download for the classic Outlook app broke, as users were unable to download the classic Outlook app in any language other than English. Once the repair process is complete, restart your device and check if the issue is resolved.

According to Microsoft, the problem is occurring because Outlook is unable to open the Forms Library. The support document also notes that, while the problem affects Outlook on all Microsoft 365 official channels, it is most common on virtual desktop infrastructures. Now, let us move into the solutions to fix the issue of MS Outlook. Has anyone seen this same thing happening, but with not just Outlook, in Office 365?