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  • trusted-outlook-repair-blog2005
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Opened Jan 20, 2026 by Jonas Shuman@jonasshuman614
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unable to start outlook in safe mode or normal mode! It keeps crashing Collaboration

This can be exploited by creating a file together with an OLE object in such a way to cause MAPI to load a DLL from a network share when the OLE object is activated. 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 occurs because custom form script restore Outlook functionality is now disabled by default.

If you can send email while Outlook is in safe mode, creating a new Outlook email profile should allow you to send email again. Should you decide to remove a profile, back up the data files first. All offline cached content will be deleted when you choose Remove. For more information, see Introduction to Outlook Data Files (.pst and .ost).

As we have explained, 11 techniques to fix Outlook are having trouble starting, how about starting with essentials only. As manual approaches have no assurance and also possibility of data loss. So, we recommend you to opt Expert Recommended Approach as it is specially known for faster results and no risk of losing any data. If it is not solved by performing the given solutions then your OST files get corrupted. In this situation, we recommend you to opt BitRecover OST to PST restore Outlook functionality Converter as this software can easily convert individual or batch OST files. It also helps to restore and convert damaged, corrupted, dismounted and oversize OST files without facing any limitations.

To get support in Outlook.com, click here or select Help on the menu bar and enter your query. If the self-help doesn't solve your problem, scroll down to Still need help? Some customers may not be able to see their Profile, Account or Sign Out options when selecting their picture on the top toolbar. None of the events or information was lost in the move to the new calendar. The Family group calendar now appears in the Outlook.com groups area in the left nav on Outlook web and in the groups area of the Outlook mobile app. Some Safari users are unable to add email addresses in the To section, or cannot point the cursor in the To field.

We have gone through many steps with Microsoft Support until they could help no further. We have tried to trouble shoot and done a system restore but there was no restore point restore Outlook functionality and a startup repair and nothing worked. When we performed a startup repair this is the message we received. Outlook stores all your email messages, meetings and events, contacts, and tasks in data files.

We have multiple tools to help you automatically diagnose an issue, troubleshoot, and fix problems with Outlook. If Startup Repair detects any of these issues, it will attempt to fix them automatically. If it cannot fix the problem, it will provide a detailed report of the issues it found.

The usual fixes like resetting credentials, reinstalling Office, and clearing cached profiles had no effect. Our goal is to give you the answers to fix the most common issues Outlook users face. Bookmark this page so that whenever you come across an error like your Outlook calendar not syncing, restore Outlook functionality or a corrupted file, you'll have a place to start troubleshooting. In case your Outlook PST is corrupt or damaged, you can always look for third-party Outlook PST Repair Tool to fix the issue. Inbox Repair Tool or ScanPST.exe is a free utility provided by Microsoft.

Most times, this is caused by a corrupted search index, which you can rebuild. Keep in mind this does take a while, and it’s usually best done after the user has left for the day. Sometimes you’ll open Outlook and then for no apparent reason, it will freeze or shut itself down. There are quite a few different causes for this, but one of the most common is a defective add-in. Here’s how to disable add-ins in Outlook even when it keeps crashing.

This issue has been mitigated and we are continuing to monitor the issue to ensure stability. The root cause was the deployment of an incorrect campaign data file, which led to false positive campaign detection. We have since reverted to the right data file and the outbound email flow has returned to a normal state. We also released a new rule that corrected the wrong campaign verdict for all impacted customers during the incident.

Corrupted or broken files in Microsoft Office or Microsoft 365 can cause serious performance issues. Use the repair your office option in Control Panel to get back on track. A virus or antivirus software issue can wreak havoc on your system, and Outlook won’t escape unscathed. Run a scan using reliable antivirus tools. Outlook constantly Not Responding if the Outlook data files contain errors.

Wondering how to fix the Outlook Crashes During Startup error? Don’t worry, in this article we have explained 6 useful methods which will help you to fix this issue. Also, find out how you can repair your corrupted 0utlook data file using effective software like Remo Repair Outlook. If none of the above solutions help you resolve the Outlook crashing error, it means that your Outlook data file has been corrupted. This is caused when the program tries to access the storage file but fails to do so. However, frequent Outlook crashes also result in corruption making your Outlook inaccessible.

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Reference: jonasshuman614/trusted-outlook-repair-blog2005#3