Microsoft Outlook Inbox Repair Tool not Responding

Microsoft Outlook is a widely encounter the Inbox Repair Tool not responding and constantly crashing issue. This can be frustrating, especially when you rely on Outlook for your daily communication needs. Although the purpose of Inbox repair tool is to fix any type of error in Outlook, but at times the tool itself throws up fatal error, which might lead to the permanent data loss.

In this blog post, we’ll explore the reasons behind this problem and provide step-by-step solutions to help you get your Outlook back on track. Before diving into solutions, it’s crucial to understand why the Inbox Repair Tool (Scanpst.exe) might be misbehaving and why the repair tool crashes while fixing the Outlook problem.

Understanding the Issue: Why Inbox Repair Tool Crashes?

The tool is designed to repair corrupted Outlook data files (PST and OST) by scanning and fixing errors. Several factors can contribute to its unresponsiveness or frequent crashes:

  • Large Data Files: If your Outlook data files are excessively large, the Inbox Repair Tool may struggle to process the extensive amount of data, leading to crashes.
  • Corrupted Outlook Profile: A corrupted Outlook profile can interfere with the proper functioning of the Inbox Repair Tool, causing it to become unresponsive.
  • Conflicts with Antivirus Software: Some antivirus programs can conflict with Outlook’s processes, hindering the functionality of the Inbox Repair Tool.
  • Outdated or Corrupted Outlook Installation: An outdated or corrupted installation of Microsoft Outlook may impact the performance of the Inbox Repair Tool.

How Fix the Inbox Repair Tool not Responding Issue?

Now that we have an understanding of the potential causes, let’s explore solutions to address the issue:

  • Reduce File Size: Start by reducing the size of your Outlook data files. You can achieve this by archiving old emails or deleting unnecessary items. This will make it easier for the Inbox Repair Tool to handle the data. You can also compact Outlook data file size to fix the issue.
  • Create a New Outlook Profile: If your current Outlook profile is corrupt, simply create a new Outlook profile. Doing this might resolve the issue completely. Go to the Control Panel, open the Mail app, and create a new profile. Then, configure Outlook to use the new profile.
  • Temporarily Disable Antivirus Software: Temporarily disable your antivirus software and check if the Inbox Repair Tool functions properly. If it does, there may be a conflict with your antivirus program. Consider updating the antivirus software or configuring it to work seamlessly with Outlook.
  • Repair or Reinstall Outlook: Use the Office Repair tool to repair your Outlook installation. If the problem persists, uninstall and reinstall Microsoft Office. Ensure you have a backup of your Outlook data before taking this step.
  • Use Alternative Repair Tools: If the Inbox Repair tool continues to be unresponsive, consider using third-party PST repair tools. There are several reliable options available that can effectively repair and recover Outlook data files.

You can also backup your Outlook data by converting them to a reliable format; like MBOX, EML, MSG, HTML or PDF by using Magus Tools. There is a solution to export PST file to MBOX format; so that you can switch to Thunderbird; in case the Outlook fails. On the other hand, you can convert OST to PST in case the OST file becomes inaccessible.


Dealing with a misbehaving Inbox Repair Tool in Microsoft Outlook can be challenging, but with the right troubleshooting steps, you can overcome the issue. By addressing factors such as file size, profile corruption, antivirus conflicts, and software integrity, you can restore the functionality of the Inbox Repair Tool and keep your Outlook running smoothly. If all else fails, don’t hesitate to seek assistance from Microsoft support or consider using professional PST repair tools to recover your Outlook data.

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