Outlook Error 0x80040600 – Fix Outlook Unknown Error in 2007/2010/2013/2016

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Have you ever encounter the error message “An unknown error has occurred 0x80040600” while working on MS Outlook? The Outlook error 0x80040600 generally occurs due to corrupt or damaged PST file. When you get this unknown error, it restricts you from accessing your crucial data such as emails, attachments, drafts, notes, appointments, contacts, calendars, etc. Therefore, to overcome to such issue, one needs to fix it as early as possible. Here in this article, we are going to highlights a few essential steps to fix the error 0x80040600 in Outlook 2007, 2010, 2013, and 2016.

Primary reasons for the occurrence of Error 0x80040600

Below are the causes that lead to Outlook unknown error 0x80040600:

  • Over-sized Outlook PST file
  • Virus or malicious attack
  • Power failure
  • Due to disk damage
  • Abrupt termination of Outlook program

However, an oversized PST file is one of the most primary reasons for the occurrence of this error. Every Outlook version has its own storage limit. When a user exceeds that particular storage limit, it displays an error 0x80040600, which means the user cannot access outlook data files.

How to Fix Outlook Error 0x80040600?

Outlook 0x80040600 error occurs due to corrupt Outlook data files. Hence, to fix this issue, one needs to repair the Outlook data (PST) file. You can run a ScanPST.exe utility to repair Outlook PST files. It is a built-in utility which is provided by Microsoft. To know how to fix Outlook unknown 0x80040600 error let’s delve into the below-mentioned steps:

Step 1: Find the default PST file that you want to repair

  • Go to Control Panel, click on Mail option.
  • Here, choose the Outlook profile that you want to repair by clicking on Show Profiles option.

show profile

  • Then, click on Properties.


  • Finally, click on Data Files to get the location of default PST file.

data files

  • Note the location of PST file.

data files

Step 2: Run Inbox Repair tool (ScanPST.exe) to repair Outlook PST file

Essential Note: Make sure MS Outlook should be closed in order to run the ScanPST.exe utility.

  • Run Scanpst.exe (Inbox Repair tool).
  • Click on the Browse button to locate the PST file that you want to repair.
  • Now, click on the Scan button to begin the recovery process.
  • Once the recovery process gets done, you will get a popup message, asking to create a backup.
  • Finally, click OK and continue.

Advantages of Scanpst.exe

Inbox Repair tool is a free built-in utility offered by Microsoft. You don’t need to pay even a single penny for it.

Disadvantages of Scanpst.exe

  • Time taking and complex task
  • Repairs only if the corruption level is minor
  • Requires strong technical knowledge

If the above-mentioned method doesn’t fix outlook issues, you can choose the below solution to repair the corrupt PST file.

An alternate solution to repair PST file

Sometimes, the above-mentioned method could be handy to fix Outlook unknown errors. However, if you’re still encountering the same issue, you can opt for a professional PST Repair tool. It is a one-stop solution to fix or repair corrupt Outlook PST file. It is capable to recover all the data items such as emails, drafts, notes, calendars, contacts, drafts, lists, attachments, etc. The software incorporates a simple and easy-to-use interface. Any non-technical user can easily operate this tool without taking any technical assistance.



By using the above-suggested solutions, you can easily fix Outlook error 0x80040600 and re-access your essential Outlook data (PST) files.


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