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Errors Have Been Detected in Outlook OST File ! How to Fix?

Published By Nilesh Kumar
Debasish Pramanik
Approved By Debasish Pramanik
Published On January 15th, 2024
Reading Time 3 Minutes Reading

In today scenario, Microsoft Outlook is widely used by millions of customers in conjunction of Exchange Server. When Outlook is used in conjunction of Exchange Server, it creates an offline data file OST. Working offline is a very good facility offered by Microsoft Outlook as one can continue with their work even in downtime of Exchange Server. Once the connection is re-established, Exchange Server synchronizes with Outlook and OST file gets updated. In this write up, we will illustrate some of the reasons because of which errors have been detected in Outlook OST file or OST file creates issues while synchronizing. Take a look !

Know About Common Errors Detected in Outlook OST File

  • Outlook Error 0x8004060C
  • Error code 0x8004103b
  • MS Outlook Error 0×8004010F
  • OST error code (error code=00000003)
  • Error 8004011D-526-80040115-0
  • Outlook Error 0×80042108 and error code c5e20916-9359-43fc-9bd9

The above-mentioned errors are the lists of error which have been detected in Outlook OST file and affect our crucial work. Before discussing about, solutions to fix such types of error, you need to know probable causes to fix such types of issues.

  • Hardware Failures : If there any problem exist in hard drive sector in which the OST file is stored, it might harm the integrity of OST file. Sometimes issues in routers, wires, cables, etc create hurdles while synchronizing OST file.

  • Software Failures: Sometimes current registry leads to OST corruption. Some Anti-spam add-in installed in Outlook that conflicts with your Outlook application. Sometimes OST file gets affected with virus infection.

What to do, when errors have been detected in Outlook OST file?

You can use different fixtures to fix errors of OST file. Creation of new Outlook profile is the primary step if error detected in offline OST file.

Create a new Outlook profile

Before creating a new Outlook profile; you should delete the current Outlook profile and set the newly created profile as default profile.

a. Go through > Microsoft Windows > Start > Control Panel

b. Hit on the user account and then click Mail( The Mail Set up screen will appear only if Outlook is installed.)

c. In Mail Set up screen, choose & click the “show profile” tab

Mail Setup

Click Add.

A “New Profile” screen will appear and you will type your new profile name.

New Profile

You will add e-mail account to use in your profile.

If you are unable to resolve the issue by creating new outlook profile, the only option you might be left with is repairing OST file or convert OST file to PST file format using some third party OST File Conversion software.

Choose a Third Party Solution to Fix Errors of OST File:

Although, Microsoft suggest OST Integrity Check tool and Inbox Repair Tool to fix and repair corrupted OST file but these utilities get fail when OST file having major corruption issues. These manual solutions do not turn out to be very useful as they may end up in deleting data from the OST file. As per my personal experience, OST Conversion tool of EmailDoctor is the better option for recovery of data from damaged OST file. Tool is the standalone solution to fix any types of errors while accessing OST file.


Errors detected in the Outlook data file creates a hurdle in work continuity. It’s wise to choose OST Repair software to repair corrupted OST file and fix different errors of OST file.


By Nilesh Kumar

As a Chief Technical Writer, I know the technical issues faced by home and professional users. So, I decided to share all my knowledge via this blog. I love to help you with challenges while dealing with technical jargon.