Outlook OST Cannot Be Opened Error

How to Fix Outlook OST Cannot Be Opened Error?

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OST file is very useful for eliminating the problem of network connectivity because this file format allows the users to work in offline mode. But sometimes the OST file has to suffer from the Outlook OST cannot be opened error. This indicates that the user is not able to access the OST file in Outlook 2016 version.

In this Blog Post, we will cover the reasons behind the errors and their solution to fix the error OST file cannot be opened.

Most Common Outlook OST File Errors in Outlook

According to research, it is found that the OST file cannot be opened is the most common error. But there is also many errors so here is the list of common OST file errors:-

  • Outlook not able to start
  • .OST file is being used by another program
  • No response by Microsoft Outlook
  • Default Outlook OST file is in use and cannot be accessed

SysInspire OST to PST Converter

  • Try out this SysInspire OST to PST Converter software that allows users to resolve any error related to the OST file in a few steps.
  • You can also get the trial version of the software to know about the functionality.

Solution of Related Queries:-

Reasons behind getting Outlook OST cannot be opened Error

Following are the most common reasons that make the OST file inaccessible for the user:-

  • Problem while Sysnchorization of OST file with the Exchange server can increase OST file errors
  • Sudden failure in the power supply while working on the OST file
  • The entry of Virus in your OST file can be the reasons for the Corrupt OST file
  • Not properly installed MS Outlook application
  • An immediate shutdown of the Outlook application can be the reason for OST file corruption

To fix errors in OST file you can use SysInspire OST to PST Converter software. This software is reliable and easy to use also it comes with multiple advanced features such as:-

Features of OST to PST Converter

  • No need to install MS Outlook for making the OST to PST recovery
  • Maintains the folder hierarchy while making conversion of OST file
  • Advanced scanning feature to fix any type of error from the OST file
  • Restore every type of OST email contents
  • No limitation of the size it can recover unlimited mailbox elements

Remove OST cannot be opened error using Software

  • In the first download the SysInspire OST to PST Converter software and open it
  • Select the OST file from the left top corner
export ost to pst
  • After selecting the OST file it starts scanning the file to fix Outlook OST file errors
export ost file to pst
  • Select the required mailbox items according to your need
Fix Outlook OST cannot be opened error
  • Just select the conversion format of the OST file in which you want to convert as shown below
ost recovery
  • After that it give the message showing the process get completed
OST to PST Conversion completed


In last we can say that the most reliable solution to fix “Outlook OST Cannot Be Opened Error” by using SysInspire OST to PST Converter software. Also, this software is 100% virus-free and any skilled or non-skilled person can run this software. You can also try out the demo version of the software.

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