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Cannot Access OST File in Outlook 2019, 2016, 2013, 2010 – Fix & Repair Error

Published By Deepa Pandey
Anuraag Singh
Approved By Anuraag Singh
Published On August 7th, 2020
Reading Time 6 Minutes Reading
Category Mailbox Recovery

Learn How to Fix – Cannot Access OST File in Outlook 2019 / 2016 / 2013 / 2010 / 2007

OST file or Offline Storage Table is generally an offline folder file in the Microsoft Outlook application. Its main purpose is to permit users to work even in an offline mode if the Outlook application gets disconnected from the Microsoft Exchange server. However, sometimes OST files behave inappropriately like file becomes inaccessible, corruption or synchronization problems with Exchange Server. All of this can happen due to many possible reasons. For example, a user account is deleted accidentally from the Exchange Server, any type of virus attack, sudden power failure, abnormal termination of MS Outlook. Due to all such reasons, users encounter some error messages like cannot access OST file in Outlook 2019/ 2016/ 2013/ 2010/ 2007. As the main reason behind these errors is corruption in OST file. Therefore, we have discussed various methods fix cannot access OST file in Outlook.

Quick Solution: In order to fix  OST File Not Accessible in any version of MS Outlook, a user can use OST to PST  Converter Software. The software will provide extract complete data from the damaged .ost file and provide you a healthy .pst file. Which further can be imported into Microsoft Outlook 2019, 2016, 2013, 2010, 2007.

Methods to Fix “Cannot Access OST File in Outlook”

As the version of Microsoft Outlook changes, the method to repair OST file also changes. Microsoft Outlook 2000 & 2003 has Detect & Repair tool was provided to recover damaged data files. However, in Outlook 2007, the Office Diagnostics tool (scanost.exe) has taken the place of Detect & Repair software. After that, Microsoft Outlook 2010 & 2013 also Repair option but it is designed specifically to repair MS Outlook installation files & registry entries only. Now, in the latest edition such as MS Outlook 2013 & 2016, a user can easily repair OST file by using scanpst.exe or recreating OST files. Therefore, based on the versions we have discussed different methods to resolve cannot Access OST file in Outlook 2019, 2016, 2013, 2010, 2007 and below versions.


Method 1: Recreate OST File in Microsoft Outlook 2013, 2016, 2019

As everybody knows the Outlook OST file is a replica of Exchange Server mailbox. Therefore, in order to resolve “cannot Access OST file in Outlook 2010, 2013, 2016, 2019”, one can simply re-create OST file by downloading the replica of items again.

  1. First of all, exit the Microsoft Outlook 2019, 2016, 2013 or below version application
  2. Then, navigate to Start >> Control Panel and double-click on the Mail option
  3. The Mail Setup dialog box will show the current profile in the title bar. If you want to select some different profile, choose Show Profiles. Then, choose the profile name and click on the Properties option
  4. After that, click on the E-mail Accounts option
  5. Now, click on the Data Files tab, choose the Exchange account. Then, click on the Open File Location
    The File Explorer window will open the location of data files. The Account Settings & Mail Step windows will remain open.
  6. Next, close Mail Setup & Account Settings dialog box and go back to the file explorer window.
  7. Now, in the file explorer window, choose the Exchange data file and right-click on it. Then, click on the Delete button
  8. Next time whenever you open the MS Outlook again, a new OST file is created for that particular account.

Method 2: Recover OST File Outlook 2010 & Above Versions

In Microsoft Outlook 2010 and above versions a user can go for the Inbox Repair Tool also to recover corrupt OST file. The scanpst.exe is used to remove corruption from the OST file also along with PST file. A user just needs to run it on the system, it diagnoses the corrupt OST file and tries to repair it. In addition, a user can easily use this in-built tool in Outlook 2013 & 2016 also to repair OST file. After this you will get the solution to fix cannot access OST file in Outlook.

Note: The tool is capable of removing the only a minor level of corruption from OST file of Outlook. If you want a perfect solution then try OST to PST Converter.

Method 3: Repair & Recover OST File in MS Outlook 2007

In Microsoft Outlook 2007, a user can recover Outlook OST file with the help of SCANOST inbuilt tool. A user just needs to locate the file on the local machine and run it on the system to repair damaged OST file. However, it repairs the Offline Storage table with a low level of corruption. Now you can fix the cannot access OST file in Outlook 2007

Method 4: One-Stop Solution to Repair OST File in Outlook 2019 & Below Versions

All the method discussed above has limitations and every method is for the different versions of MS Outlook. Moreover, it is not a foolproof solution. Therefore, in order to have an effortless, a user is advised to use a professional solution to fix “cannot access OST file” from Outlook 2016, 2013, 2010 & below versions. The OST file conversion software is designed mainly to repair any type of corrupt or damaged OST file in any version of the MS Outlook. It is an all-in-one solution without any file size limitation. Moreover, a user can recover all data items stored in OST file like emails, contacts, calendars, etc.

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Follow the Steps to Resolve Cannot Access OST file in Outlook Issue

  1. Download and Install the application on your system and click on Add file.

2. Select the Outlook OST file from your system.

3. Select the Scan Mode from Quick Scan and Advanced Scan

4. Software Starts the Scanning process of the Outlook OST file.

5. Select the PST file format and then browse the destination location to save the data.

Note: After saving the data items the user can easily import the resultant file in Outlook application.

Cannot Access OST File in Outlook – User’s Queries

Here you will find a list of queries. All queries are taken from reputed forum sites, simply read and understand the different scenarios of cannot access OST file in Outlook.

“I am using Microsoft Outlook 2016 which synchronized with Microsft Exchange Server. I opened Outlook and getting an error cannot access OST file in Outlook 2016. Please suggest me the simple and working method to resolve this error.”

“After opening Outlook Mail Client, I am getting pop up error message “cannot access OST file in Outlook”. Now I want to know, is it possible to fix Cannot access ost file error for Outlook 2019? If yes then please share the solution.”


As everybody knows in order to have proper functioning of MS Outlook, healthy OST file is very important. Any type of issue in the OST file can badly affect the normal working of the Outlook and prompt for cannot access OST file in Outlook. Therefore, considering the requirement of users we have discussed all possible solutions to fix “cannot access OST file in Outlook 2019 / 2016 / 2013 / 2010 / 2007”. However, as the manual discussed above has limitations, so a user can go for a third-party tool OST file converter. This will repair & recover OST file in just a few numbers of clicks.

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