An outlook OST file is an offline folder file of Microsoft Outlook application. This file stores the copy of the mailbox data items on the Exchange server.
OST file permits the user to work in Offline mode. When the connection gets established between the Exchange server and the Outlook application.
All the changes made by the user in offline mode get synchronized with the Exchange server.
Sometimes MS Outlook users have to face cannot start Outlook 2016 OST file cannot be opened issue.
It means that Outlook users are unable to access the OST file in Outlook 2016 and its below versions. Let us understand the situation with the help of query asked by the user.
Cannot Start Outlook 2016 OST File Cannot be Opened Issue
“All of a sudden when I tried to open Outlook application I get an error message that it cannot start Outlook 2016 OST file cannot be opened issue.
I don’t to know what to do in this situation, This OST file contains my important official mailbox items. Please suggest appropriate methods to resolve this issue. Thanks!”
If you are facing such type of issues like Outlook OST file cannot be opened windows 10 and below versions then this article is for you.
In this article, I am going to discuss the primary reasons which cause this problem. Also, the best and possible solution to resolve this issue. Before moving to the solution part. Let us first discuss the reasons.
Potential Reasons Responsible For Microsoft Outlook OST File Cannot Be Opened Error
There are many possible reasons due to which the user has to face cannot start Outlook 2016 OST file cannot be opened issue.
Outlook users have to face this problem due to the corruption in the OST file. Few of the reasons are discussed below.
- Abruptly or forcefully termination of Outlook application.
- Improper installation of MS Outlook application.
- Due to synchronization between the OST file and Outlook application.
- In case Outlook exchange server is deleted and your OST file becomes orphaned.
- Due to bad sectors present on the hard drive.
- OST file will get corrupted due to bad sectors present on the hard drive.
Manual Method To Resolve Cannot Start Outlook 2016 OST File Cannot be Opened
Method 1: By killing the entire MS Outlook related process from the task manager.
- First, Open the taskbar by pressing Ctrl + shift + Esc.
- Now click on processes or if you are using Windows 10 click on the details tab.
- Now search for the processes such as Communicator, Outlook or UCMAPI. If the user finds any of these processes then just select and click on End Task.
Method 2: Use Inbox Repair Tool SCANPST.EXE to Repair Corrupted OST file
The user can try Scanpst.exe to resolve this issue. Inbox repair tool or scanpst.exe is used to diagnose and identify problematic PST and OST files. This utility assesses the state of the file structure.
In case if it is no longer organized in its appropriate structure then this Inbox repair tool will reconstruct the appropriate headers after correcting the error with a reset.
The user can refer this to know how to repair corrupt OST file Outlook 2016 and below versions.
Downsides of The Manual Process
- The manual process is long and consumes lots of users time.
- This process requires strong technical skills.
- Also, there is a high risk of data loss is there. It doesn’t guarantee data integrity and security.
Automated Solution to Solve Outlook OST File Cannot be Opened Windows 10 and Below
As we have seen that the manual process have major limitations. So it is better to take the help of OST to PST Extractor application.
This tool helps the user to convert the Outlook Outlook OST file to PST file format. In case if you have corrupted or orphaned OST file then the user can also perform the conversion process.
This is a remarkable solution to export the corrupted OST file to Outlook PST file format. The user can later import the resultant PST file in Outlook application. Moreover, this application is compatible with all versions of Windows.
Many times Outlook users have to face this cannot start Outlook 2016 OST file cannot be opened issue.
There are various causes of this error like abruptly shutdown of Outlook application, due to any synchronization issue between OST file and Exchange server, etc. So we have given the manual solution to resolve this problem.
But in the manual process, there is a high risk of data loss. So it is better to take the help of an expert solution to convert OST to PST file.