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Cannot Open Your Default Email Folders Outlook 2010 OST File -Fix Easily

Are you facing cannot open your default email folders Outlook 2010 OST file problem. If yes then read this article. We have given the manual as well as an automated workaround to resolve this issue.

Microsoft Outlook application is the most widely used email application around the globe. This application offers an exclusive and extensive range of features along with a user-friendly user interface. MS Outlook email client stores the Exchange mailbox data in the OST file. This allows the user to work in Offline mode. With lots of perks on one side, there are some drawbacks of this email client. Sometimes the user has to face cannot open your default email folders outlook 2010 OST file problem. Due to this issue, the Outlook user cannot be able to perform any activity. Like, cannot send or receive emails. This situation very troublesome for Outlook user.

So in this article, I am going to provide you the most prominent reasons for this error. And also we will discuss a solution by using the manual as well as automated approach.

Reasons for Outlook 2010 Cannot Open Your Default Email Folders OST Problem

Here are the several causes for this error:

1. In the case of Outlook, Navigation pane settings have been corrupted.

2. If the Outlook application is running in compatibility mode.

3. If the Outlook OST file has been damaged or corrupted, or it has been deleted by mistake then it could also lead this issue,

Manual Workaround To Fix Cannot Open Your Default Email Folders Outlook 2010 OST File

Method 1: Switch Of Outlook Incompatibility Mode

1. First, the user has to Navigate to the Outlook installation folder.

C:>>program files>>Microsoft Office >>Office-XX>>Outlook.exe

2. Now Right click on the file “Outlook.exe

3. Then click on “Properties” and navigate to the “Compatibility mode”

4. Now the user has to uncheck this option “run this program in compatibility mode

5. At last click on Apply button.

Method 2: Run the Outlook Application in Safe Mode

We know that faulty add-ins can cause many Microsoft Outlook user. So by running the Outlook application in safe mode disables all the add-in is that you have installed. It is always a good idea to try this to fix when any issue arises.

Method 3: By using Inbox Repair Tool:

The user can try Scanpst.exe to repair the OST file. But this inbuilt utility will help to resolve only minor level corruptions of OST file. For complete info about this method, the user can refer this repair OST file Outlook 2010 

 Limitations of Manual Approach 

1. There is high risk is of data loss is there in this manual approach.

2. This process requires strong technical skills.

3. Manual workarounds are lengthy and difficult to perform.

Automated Solution to Resolve Cannot Open Your Default Email Folders Outlook 2010 OST File

The user might be unable to resolve the error after applying all the manual methods. If this happens then the user can use the Exchange OST File Recovery Software. This helps the user to recover the data from corrupted/damaged OST files. Also, it gives you various options to save the OST file data as Outlook PST / EML / MSG / Office 365 / HTML. This software comes with easy to use graphical user interface so that anyone technical and non-technical users can use this software with ease. For complete info, the user can download the trial version of this software.

Final Conclusion

In this write up we have covered the cannot open your default email folders outlook 2010 OST file error. We have given the various reasons for this problem, also we have resolved the issue with the help of manual as well as automated methods. The manual approach is quite lengthy and difficult. So to resolve this issue the user can take the help of Exchange OST recovery software.


Information Security Engineer| PGDIS | Passionate Technical Blogger

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