Facing a problem or error regarding Microsoft Outlook OST file cannot be opened Windows 10? If you recently update your Microsoft Outlook, you need to reboot your system or restart your Outlook application. This can help you to fix your issue, if not then check the given below solutions. But first, you need to know a little bit about the Microsoft Outlook & OST file.
Microsoft Outlook
Microsoft Outlook is an Email Client which contains functions such as, tasks, events, mail messages, notes, calendars, etc. Outlook is both a WEB-based as well as a Desktop-based application. When we configure an IMAP account, data stored in the system is saved in OST file format.
OST File
OST file means Offline storage table, generally helpful to solve the problem with an internet connection by allowing users to work offline. Users can make changes in emails and save them in drafts and later on it will sync with the exchange server.
The Reason Behind the Outlook OST File Cannot Be Opened Windows 10 & Office 365:
- Due to an update in the application
- If you are not using the new version of Microsoft Outlook
- Malware and virus can affect OST file
- OST files can be corrupted or inaccessible
Error- “Outlook OST file Cannot Be Opened Windows 10”
The error OST file cannot be opened often occurs when the OST file is corrupted. You can recover OST with Microsoft Outlook’s in-built function called ScanPST.exe, which is located in the Outlook directory. But ScanPST.exe may fail to recover corrupt and large-sized Outlook data files. In that case, you can delete and recreate again OST file,
To do so, follow the given steps:
- Close the Microsoft Outlook application and delete the OST file from your system.
- If you don’t know its location, go to File >> Account Setting >> Data Files or you can search localappdata\Microsoft\Outlook\ in Windows Search and press Enter. (You will be taken to the folder where the OST files are located)
- After deleting the OST file, Start Microsoft Outlook (Outlook will automatically recreate the OST file in your system)
If there is a problem with your Outlook application, in such a case, you can repair Outlook with Office Repair. You also need to install new Microsoft Outlook updates.
If a Microsoft Outlook add-in is in disagreement with the application, it may stop Outlook from opening OST files.
To disable the inappropriate add-in and fix Microsoft Outlook OST file that cannot be opened, follow these steps:
- In Microsoft Outlook, open the File tab >> Slow and Disable Add-ins.
- Check which Add-in is causing the error and disable it
For Some Users, Recreating OST is not Possible due to some issues:-
Mailbox is inaccessible due to a disengaged server or lost connection.
The size of an OST file is too large, so downloading the complete file from the server is impossible.
In such cases, the only option is to open an OST file by using an advanced OST converter tool, such as SysTools OST Converter. The software can easily convert an OST file to PST, which you can import into Outlook and access your mailbox. This is the ultimate solution if Outlook files cannot be opened. Open OST files using the Professional method and convert them into PST format to Open in Microsoft Outlook.
Benefits of SysTools OST Converter:-
- The software supports Microsoft Outlook version 2019, 2017, & others.
- You can use a free demo version to open your OST file
- Systools provides you with safe and secure software
- You can open large-size or inaccessible OST files.
How to Use SysTools OST Converter
- Download the software in your system >> Open
- Click on ADD files
- Add your OST file location
- Click on ADD
- To Open OST files, go to Export
- Set the location of your Export file and click on Export.
- Now the conversion is complete
- Now go to your PST file location and open them with Microsoft Outlook.
( You can easily view files that contain data because of the highlight feature of the software and You can Open or view your OST files with email data, hex, mime, attachments, etc.)
Conclusion:
In this write up we get to know that there can be error in Microsoft Outlook like Outlook ost file cannot open windows 10. Sometimes OST files cannot open due to some reasons as we discussed above. We can use the manual method Repair OST file, an in-built feature of Outlook, and also with the professional tool method in case, the manual method didn’t work. Hope you understand this blog and solve your query.
