Outlook OST file Cannot Be Opened

Resolve Error- “Outlook OST file Cannot Be Opened”

With Outlook users configures their Office 365, IMAP, and Exchange accounts. After account configuration Outlook automatically saves all mailbox data of users in Outlook Data files like- OST and PST. On these Outlook saves all important information of users like- emails, contacts, calendars, etc. This function of Outlook is very helpful for those users who need to save their important data for future use. Users can easily make changes in these OST files if outlook has no stable connection with the server or internet.

But sometimes Outlook doesn’t respond to users properly when users try to open these OST files in Outlook and faces errors like-

“Outlook OST file Cannot Be Opened”

Reasons For OST File Corruption

  • Data Storage Device Failure:-
  • Power Failure:-
  • Networking Connection Failure:-
  • Synchronization Error:-
  • Viruses or Other Malicious attacks:-

These are the reasons for OST file conversion by which Outlook OST files become inaccessible.

Solution to Resolve Error- “Outlook OST file Cannot Be Opened”

Mostly for repairing small errors of Outlook users can utilize the inbuilt application of scanPST.exe/inbox repair tool. This method will help users to resolve minor corruption problems from OST files. But in case if a user is unable to get the expected result with this free utility, the only method which helps you reaccess your OST file’s data is to perform OST to PST file conversion. By export OST file data to an accessible or new PST file user will be able to access his important data from OST file.

Automated Tool to Convert OST to PST files By PassFixer

If any error enters in the Outlook OST file this makes users unable to access their data from OST file nor open OST file. So, to overcome such conditions you can make use of Passfixer OST to PST Converter Software. It is a brilliant or successful tool to repair corrupt OST files and recover lost data from OST files. This software will help you to fix OST Files and convert OST to PST Files with the original folder structure and properties. It also offers users to easily split large PST files into Small PST File from 1 GB, 2 GB, 3 GB, 4 GB, and 5 GB during conversion.

Key Features of OST to PST Converter

  • Smoothly remove all the corruption errors from OST File to make it accessible for all users.
  • Extract data from inaccessible OST file and save them to PST File with maintaing data integrity.
  • Recover/Convert OST to PST and various other file types inclufing- EML, EMLX, MSG, vCard, MBOX, HTML, Zimbra, and more.
  • The OST to PST Converter Software gives you permission to re-access on OST file and migrate OST file into Office 365, Gmail, Outlook.com, and YahooMail like cloud platform with fully security.
  • It supports to Convert OST file of Outlook version (up to 2019)


The Error “Outlook OST file Cannot Be Opened”mostly Outlook shows this error when the OST file is in a corrupt state. The only solution that is available for users to resolve this problem is using a method to convert OST to PST or automated Outlook Recovery software. Users can try PassFixer OST to PST Converter Software to do both tasks of making recovery as well as OST file conversion. If you are want to get a quick analysis of the software function simply try its free demo version.

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