OST cannot be accessed because it has been configured for use with different mailbox

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MS Outlook invokes multi-kinds of error message on different-different situations and the error OST cannot be accessed because it has been configured for use with different mailbox is one of them. In a certain time, this error appears on your screen and blocks the OST file for use.

Look at below some of the reasons behind the error-

  • When you try to open the Outlook OST file on a different computer where the OST file is not created.
  • When Outlook failed to synchronize with the server
  • If Outlook data file.ost is damaged or corrupted for any reason.
  • If the two data files have the same name in a single Outlook profile.

Recommended Solution to Fix OST Error


Get this easiest solution to fix all type of OST file errors and convert OST to PST another working file format like- EML, EMLX, MSG, MBOX, Office 365 etc. Another one feature of this SysInspire OST to PST Recovery tool is it has the capability to Recover & Convert OST, PST, and also the NST file of Outlook to available file types

Fix OST cannot be accessed because it has been configured for use with different mailbox Yourself

  1. Login and open the OST file on the same Outlook account where the OST file created.
  2. Login with Administrator privilege to gain the ownership of Outlook OST file and try to open & import OST file.
  3. Your Exchange Administrator also helped if they approach to performs the export from the old server OST file.

Try Professional Software if above steps would not help

If the user tried all possible fixes as stated above and failed to open OST file OR the user need to access older OST file in Outlook on a different computer then conversion of OST file to PST is the best option for the need. Here I strongly recommend trying SysInspire OST to PST Converter Software because this tool specially designed to extract items from OST file and create a fresh Outlook PST file that is open by any version of MS Outlook including the latest version of MS Outlook.

Few Impressive key-features of software

  • Easy to handle larger OST file for recovery and conversion
  • Open OST file within few seconds and explore entire list of folders and subfolders
  • Preserve OST email metadata and properties very well.
  • Support every version of OST file to PST conversion including OST 2019, 2016, 2013, 2010, 2007, and 2003.
  • Check the preview of OST items within the software before initiating OST to PST Conversion.
  • The OST to PST Converter Software offers you more than 9+ conversion options for OST such as- OST to PST, EML, MBOX, Office 365, MSG, EMLX, HTML, VCF, and ICS file.

How to Repair OST file with SysInspire

Download and Install SysInspire Outlook OST Repair tool

Launch this software and click on Select OST button given on toolbar

Now a Browse OST file window will appear on your screen simply get your corrupt OST file from your local computer and click on start scanning to get its inner database.

After selecting the OST file the software will automatically fetch all mailbox items from it.

Select the required mailbox items and press the Save OST button that appears on the toolbar.

Now a various different file format options will be shown on your screen simply for converting it into a working file type.

Select Export to PST option and simply click over the convert button to make the corrupt OST file inner data again accessible with Outlook.

After completing the whole repairing and conversion process the software will show you completing dialog box simply ok

This OST to PST Converter software is a 100% risk-free tool and provides 100% conversion quality of OST data to PST. Software never let’s go any single byte of data from the OST file and restore the entire list of messages stored within an OST file.

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