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"Just wanted to say that your OST repair software is amazing. Not only did it repair our corrupt Outlook .ost file, but kept the message and attachment structure in tact. 5 years of old OST file successfully repaired and exported to PST file! No words can describe how I feel. Thanks a ton. I will definitely be backing up everything now. You guys rock!..."

- C. W. Hawk

OST to PST Converter

MS Outlook, as most of you know, uses different types of files to store the information that is transferred by means of emails, tasks, journals, etc. Outlook stores this information in either OST (Offline Storage Table) or PST (Personal Storage Table) files. The OST file is an offline file that is created when you operate on Outlook in the offline mode, Outlook Cached Exchange Mode. Once you are through with your work, you can synchronize the changes in the local copy with the Exchange Server. However, if the changes are not synchronized properly it means that the OST file is corrupt. Then, you should employ certain methods after finding the cause of corruption. If you fail to recover the OST file, then you should convert OST to PST file using this advanced OST to PST conversion software.


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Some Common causes of OST file Corruption:

  • Due to hardware errors (hard drive crash or any other damaged in computer)
  • Dirty shutdown (Due to power failure problems)
  • OST file synchronization errors
  • The user mailbox is deleted or damaged
  • Exchange database has got corrupted or inaccessible
  • Virus attack
  • MS Outlook has got terminated abnormally
  • Exchange user profile has got modified or corrupted
  • MS Exchange server name or user mailbox name has altered.
  • Compatible with Windows 10, 8.1, 8, 7, Vista and XP
  • Supports to MS Exchange 2016/2013/2010/2007/2003 servers; MS Outlook 2016/2013/2010/2007/2003


This advanced OST to PST Converter is the best and widely used ost file recovery program for corrupt Microsoft Exchange offline folder (.ost) files. The software employs advanced scanning technologies to scan the orphaned or damaged .ost files completely. It recovers lost, damaged or corrupt items effectively and accurately without affecting the original data.


How to Convert OST to PST

OST to PST Converter is a simple, easy to use, robust and award winning tool which is designed to convert Outlook OST to PST file by recovering damaged files from all sorts of corruption. In addition, this utility preserves the formatting of the HTML and RTF messages during the OST PST conversion. Common OST file errors that create the need to Convert Outlook OST to PST file are as follows:

  • Outlook.ost is already in use by the maximum number of applications
  • "The xxxx.ost file is not an offline folder file."
  • "Unable to expand the folder. The set of folders could not be opened. Errors could have been detected in the file xxxx.ost. Quit all mail-enabled applications, and then use the Inbox Repair Tool"
  • Encounter a large numbers of conflict items.
  • Cannot open particular Outlook items when offline.
  • "0X8004010F An object could not be found"
  • Task ‘Microsoft Exchange Server’ reported error (0X8004010F): ‘The operation failed. An object could not be found.’
  • Emails and other objects in Exchange mailbox are deleted by mistake.
  • Exchange is currently in recovery mode.
  • The OST file size reaches or exceeds the 2GB limit


Advanced Outlook .ost to .pst conversion tool helps you in every corruption situation. The software will help you to convert .ost files into .pst files efficiently and view all data easily with MS Outlook.


OST to PST Converter with tremendous features:


  • Convert damaged .ost file to .pst accurately when Exchange mailbox is deleted or inaccessible due to corruption.
  • No need of original outlook profile.
  • Supports OST file recovery in all sorts of corruption.
  • Options to save converted OST file items either into PST, MSG, EML or DBX file format.
  • Provides the option to preview the converted data of OST files before verifying and saving the recovered data of Exchange mailbox items.
  • Supports MS Exchange Server 5.0, 5.5, 2000, 2003, 2007, 2010. 2013, and 2016.
  • Supports MS Outlook 97, 98, 2000, 2002, 2003, 2007, 2010, 2013 and 2016.
  • Support to recover deleted items in Exchange mailbox, including mail messages, folders, posts, calendars, appointments, meeting requests, contacts, distribution lists, tasks, task requests, journals and notes.
  • Support to repair oversized 2GB .ost files.
  • Ensures quick and secure repairing of the large sized OST files.
  • Saves the converted .pst file at any desired location including networked drive.
  • Supports ost recovery from encrypted or password protected .ost files.
  • Supports to convert Outlook OST to PST file in Windows 10, 8.1, 8, 7, Vista, XP and 2000 operating systems.
  • Supports Outlook Express 6.0, 5.5, 5.0 and 4.0
  • Rich and simple graphical user interface, no advanced technical knowledge is required.
  • Recovers lost or permanently deleted emails and other data from unusable .ost files.


Free Evaluation version of advanced OST to PST Converter:


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100% Secure  || Trusted by Millions of Users Worldwide || Developed by Microsoft Gold Partner  || 30 Days Money Back Guarantee!


Free demo version of the software shows the preview of converted data including e-mails, contacts, attachments and other items of the OST file. Fully functional free evaluation version of the product lets you to use every feature of software except the saving option.