How to Compact OST file in Outlook 2016, 2013, and 2010?
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Last updated on April 17th, 2023 at 01:06 pm

OST or Offline Storage files are the offline outlook data file that represents the user’s mailbox data in offline mode on local drive upon registration with Exchange Server basing upon Microsoft Outlook.

The OST automatically created on the first use of Microsoft Outlook upon connectivity with the Exchange Server.

Offline folders are a true gemstone for the user to work offline and then it facilitated to synchronize changes with the Exchange server the next time they connect. The tendency to work offline is useful in environments with limited connection facilities.

The complications in Outlook due to Over-sized OST file:

  • Difficulty to open OST files documents.
  • No further addition of data to existing Exchange OST files.
  • Abrupt pauses in the MS Outlook program.
  • Error messages erupt during synchronization.
  • Dissatisfaction in fixing synchronization issues between OST file and MS Exchange Server.

Rapid Solution to Resolve Outlook OST Errors

Download eSoftTools Free OST to PST Software that has the ability to compact OST file in Outlook and also Export OST items to other working file format. like:-

  • OST emails to PST, EML, MSG, HTML, MBOX,
  • OST Contacts to vCard, CSV
  • OST Calendars to ICS
  • Export OST to Zimbra, Gmail, YahooMail, Office 365 Cloud

Now, coming to the main segment, what are the methods to compact an OST file?

Manual Method to Compact OST File in Outlook 2016, 2013, and 2010

Users can reduce the size of the OST file by depending on the In-built utility in Outlook. Compacting the file size might help in improving Outlook performance.

 To compact OST file in Outlook, follow the respective steps.

  1. In Outlook, click file tab >> Info >> Account Settings.
  2. Now, click on the Data Files tab, and choose the data file to compact.
  3. In the opened dialogue box, click on then click Settings.
  4. Now another window will open click on advance and then Outlook data file settings.
  5. In the Outlook Data File Settings dialogue box, click Compact Now, to reduce the OST file size.

ADVANCED TOOL to Reduce OST file size in Outlook 2016, 2013, 2010

The eSoftTools OST to PST Converter helps to not only compress the OST file but also migrate the file to PST format so that it can be easily accessed in the MS Outlook. This software easily scans the large OST file in a few seconds and after that, all the items of the database can be imitated.

Software working process:-

compact ost file

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