How to Resolve Synchronization Issues While Syncing Exchange Mailbox With OST Files In Outlook?

Users mostly create Microsoft Exchange mailbox account while using MS Outlook. So when the account is created an OST file is automatically created with the extension.ost. These files are popularly known as the offline storage table and user can easily access to the exchanged mails when the user is not connected to the server/ internet connection.

Sometimes while using the Exchange mailbox server may get down / loss connection so the server may not sync all the email in OST file. Therefore some important mailing function can stop such as sending and receiving of messages, deletion of mails etc. All these create a synchronization problem when a user synchronizes the Exchange Server. This can lead to situation of crash of Outlook application or slowdown the application.

Rapid Solution To Solve Synchronization Issues With Your Exchange Mailbox Server

Step1: To Check Offline Folders Are Properly Synchronized

Step2: Use OST Integrity Checker Tool

Step3: Reconstruct Your.Ost File


Step1: To Check Offline Folders Are Properly Synchronize

• Right Click on the Folder and Click on Properties from Various Options Displayed.

• Next Click On Synchronization Tab Displayed At Top, If There Is No Synchronization Tab Displayed Than You Might Have Not Setup Your Profile To Use Offline Folder.

• Now You Have To Check The Various Parameters Under Statistic

  1. Date Of Last Synchronization
  2. Number Of Items In Offline Folder
  3. Number Of Items In Server

Now if the number of items in both offline folder and server folder same than there is no problem synchronization is working properly. If the items of both offline folder and server folder do not match than it means you have some problem with your profile setting.


Step2: Use Integrity Check Tool

This is an inbuilt tool for the OST files. This tool quickly resolves the synchronization problem by recovering the lost information after the scanning the OST files and comparing the mailbox items with the scan log which is available in deleted items folder.

Integrity check tool is only available for the users using on Outlook 2003 and Outlook 2007. They have to scan the files to check the synchronization problem with OST files.

If users are using Outlook 2010 or the latest versions than they do not have the Integrity check tool available with them. If you come across some problem in the folder than you have to again synchronize the folder in the Outlook application. For doing this follow the steps mentioned below:

  1. Right Click On The Folder And Select Properties From Various Options Displayed.
  2. Then Click Clear Offline Items And Click Ok
  3. Find And Select Send/Receive Tab and Click On Update Folder.

Step3: Create New OST File

By creating new OST file users can solve their synchronization error. OST file is reconstructed from the scratch. For this the user has to delete all his OST files and again download the files from the Outlook server for offline usage.

Automated Method

These are the some options for the user to resolve his synchronization error. But if the user does not have complete knowledge about the solution or is not able solve his problem than we recommend for using third party tool that is Regain OST to PST Converter tool. We provide trial version of this tool for the users to check the performance of the OST to PST Converter tool. This tool does not only reconstruct your file but also provide you to transfer to various formats without loss of data and maintaining the hierarchy of data.

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