OST File not Synchronizing

How to Resolve Error “OST File not Synchronizing”?

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OST file is also known by the name of Offline storage file. This type of file is created when the MS Outlook application configures with the MS Exchange account. It also allows the user to work on OST file thorugh Outlook even there is no network connection. Once the network is re-established between the Exchange server and Outlook, the user can access the files once again. However, sometimes the Outlook user faces OST file not Synchronizing errors with the Exchange Server.

Reasons Behind OST File Synchronize Errors

Outlook users may encounter this Outlook OST file not syncing error due to the following reasons.

  • Due to a sudden attack of virus and malware in the computer system
  • User suddenly or forcefully stops the Outlook application
  • When there is an issue in a network connectivity error
  • Hardware defects

SysInspire OST to PST Converter

  • This Software has advanced scanning feature which scans the OST file and immediately remove there errors to make it usable for the user.
  • If firstly you want to know about the performance of the software you can try the demo version

How to Resolve OST file not Synchronizing

You can follow any one technique given below to resolve OST file errors. Follow the steps carefully

Technique 1. Using OST Integrity check tool

This OST integrity check tool is an inbuilt feature by microsoft which comes along with there installation. This tool helps the user to fix OST File not Synchronizing error by following the below steps:-

Step1. Close the Outlook application

Step 2. Then go to the location on drive :\Program Files\Microsoft Office\OFFICE12 and click on the ScanOST.exe

Step 3. Then it will ask you to select the profile which contains corrupted OST file

Step 4. After that a window will appear in which you can select the file folders you want to repair

repair issue of OST File not Synchronizing

Step 5. Now tap on the begin button then scanning of selected files get start

Live preview while fixing OST File not Synchronizing

Step 6. In last after the completion of scanning the tool will display a confirmation message

Technique 2. Manual Synchronization of Files

This process is simple and it will be helpful to fix OST Synchronization problem at the folder level. You can perform this process by following given steps-

  • Find out the location of the OST folder and press right on it and choose the properties tab
  • Press clear offline items and press OK
  • Choose the send/receive tab and press on the update folder tab
Update Folder
  • Use the Inbox repair tool
  • Recreate OST file- If you face the issues again and again, rename the file and create new OST file again. To recreate the OST file, you need to close the Outlook email app and then add the command Navigate to C:\Users\administrator\AppData\Local\Microsoft Outlook. Search for the OST file and rename it. Once again start the application for mailbox synchronization.

Also take a look on this Blog Posts :- Move IMAP OST File Outlook 2016 to New Computer

Challenges that you face during the conversion process

The manual method of conversion is not reliable, as the formatting might be changed during the process. In such a case, it is better to use innovative application launched by SysInspire- that guarantees 100% accuracy and precision after the OST to PST Conversion. The OST converter helps the user convert OST file into PST without having any expert knowledge.

Features of the OST to PST Converter Software

  • Convert OST Contacts into working PST, VCF, HTML file and MSG
  • Preserves the hierarchy of data after making the sucessfull conversion
  • Advanced scanning feature to fix any OST synchronization problem
  • Convert email, contacts, attachments, folders, etc without doing any moderation
  • Splitting feature to cut the size of recoverd PST file into small PST files (1GB up to 5GB)
  • Displays the live preview of mailbox while OST to PST Recovery
  • Support different versions of Outlook 2019, 2016, 2013, 2010, 2007, 2003 and 2000 files.

Step by Step Instruction to Use the Software

  • Download the software and open it
  • Select the OST files that you wish to convert
export ost to pst
  • It scans the OST file and removes there errors
export ost file to pst
  • Now you can see the preview of all mailbox folder items
export ost to pst
  • Press the export tab and select the options as per the requirements
  • Press the browse tab to save the file to the desired destination
  • For splitting the file, you can select the split file command
  • In last click on the conversion tab and software will start the process.


In last we came to the conclusion that the manual method is not reliable and not guarantee to make the sucessfull Conversion of OST file.So it is better for the user to use SysInspire OST to PST Converter software. This software is capable to eliminate outlook OST file not syncing error in a few clicks.

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