How to convert OST file to PST in Outlook 2007

How to convert OST file to PST in Outlook 2007

With this blog, we will discuss the step-by-step procedure to convert OST file to PST in Outlook 2007.

So, before jumping onto how to convert OST file to PST we should know what is OST file and PST file.

PST stands for “Personal Storage Tables” which are used to store the data in the form of Personal Folder.

A personal folder file is an Outlook data file which consists of email messages and other items.

OST stands for “Offline Storage Tables” which basically helps you to work offline and as soon as your system comes in contact with the internet it synchronizes the data.

Now let’s see the various reasons to convert OST file to PST.

Reasons to convert OST file to PST in Outlook 2007

Various reason to convert the OST file into PST are :-

1. Synchronization Issues with Exchange Server –

This problem arises only when there is an interruption during the Synchronisation process of OST file with Exchange Server.

2. Corruption of OST File –

Corruption of OST file is the most common issue and OST files get corrupted due to various reasons such as virus attack, power failure during OST to Server Synchronisation.

3. OST file size limit –

OST file size limit varies for different versions of ms-outlook for Outlook 2007 it is 20GB whereas in Outlook 2010 and 2013 it is increased to 50GB.

Methods to convert OST file to PST

Various methods to convert the OST file to PST are:-

  • Manual Methods.
  • Software Solution.

1.Manual Methods

 1. Exporting .OST to .PST  –

It is the most effective technique for exporting the ost file to pst but the biggest drawback about this technique is that it only exports the content part of the email. So, therefore go for this technique only when you have to Export the emails only


  • Click on File -> Options ->Advanced.
  • As soon as you Click on Advanced a dialog box will appear then Click on Export and then choose PST as exporting medium.
2. Archiving –

Archiving is an important task which help us to check the size of the data.So, it is always best to set an auto-archive option.


  • go to tools ->.click on options ->others ->auto-archieve.
  • Apply to all folders.
  • File ->Archieve ->run.
3.Drag and Drop –

If you use this method then you have to drag and drop the individual content with the target folder names.


If all these manual tricks do not work then the only option that remains is to use a good and reliable professional solution.

One of the applications that I have used earlier is Cigati OST to PST Converter. This tool is used to export multiple offline OST files to Outlook PST files.

In case your ost file data is corrupted, you can still export them into the desired format such as PST,DBX and EML.

Being an expert, I would recommend you to try the free demo version of this software as it will help you to evaluate the complete software and all its features

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