Converting OST to PST files can be done using various methods and third-party tools. Here's a straightforward approach using Microsoft Outlook itself:
Method using Microsoft Outlook:

Open Microsoft Outlook:
Ensure that you have Microsoft Outlook installed on your system.

Create a New PST File:
Open Outlook and go to "File."
Select "New" and then choose "Outlook Data File."
Choose "Office Outlook Personal Folders File (.pst)" and click "OK."

Select Items to Move:
In the Navigation pane, right-click on the mailbox or folder you want to export.
Choose "Copy Folder" or "Move Folder" option.

Choose the PST File:
In the "Copy Folder" dialog, select the PST file you created earlier.
Click "OK" to start the copying or moving process.

Finish the Process:
Depending on the size of your mailbox, this process may take some time. Once completed, you will have a PST file with the selected items.

Third-Party Tools:

If you prefer a more automated or advanced solution, third-party tools can simplify the process. One such tool is the Kernel for OST to PST Converter. Here's a general guide:

Download and Install Kernel for OST to PST Converter:
Download and install the tool from the official website.

Launch the Software:
Open the Kernel for OST to PST Converter.

Select the OST File:
Use the "Browse" button to select the OST file you want to convert.

Choose Conversion Options:
Select the conversion options based on your preferences, such as file format (PST) and other parameters.

Specify Output Location:
Choose the destination where you want to save the converted PST file.

Initiate the Conversion:
Click on the "Convert" or "Start" button to begin the conversion process.

Finish and Verify:
Once the conversion is complete, you can locate the PST file in the specified destination and verify the data using Outlook.

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