How to split corrupted or inaccessible Outlook PST files?

Justin Hansen
Justin Hansen used Ask the Experts™
I want to breakdown corrupted or unusable Outlook PST files into smaller chunk? How this is possible without repairing PST files with any paid or scanpst.exe.
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Benny JohnTech Guy

Hey Justin,

Scanpst.exe only repair minor corruption issues within 2Gb data limits, if your Outlook data file is larger then you need to refer to third party tools.
There are various options if you Google, but I suggest you to refer to Kernel tools. The PST repair tool for them is really fantastic and works great. It can repair highly corrupted PST file with any size and provide option to split it into multiple PST files. Give it a try.
Justin HansenIT Technical Consultant


As I said earlier that I don't want to repair the file but just curious to know that Is this possible to split Outlook PST files without repairing them.
JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018

No.  You will likely end up with bigger corruption than you started with.

My recommendation is to repair first (and verify), and then split.

Good luck.
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Benny JohnTech Guy

I agree with John. Third party tools are there, but they can split only healthy PST files. If you are looking for a tool to split a damaged Outlook data file, then there is no option available.
SysToolsData Expert - Recovery,Backup,Migration

Hi Justin,

First of all welcome to Experts Exchange.

This is true that you can only split healthy PST files into small sizes. But we have made certain updates in the algorithm of SysTools PST Splitter software. Now on ward's, it easily detects and split corrupted or inaccessible Outlook PST files. You can try the demo version of the software for free and check the result.  The best you can get with this software is that the resultant PST files will be in healthy state and you can easily access it anywhere.

I hope this will help you

Jerry FreyB2B Executive

To Repair and Split your PST file, I suggest you the technician version of Stellar Phoenix Outlook PST Repair. The software repairs the corrupt PST file and allows to split and compact PST. With this software you can even save the PST file in EML, MSG, RTF, HTML, PDF, DBX & MBOX formats and export the repaired PST directly in Office 365. Get the demo version of software from here:
There's no way to split a PST file if it's corrupted. No professional PST Splitter tool can really help you in this. If you want to split PST file, make sure it ain't corrupted. And if you want to split a corrupt PST file, you must repair it first. You can use the Inbox Repair tool (scanpst.exe) to repair PST file. But keep in the mind that the Inbox Repair tool may fail in a case of severe corruption. In such a situation, you should use a professional solution to repair PST file. And when you successfully repair PST file, then you can split it into two or multiple parts. I'm sharing a couple of articles here which might be helpful for you:

Topmost PST Repair Tools for Microsoft Outlook Users

Split PST File into Multiple Parts – Try Few Easy Manual Tricks

I hope the shared information would be helpful here.


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