A pst looks like it needs repairing however the pst file is 5 GB large. Everytime I click ok to fix the pst file after it does the CRC check, it crashed. Is there anyway to reduce the size of the PST file so the repair tool  wont crash?

You can split a large PST file by using Move To Folders option easily but this method doesn't work with Outlook 2010 You can also Archive the pst file, Here are the some steps mentioned in details to perform the task of reducing the size of PST file http://www.filerepairtools.com/tips/how-to-split-large-pst-file-safely/

Hello,<o:p></o:p>

As you want to repair your PST file but you cannot do so because of its larger size, then its not a big problem as you apply following things to your PST file in order to reduce its size,<o:p></o:p>

1. You can compact your PST file, which removes the white space & reduces the size of your PST file.
2. You can split your PST file.
3. Or else if all the above fails, then you can also try a tool to compact your PST file. The third party tools extract the attachments from all your mails & reduces its size effectively. Then you can easily run scanpst.exe to repair your file.

<o:p>Regards</o:p>

<o:p>Kelvin Howard</o:p>

You can easily split your large size PST file with the help of this user-friendly tool like http://www.split-pst.com  I have also used this software and i was really satisfied.

Use Outlook Express Repair Toolbox is absolutely Outlook DBX repair tool and efficient remedy against the corruption of email folders with DBX extension.

For more: https://www.dbxrepairtoolbox.com/

• Marked as answer by SamuelBar45 23 hours 22 minutes ago

You can reduce the size of the PST file either by compressing or splitting a PST file.In your case ,issue is corruption in the PST file.so you need to first repair it then apply any compression and splitting process on the repaired file.

If scanpst fails then you can try any third party repairing tool but they are not free at all.