Methods to repair PST files in 2025

knowledgekit

Outlook applies a limitation on the size of the PST file, which is 50 GB in the latest versions of Outlook. That is the most common issue due to a PST file getting corrupted. Users must repair PST file as it is risky for other data if they do not fix corrupt PST files. This task can be done by using a manual or professional solution. The manual trick is only capable of repairing minor corruption in the Outlook PST files. Moreover, users require technical hands to learn the entire procedure to complete this task manually. Therefore, you can try professional tool Shoviv Outlook PST Repair which easily repairs corrupt PST files and recovers complete data such as emails, contacts, calendars, tasks, etc. This software allows moving PST files directly into the Office 365 and Live Exchange Server mailboxes. Users can set the size for the resultant PST file per their requirements using its splitter option. It is easy for users to repair Outlook 365 PST files as there is no requirement for the technical skills to handle the tool. Users can use this software to recover hardly deleted items of the Outlook PST files. It offers a user-oriented GUI, so all users can repair PST file using this professional tool.

Try its free evaluation version to check the compatibility of the software.

sophieedwards10

PST file corruption is a very common issue especially once the file gets close to the size limit. Before attempting any repair always create a backup copy first to avoid losing recoverable data.
Microsoft's built-in ScanPST tool works for minor corruption but has limitations with severely damaged files. I found a helpful resource called How to Repair PST File in Outlook: Complete Guide [2026] which covers both manual and professional repair methods in detail and is worth reading before you start.
A couple of tips that helped me personally:

Keep your PST file size below 40 GB even though the limit is 50 GB
Use Outlook's archive feature regularly to keep file sizes manageable

Hope this helps!