Use ScanPST.exe (Inbox Repair Tool):
    ScanPST.exe is a built-in tool provided by Microsoft to repair corrupted Outlook PST files.
    Locate the ScanPST.exe tool on your system. Its default location varies based on your Outlook version and installation directory.
    Run the ScanPST.exe tool and select the corrupted PST file you want to repair.
    Click on the "Start" button to initiate the scanning and repair process.
    Once the repair process is complete, review the scan results and follow any prompts to repair the errors found in the PST file.

Use Third-Party PST Repair Software:
    If ScanPST.exe fails to repair the corrupted PST file or if you're looking for more advanced features, you can opt for third-party PST repair software.
    There are several reputable third-party tools available, such as Kernel for Outlook PST Repair, and Recoveryfix for Outlook PST Repair. https://www.nucleustechnologies.com/outlook-pst-repair.html
    Download and install the chosen PST repair software on your system.
    Launch the software and follow the on-screen instructions to select the corrupted PST file and initiate the repair process.
    Once the repair process is complete, review the repaired PST file and ensure that all your data is intact.

Use Outlook's Import/Export Feature:
    If you're unable to repair the corrupted PST file directly, you can create a new PST file and then import the data from the corrupted PST file into the new one.
    Open Microsoft Outlook and go to File > Open & Export > Import/Export.
    Select "Import from another program or file" and click Next.
    Choose "Outlook Data File (.pst)" and click Next.
    Select the corrupted PST file you want to import data from and follow the prompts to complete the import process.
    Once the import process is complete, you'll have a new PST file with the imported data from the corrupted PST file.

Use OST to PST Conversion (for Exchange users):
    If you're using Outlook with Exchange Server and have an OST file, you can convert the OST file to PST format using third-party OST to PST conversion software.
    Once the OST file is converted to PST format, you can open the PST file in Outlook and access your data.

For more information about the software: https://www.nucleustechnologies.com/outlook-pst-repair.html