If the PST file cannot be repaired by Scanpst.exe, it usually means the corruption is more severe than what Outlookâs built-in repair tool can handle. ScanPST works only for minor index-level issues, so when the file is oversized, deeply corrupted, or structurally damaged, the utility fails to rebuild it. In such cases, Outlook continues to crash, freeze, or refuse to open the mailbox. The most effective solution is to
repair PST file without Scanpst using a dedicated advanced tool like
Advik PST Repair Tool. This software can fix heavily corrupted PST files, recover emails, contacts, calendars, and restore them without data loss. It also creates a fresh, healthy PST file that you can easily import back into Outlook.