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Is there a good utility to fix .pst files?

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  • Latest Post Latest Post by rproffitt

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Short answer for : start with the built-in Inbox Repair tool (ScanPST) and a good copy of the .pst, then move to safer recovery workflows before paying anyone. Microsoft documents how to run ScanPST (it must be run with Outlook closed, and it will offer to make a backup and may need multiple passes). ScanPST is installed with Outlook 2003; if you can’t find it use a file search for scanpst.exe. [Microsoft: How to repair a .pst with Inbox Repair]. (learn.microsoft.com)

Know the PST format and limits so you target the right fix. Outlook 2003 creates Unicode PSTs by default (much larger limits, ~20 GB by default), but IMAP/HTTP stores and very old PSTs can still be ANSI (2 GB limit) — oversize ANSI stores are a common corruption cause. If the file hit the format limit you’ll need to split/archive or move mail into a new Unicode store rather than repeatedly patching the one file. [PST format/limits reference]. (loc.gov)

If ScanPST cannot recover everything: work from a copy, create a new Outlook data file, and import recovered items into it (don’t overwrite the original). Try Outlook in safe mode (outlook.exe /safe) to rule out add-ins or AV locks. As a last resort, reputable commercial tools exist (DataNumen, Stellar and similar) — use their trial to preview recoverable items before purchase and avoid one-off “pstrepair” scam sites. ’s caution about shady offers is sensible. (datanumen.com)

Quick checklist (do each step on a copy of the .pst):

  • Close Outlook; copy the .pst to a safe folder.
  • Run the Inbox Repair tool (scanpst.exe) from the Office11 folder or the Common Files MSMAPI folder; repeat until no errors. (outlook-tips.net)
  • If issues remain, create a new data file in Outlook and import recovered items. (learn.microsoft.com)

If nothing above helps, note the file size/format and mention it when asking for help — that drives the right next step (truncate/split, third‑party recovery, or restore from backup).

Member Avatar for rproffitt

No. All the posts I read about this are spams and shills. Your best utility is the backup copy of the PST. This can be automated today very easily but if you see a reply with any pstrepair.com or similar, it's spam that will be a ripoff.

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