Stellar Repair for Outlook PST

What is included in Stellar Repair for Outlook PST?

PST Repair – Fixes corrupt PST files of any size
Full Recovery – Restores emails, attachments, contacts, calendars, tasks, notes
Deleted Items – Recovers accidentally deleted mailbox items, marked red
Save Formats – Exports to PST, MSG, EML, RTF, HTML, PDF
Core Capacity – Repairs PST files without any size limit
Important – Outlook must be installed to save repairs

What are the main benefits of Stellar Repair for Outlook PST?

Stellar Repair for Outlook is a Windows tool that rebuilds corrupt or oversized PST files when Outlook's built-in ScanPST.exe fails. It restores emails, attachments, contacts, calendars, tasks, notes, and journals to a new PST while keeping the original folder hierarchy intact.

Non-Destructive – Works on a copy, original PST stays safe
Preview First – Inspect recoverable items before buying a license
Beats ScanPST – Handles severe corruption ScanPST.exe cannot fix
Selective Saving – Filter by date, sender, or folder
Resume Anytime – Save scan results and finish repairs later
Batch Repair – Repairs multiple PST files in one run

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What does Stellar Repair for Outlook do?

It repairs corrupt or damaged Outlook PST files and rebuilds the mailbox into a new, usable PST. The tool recovers emails, attachments, contacts, calendars, tasks, notes, and journals while preserving the original folder structure, and it handles encrypted or password-protected PST files without removing the protection first. There is no file-size limit, so it can process PSTs of 50 GB or more that often defeat lighter utilities. Because it reads the source file in read-only mode and writes to a copy, your damaged PST is never altered during the process.

When should you use it instead of Outlook's built-in ScanPST.exe?

Use it when ScanPST.exe freezes, crashes, or cannot finish on a large or severely corrupted file. Microsoft's Inbox Repair Tool edits the PST in place and silently removes any items it considers unreadable, which can cause permanent data loss on a heavily damaged file. Stellar instead works on a copy and lets you preview every recoverable item before saving, so you confirm what survived before committing. This makes it the safer route for oversized archives or PSTs damaged by abrupt shutdowns and virus infections.

Do you need Microsoft Outlook installed to use it?

Yes. A licensed Microsoft Outlook installation is required to save the repaired data back to a new PST file, although scanning and previewing work in the free trial without a license. The application is Windows-only and runs on 64-bit Windows 11, 10, 8.1, and 8, with no native macOS or Linux build. Mac users would need a Windows virtual machine to run it. Plan for this before purchasing if your recovery machine does not already have Outlook set up.

What is the difference between the Professional, Technician, and Toolkit editions?

All three editions repair PST files, recover deleted items, and save to PST, EML, MSG, RTF, HTML, and PDF; the higher tiers add migration and conversion tools. Professional covers repair and selective saving for an individual user. Technician adds MBOX output, direct export of repaired mail to Microsoft 365 or Live Exchange, and the ability to split or compact large PSTs. Toolkit builds on that with OST-to-PST conversion, merging multiple PST files, and Outlook password recovery, which suits IT teams managing many data files.

Which Outlook versions and file types does it support?

It repairs PST files created by Outlook 2003 through Microsoft 365, covering 2021, 2019, 2016, 2013, 2010, and 2007, in both ANSI and Unicode formats. The base product targets PST files specifically; it does not repair server-side Exchange (EDB) databases, which require a separate Stellar Exchange tool. Direct OST-to-PST conversion is reserved for the Toolkit edition, so a damaged OST is not covered by Professional. Knowing this prevents buying the wrong edition when the real source file is an orphaned OST rather than a PST.

What should you check before choosing Stellar Repair for Outlook?

Confirm that your file is a PST and that Microsoft Outlook is installed on the recovery machine, since saving requires both. If you need to push recovered mail straight into Microsoft 365 or Live Exchange, or split and compact large PSTs, choose Technician rather than Professional. For OST conversion, merging several PSTs, or recovering a lost Outlook password, only the Toolkit edition includes those tools. Matching the edition to the task up front avoids paying for capabilities the base Professional license does not contain.

Frequently asked questions about Stellar Repair for Outlook PST

How do I know if my PST file is corrupt?

Outlook usually signals PST corruption through repeated freezing or crashes and errors such as "Errors have been detected in the file" or "Outlook.pst cannot be accessed – 0x80040116". When these appear, the data file is damaged and normal access keeps failing. Running the tool scans the file and previews every recoverable item, so you can confirm the extent of the damage before saving anything.

Can it repair password-protected or encrypted PST files?

Yes. Stellar Repair for Outlook repairs encrypted and password-protected PST files without requiring you to strip the protection first. This helps when a locked archive becomes corrupt and Outlook can no longer open it, because the tool reads and rebuilds the mailbox while preserving the original folder hierarchy.