Microsoft Outlook is undoubtedly the most widely-used desktop email client, empowering hundreds of millions of users worldwide to manage email, calendars, contacts, tasks and more. However, when Outlook data gets corrupted or inaccessible, it can bring your productivity to a grinding halt.
This is where Stellar Repair for Outlook comes in. As a complete solution for restoring damaged Outlook personal folder (PST) files and Exchange Offline Storage (OST) files, Stellar Repair for Outlook gets your email back on track quickly when problems arise.
In this detailed guide, we’ll cover everything you need to know about using Stellar Repair for Outlook to recover your precious Outlook data.

Overview of Stellar Repair for Outlook
Stellar Repair for Outlook is designed specifically to repair corrupt, damaged, or inaccessible Outlook data files like PST and OST files. It uses deep scanning technology to fix errors in the file structure itself and reconstruct mailboxes so that emails, calendar items, contacts, notes and more become accessible again in Outlook.
Key capabilities of Stellar Repair for Outlook include:
- Fixes all kinds of errors like corruption, damage, password protection, etc. in PST and OST files
- Scans for errors and repairs file header, indices, messages, attachments, calendars, etc.
- Supports Outlook 2021, 2019, 2016, 2013, 2010, 2007, 2003
- Suitable for large PST files exceeding multiple GB in size
- Preserves original PST/OST file structure and mailbox folders
- Exports repaired files or saves individual recovered items like emails
- Provides preview of recoverable items before saving
- Available for both Windows and Mac Outlook clients
This powerful inbox repair software gives you the best chance of recovering your Outlook data after a crash, corruption, accidental deletion or similar issues.
When To Use Stellar Repair for Outlook
Here are common situations where running Stellar Repair for Outlook can rescue your important Outlook files and data:
- After a virus/malware attack that has corrupted Outlook data files
- When Outlook gives errors like “File is in use” or “File is corrupted”
- If Outlook crashes on launch or when accessing emails/folders
- When PST file exceeds max size limit and gets damaged
- After sudden PC shutdown, power loss, or application crashes
- If PST file password is lost or unknown preventing access
- Accidental deletion or overwrite of Outlook PST files
- After migration, upgrade or reinstallation of Outlook itself
- Third-party tool unable to repair severely corrupted PST file
- Ost file disconnects or becomes inaccessible for any reason

The advanced repair algorithms in Stellar Repair for Outlook provide the best chance of recovering Outlook items in all these scenarios when other methods may fail.
Step-By-Step Guide to Repairing Outlook Data Files
Repairing a corrupted or damaged Outlook PST or OST file with Stellar Repair for Outlook just takes a few simple steps:
1. Select File – Launch Stellar Repair for Outlook and select the problematic PST or OST file to scan and repair from its location.
2. Scan File – The software will begin scanning the selected file to identify errors like corruption, missing data, etc.
3. Preview Items – Once scanning is complete, you can preview recoverable Outlook items like emails before repairing to sample what data is retrievable.
4. Repair File – Choose “Repair” to begin the process of rebuilding the file structure and recovering all accessible Outlook data.
5. Save Repaired File – When repair is finished, save the rebuilt PST or OST file to any location or export just recovered items.

That’s all it takes to salvage your important emails, contacts, calendar events and other Outlook data! Advanced tools like Split and Compact further enhancement options.
Stellar Repair for Outlook FAQs
Here are answers to some frequently asked questions about Stellar Repair for Outlook:
Does it work for both PST and OST files?
Yes, Stellar Repair can fix errors and recover data from both Outlook PST personal folder files and OST offline folder files.
What types of damage can it repair?
Stellar Repair can fix all sorts of PST/OST file damage like corruption, missing headers and indexes, Access Denied errors, exceeding size limits, virus attacks and more.
Can it recover permanently deleted emails?
If you have accidentally deleted emails or empty the Deleted Items folder, Stellar Repair can recover them as long as the PST file itself has not been deleted.
Does Stellar Repair keep folder structure intact?
Yes, Stellar Repair preserves the original PST/OST file structure including all mailbox folders, subfolders, etc. when repairing.
Can it repair large PST files?
Absolutely. Stellar Repair works reliably on PST files of any size from a few megabytes up to multiple gigabytes in size.
How long does a repair take?
It depends on PST file size but most repairs complete within 10-20 minutes. Larger files may take a few hours. You can continue using Outlook during the process.
What Outlook and Windows versions are supported?
Stellar Repair supports Outlook 2019, 2016, 2013, 2010, 2007 and is compatible with the latest Windows 11, 10, 8 and 7.
Is technical skill required to use it?
No, Stellar Repair has an intuitive and user-friendly interface. Just launch, select your PST/OST, scan, repair, save. No advanced IT skills needed.
Is there any risk of data loss?
Stellar Repair is designed to safely recover data. However, we recommend first backup the PST/OST before repair as a precaution.
Does it work on Mac Outlook for PST repair?
Yes, Stellar Repair can repair PST files for Outlook for Mac to recover damaged data.
Stellar Repair for Outlook provides the most advanced and reliable way for both Windows and Mac users to get Outlook data back after it gets lost or corrupted. If your Outlook inbox is experiencing crashes, errors, corruption or other problems, download Stellar Repair for Outlook today and get your email back on track fast!