The Best Way to Repair Corrupted OST File

If your OST file gets corrupted, Outlook might freeze or show error messages. Here are a few quick steps to fix corrupted OST file manually -
  1. Run Outlook in Safe Mode – Start Outlook with the /safe command to skip add-ins that may be causing issues.
  2. Create a New Profile – A fresh Outlook profile with a new OST file often fixes corruption.
  3. Clear Offline Items – Right-click a folder → Properties → Clear Offline Items, then let Outlook re-sync with the server.
If these don’t work

Manual fixes help with small problems, but they may not fix a badly damaged OST. In that case, you can use the BLR OST to PST Converter Tool, which recovers all mailbox data (emails, attachments, contacts, calendars, etc.) and exports it safely into a PST file for Outlook.
 

Online OST to PST Converter – Convert OST Files Across Any Device or Operating System​

With an online OST to PST converter, it's possible to transfer your Outlook data from one format to another using any device and any operating system—no need for software installation.

Here's how to convert your OST file to PST online:
  1. Click the “Select File” button and upload your .ost file from your device.
  2. Enter your email address to receive the converted file.
  3. Complete the CAPTCHA by entering the text shown in the image.
  4. Click on “Next Step” to begin the conversion process.
  5. Once the conversion is complete, download your PST file with the extracted data.
This method offers a convenient, cross-platform solution for quick OST to PST conversions—ideal for users who need flexibility and simplicity without installing additional software.
 

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The best way to repair corrupted OST files easily. Try the WholeClear OST Converter Software, which is a professional solution for all users; even non-technical users can easily use it. OST files can be converted to other formats, including EML, PST, MBOX, and MSG. It works with all versions of Outlook and Windows OS. OST files can be easily repaired and converted to other file formats without losing data. Furthermore, users can try it out for free using the sample version. This safe and secure approach for converting OST files to PST and other formats will save you time.
 
When an Outlook OST file becomes corrupted or inaccessible, it can prevent you from opening your mailbox or syncing data with the Exchange server. The built-in ScanOST or ScanPST tools can sometimes help, but they often fail when the corruption is severe or the OST file is too large.

In such cases, the most reliable option is to use a dedicated recovery solution like EdbMails OST to PST Converter. It not only repairs corrupted OST files but also helps recover every mailbox item — emails, attachments, contacts, calendars, and notes — while maintaining the original folder hierarchy.

Key Advantages of using EdbMails:​

  • Repairs and recovers corrupted or orphaned OST files without data loss.
  • Restores deleted emails and folders that are no longer visible in Outlook.
  • Supports encrypted and password-protected OST files.
  • Exports repaired data to PST format, which can be easily opened in Outlook.
  • Optionally migrates data directly to Office 365 or Live Exchange.
The process is simple:
  1. Open EdbMails OST to PST Converter.
  2. Select the corrupted OST file.
  3. Preview the recovered mailbox data.
  4. Export to PST or migrate directly to your target server.
This method ensures a complete and safe recovery, even for severely damaged OST files. You can try the free version of EdbMails to verify the repair results before performing a full recovery.
 
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The MailsDaddy OST to PST Converter provides a reliable platform to perform seamless OST to PST conversion while maintaining complete data accuracy. It allows users to recover OST files from damaged or inaccessible OST databases and convert them into usable PST format without Outlook dependency. The software supports exporting OST data into PST, MSG, MBOX, EML, RTF, and HTML formats. It offers features like batch conversion, PST splitting for large mailboxes, and selective export options to streamline the process.
Users can preview all mailbox items, including emails, contacts, calendars, and attachments, before exporting. It maintains original folder hierarchy and metadata during conversion. Additionally, the tool enables direct migration to Office 365 and Live Exchange environments. With its easy-to-use interface and advanced recovery engine, this OST to PST Converter simplifies data recovery and migration for both individuals and IT administrators.

Download Free Demo: Recover Corrupted OST Files
 
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