It has been frequently observed that Outlook starts giving peculiar error messages after the corruption of your personal storage table (PST) file. The PST file may become damaged due to logical corruption as a result of a virus infection or any software error. In addition, when this file crosses the predefined size limit of 2 GB in MS Outlook 2002 and earlier versions, it becomes susceptible to corruption. As a consequence, all your valuable items in the PST file may become inaccessible. You can use the Inbox repair tool to fix the issue of logical corruption. If the tool fails to repair corruption, you should go for PST file recovery through a reliable third-party utility.

Consider a real time scenario. Suppose you attempt to forward a message in Outlook 2000 SR-1, but fail to do so. Additionally, you receive the below given error on your screen:

''The messaging interface has returned an unknown error. If the problem persists, restart Outlook.''

Cause:

The above error is caused if any one of the below conditions are true:

• - You have set an Outlook PST file as your default delivery location or you are forwarding the message using an OST file.
  

• - The forwarded message is in Rich Text format (RTF) and contains an attachment.
  
• - You have waited for three minutes or have clicked 'Save' on the 'File' menu to save the message in the 'Drafts' folder.
  
• - The message has been modified after being saved in the 'Drafts' folder.
  
• - It could be possible that the Outlook PST file is corrupt.
  

Solution:

In order to resolve the issue, a suitable hotfix has been provided by Microsoft. Download the hotfix specific to this problem from the Microsoft's website.

However, if you are still facing the same issue, then it means the Outlook PST file is corrupt or damaged. At this stage, you can use the inbuilt Inbox repair tool. If this tool fails to repair PST file corruption, you should take help of competent PST repair software.

These third-party tools are proficient in repairing damaged PST files and restoring all Outlook mail objects, such as emails, contacts, attachments, appointments, journals, calendar-entries, etc. They use robust mechanisms to allow you perform a selective recovery of Outlook PST components.

Outlook PST Repair is a result-oriented tool that enables you to perform Outlook recovery facilely and conveniently. The tool restores all your precious data to a new Outlook PST file and supports MS Outlook 2016, 2013, 2010, 2007, 2003, 2002, and 2000.

See Also:

- Outlook Errors - Common Error Messages in Microsoft Outlook
- Common Reasons of MS Outlook Corruption and How to Fix them ?
- How to fix Data error (Cyclic redundancy check) in MS Outlook
- Now Utilities Available to Recover Mail Items From OST File
- How to Fix "Cannot Move the Items. The Folder is full." Error in MS Outlook ?