Wondershare Repairit
Email Repair

Perfectly repair and recover corrupted Outlook PST & OST files.

  • Fix all Outlook Email issues on Windows and Mac in various scenarios.
  • One trick to fix corrupted PST & OST files in Outlook.
  • Restore Outlook Emails deleted for a long time and extract important Email messages, folders, calendars, etc.
  • Perfectly compatible with Windows & Mac devices.
email repair

Ways to Fix "The Messaging Interface Has Returned An Unknown Error"

It is frequently observed Microsoft office pops up peculiar messages of error each time Personal Storage Table (PST) file is corrupted. The PST files might be exposed to damages largely because of corruption resulted from infection of viruses or even any errors in software. Furthermore, when these PST files exceed the 2 GB limit in MS Outlook 2002 or even earlier versions they become exposed to corruption.

This article discusses detailed steps about how to fix the "messaging interface has returned an unknown error" issues in your MS outlook and the practical and effective solutions explained apply to MS Outlook 2016,2013,2007 and 2010.

This "the messaging interface has returned an unknown error" problem usually occurs when the user of the MS Outlook tries deleting or adding a contact, accessing and reading a new mail, creating or deleting an item on a calendar, or even getting rid of an email. This unwanted situation is normally caused by:

  • The existence of any form of corruption in the PST files.
  • Some internal problems with the MS Outlook messaging user interface.

The simplest solution when such errors pop up is to restart the MS Outlook, but then again this solution only works when the error is due to messaging interface problems. And thus if the error is due to there being corruption in the PST files, it becomes a severe case that needs special and detailed solutions.

Repair Your PST File with Outlook PST Repair Tool

Apart from using the Inbox Repair Tool to repair your PST file, you also can use the Outlook PST repair tool. Most Outlook PST repair tools help in repairing corrupted MS Outlook data (PST) files and also restoring messages even the ones already deleted. Some of these tools are the best for recovering PST data and folders or messages.

The Outlook PST repair tool is preferable to inbox repair tool because they do more than just fix the "messaging interface has returned an unknown error" problem (which is our main focus) in the MS Outlook but also performs other functions such as repairing damaged PST files; recovering deleted files, messages and even folders; repairing large sized PST files; saving repaired items to a whole new and healthy PST files; recovering properties of emails such as Bcc, Cc, date, from, to, etc; and supporting various versions of MS Outlook versions among other effective solutions.

How To Repair Corrupt PST File With Outlook Repair Tool

Wondershare Repairit for Email

The Outlook repair tool I highly recommend is Wondershare Repairit for Email. It is a reliable, convenient, and the most widely used tools in repairing and fixing errors in the MS Outlook. It comes with vast functions and features that are very useful to its users.

This tool performs more than fixing the "messaging interface has returned an unknown error" problems.

  • Repair damaged PST & OST Files in Outlook in all Email corruption scenarios, such as hard disk crashes & bad sectors, virus attacks & tojan horse, outlook corruption & malfunctions, improper shutdown procedure, etc.

  • Restore Outlook Emails deleted for a long time and extract the Email messages, folders, calendars, etc. within seconds.

  • Repair corrupted Emails and restore deleted Emails with a 100% success rate.

  • Repair Emails in bathes without size limits and support to preview all of them before saving.

  • Compatible with Windows 7/8/8.1/10/11, Windows Server 2012/2016/2019, and MacOS X 10.11~ MacOS 12 (Monterey).

2. Steps to Repair Corrupt PST Files Using Repairit Outlook Repair Tool

The following step by step tutorials will help you fix the corrupt PST files but first, you need to download and install the program. After you have installed it, run it on your computer and keenly follow the steps.

Step 1: To begin the corrupt PST file repairing process, you need to click the "Select File" options on the program.

repair corrupt PST files step 1

Step 2: You then need to select all the corrupt PST files that need to be repaired and click "Repair" to begin the process of scanning the selected files.

repair corrupt PST files step 2

Step 3: On this step, the selected PST files have all been repaired and they just need to be saved. You, therefore, need to click on any item of your choice from the tree that appears on the left of the screen

repair corrupt PST files step 3

It is quite impossible to avoid or prevent corruption in MS Outlook, however, you can avoid troubles that these corruption cases. Due to complexity in fixing the "messaging interface has returned an unknown error" without the use of the PST repair tools, it is recommended that you get a trusted and reliable tool for purposes of efficiency in your MS Outlook activities.

Therefore, You need to get Wondershare Repairit for Email as there are not so many software that can match what this repair tool can do. It has a remarkable long list of features and functions for your Outlook issues.