(Fixed) messaging interface has caused an unknown error

Microsoft has introduced a very dynamic application i.e. MS Outlook in its Office suit. With the help of this application you can send or receive email without internet within a home domain. But sometimes using the application also gives use some error issue like “messaging interface has caused an unknown error” when you start Outlook and try to create or delete messages, emails, contacts etc. This is a common error issue but it may harm the computer components very badly so it is very important to get rid of this problem as soon as possible. You can use some manual process or you can also use Outlook PST Repair Tool to fix the error issue automatically.

Compatible with Outlook 2000, 2002, 2003, 2007, 2010, 2013 and supports Windows 8, 7 (32-bit/64-bit), Vista (32-bit/64-bit ), 2003, XP, 2000, NT4 (SP6).

Symptom –

You can see the prompting of the error message as follows;

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

Causes of “messaging interface has caused an unknown error” –

The error message comes to your computer due to the reason that if you are set the PST file as the default delivery location and forwarding the message using OST file. The error also comes if the message is modified after saved in the draft folder, if PST file is corrupt, if there is a virus issue, etc.

Solution –

Go through the following manual steps to get rid of the error problem:

  1. Open the Outlook.
  2. Right click on the folder list and in the context menu select properties.
  3. Click on the advance button.
  4. Select and click on the “allow upgrade to large tables.”
  5. Click on the OK and then again click on the OK.

By applying this manual method you will surely fix the problem of “messaging interface has caused an unknown error” but if not then you should download and use Outlook PST Repair Tool to fix the error problem automatically.

Compatible with Outlook 2000, 2002, 2003, 2007, 2010, 2013 and supports Windows 8, 7 (32-bit/64-bit), Vista (32-bit/64-bit ), 2003, XP, 2000, NT4 (SP6).

Outlook PST Repair Tool is the best tool that is specially designed to fix the error issue in Outlook. With the help of this tool you can repair the PST file corruption and optimize the performance of the MS Outlook as well.


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