Iphone

Question: One of our users (Windows XP Pro & Outlook 2003) came across an issue that when he attempts to access the address book he receives the following error message:

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

All other functionality appears to be fine within Outlook. Only accessing the address book seems to be at issue

Reading through the articles here, I initially tried to create a new Exchange profile, yet still received the same error message. Then I started Outlook from the Run prompt using 'Outlook /safe' and I was successful in opening up the address book.

So I am now wondering what I can do for a permanent fix so we do not have to run Outlook in safe mode.

Iphone

Since you were able to access your address book in Safe Mode, an addin is likely the cause. Go to Tools > Options > Other > Advanced Options > Addin Manager or COMM/Addins and disable the addins.

jacksymond07

Run Inbox repair tool. Then create a new pst file .It will help you to repair corrupt pst file. You can take help form my blog
Repair Outlook PST: Messaging Interface Error.

If your pst file is badly damaged you can take help of outlook pst repair software. This software is easy to use and provides robust recovery solution.