UPDATE:
One fix for both 2009 & 2010 TESTED
Works 🙂

Some of you other Kiwi’s out there are probably experiencing this very problem!

I know some of my customers are.

The main issue is when you are using Trend Micro Antivirus and Xtra/Yahoo Webmail.

You will try to download attachments, You get as far as Xtras online Trend Scanner running and then when you hit the “Download Attachments” button your browser will not take over and download the file for you instead it sits there like a stunned mullet.

After 2/3 hours on the Phone to Trend micro I have a solution which should fix the problem for you.

So here it goes! TechKiwi is off to a flying start!

Trend Fix:
1. Use the Trend updater to make sure your updates are to the latest version.

2. Quit all components using TISTOOL.
   Go to the Start -> All Programs -> Trend Micro Folder -> Trend Micro Support Diagnostic Toolkit.
   Click on Quit All Components. 

3. MOVE the TmphHttp.dll file in the C:\Program Files\Trend Micro\Internet Security folder to your desktop (or delete it if your super game)

4. Go to the Start -> All Programs -> Trend Micro Folder -> Trend Micro Support Diagnostic Toolkit.
   Click on Start All Components.
5. Reboot machine and test.

This fix should work. I have tried it a few times with great sucess :)

Feedback on this topic is appreciated

Cheers
Ben