UPDATE: This method no longer works in newer versions.
Did you know there is an extra hidden tab in Windows Live Messenger Option dialog box? Its called "Add-ins". Its hidden by default. But there is a registry hack available to enable it.

Here is a step-by-step tutorial to enable it:
1. Type regedit in RUN dialog box and press Enter. Now goto:
HKEY_CURRENT_USER\Software\Microsoft\MSNMessenger
2. In right-side pane, create a new DWORD value and give it name "AddInFeatureEnabled" and set its value to 1
3. That's it. Now open Windows Live Messenger and go to "Tools -> Options" and you'll see a new tab "Add-ins".
This article was posted by VG in following section: Windows Live.
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chris
I tried this in both Vista and windows 7 and neither worked. am I doing something wrong?
Chris
rocky
hi....i have windows live messenger 9 installed....and its not showing add-in tab in options under tools.
i have tried the method explained by you...but in regedit the mentioned value ("AddInFeatureEnabled")
already exist...i am not able to resolve the problem....as i have to add automatic translator to windows
live messenger...
regards
Rocky
Tanner Sack
I'm unsure if the new WLM has disabled this feature or whatever, but it certainly not working for me. I did everything correctly, but with no results.
I have WLM 7 I think; I also have Windows Plus! Live. I really wanna test out some scripts I'm writing for WLM but I need this feature.
HELP
jooseyjay
I opened regedit, and there was already a DWORD with a value of 1 in the MSNmessenger directory, and it still doesn't show the add-ins tab.
I'm on Vista 64-bit, do I need to make it a QWORD?
sajith
Hi vishal;
I did what you said,but still its not showing in the options. I dont know the version its showing 14.0.8089.726. please help.
Knx
Does this work on x64 and WLM 2011? Can you post a tutorial teaching to do it on WLM 2011?