Enable Multiple Instances of Windows Live Messenger for Multi Logins
So far until Windows Live Messenger 2009, all versions of MSN Messenger and Windows Live Messenger (WLM) does not support running multiple instances of the program. It means that at any one time, only one Windows Live Messenger program is allowed to be launched, effectively restricts WLM users to login to just not more than 1 account at one time.
In Windows Live Messenger 2009 (current version installable through Windows Live Essentials), Microsoft has added support for running multiple instances of Windows Live Messenger, allowing user to sign in to multi-login and log on to multiple accounts. The helper external third party programs such as MultiLive or MultiMSN no longer required.
The support for multi-WLM is not enabled by default, but can be easily turned on and enable with registry hack.
- Run Registry Editor (regedit).
- Navigate to the following registry key:
KEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Live\Messenge
For 64-bit (x64) OS, go to following registry branch instead:
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Live\Messenger
- In the right pane, right click on any blank space, select New on context menu, and then click on DWORD (32-bit) Value.
- Name the new registry value entry as MultipleInstances.
- Modify the MultipleInstances and set its value data as 1.
- Start as many Windows Live Messenger windows as you want from Start Menu.

Note that you need a different Windows Live account (MSN Passport user name) and password in order to run two or more instances of Windows Live Messenger. If you have set automatically login upon running WLMessenger, an error may pop up when additional instance is run if your login is still signed in when new instance opening. Just change to your second WL Messenger login.
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August 2nd, 2009 21:07
[...] article here. Share and [...]
July 10th, 2009 00:18
Great info!!
Thanks a lot.
July 9th, 2009 21:14
I wrote a program that can do this automatically for you:
http://msgshit.com/downloads/680/MultiLive-2009.html
July 4th, 2009 04:31
thanksssssssssssss for the REGEDIT trick..! hahaha
June 20th, 2009 19:48
[...] 以上的所有步骤,不是我凭空想出来的,要感谢google 这么能干,帮我找到这个这么能干的仁兄写的文章,原文是英文版本,出自此处。 [...]
June 12th, 2009 12:45
great man..luv u
June 11th, 2009 20:12
it rocks…. thanks buddy…
May 24th, 2009 12:18
Hey thanks dude !
It Really Works
You Rocks
May 12th, 2009 17:58
its
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Live\Messenger
for XP
not
KEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Live\Messenge
and it works great.
May 11th, 2009 00:04
hey guys , it doesn’t work on vista
anyone knows how to make it work
thanks
April 29th, 2009 15:04
thanx great job. well done. Can we do this on windows 2000 professional with msn messenger 7.0 installed.
April 17th, 2009 06:53
man u r really gret………thanx
March 30th, 2009 22:25
Thanks a lot! It worked and I needed this badly for the new MSN Messenger! Awesome tip
March 26th, 2009 13:47
Just wanted to updated, i had looked into it properly in my free time and was able to get it done. and its now working perfect on my XP Pro.
Thanks for your great effort, it was a great piece of education.
Appreciate it.
Good luck for more to come
March 26th, 2009 05:04
working fine on my XP Pro
March 25th, 2009 17:45
using Xp. and cannot see the Windows Live in KEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
how i can see that ? until i see that cannot proceed ahead.
if there is still the 3rd party free patch or soft kind list so that i can use that either.
March 25th, 2009 05:05
worked on my Business 32 bit
March 25th, 2009 05:04
worked a charm
thank you
March 25th, 2009 03:29
thanks
March 23rd, 2009 03:28
Doesn’t work on Vista Business 32-bit
March 17th, 2009 18:53
Thank u
it works :d
March 6th, 2009 07:11
it doesn’t work
January 30th, 2009 20:28
Superb
Very nice technique
Keep it up
January 12th, 2009 12:45
[...] The third party program to enable multiple MSN Messnger login is kind of obsolete. Instead, use the MultipleInstances hack to turn of multiple instances WL Messenger support to login to many accounts. [...]
January 12th, 2009 12:41
[...] Third party program is no longer needed for Windows Live Messenger 2009 (version 14) and above. There is a registry hack to run multiple instances of MSN Windows Live Messenger. [...]