How to Run Multiple Yahoo! Messengers and Login to Multi Y!M Accounts
For Yahoo! Messenger with Voice 8 users, it’s now possible to run multiple instances of Yahoo! Messengers (polygamy feature) and log into multiple Y!Msgr accounts with just a simple registry hack. So if you need to open and log-in multiple Yahoo! Messenger accounts as you have a few Yahoo! ID or various other reason, just use the small registry registration file below that once click, will modify and merge the registry setting required to run and execute multiple Yahoo! Messengers at the same time on a computer.
Download ym8multi.zip, extract it and run “ym8multi.reg” contained inside the archive. Once the registry is patched, you can now starting and running multi Yahoo! Messenger with different login or Yahoo! ID accounts. If you want to uninstall the patch/hack, download the ym8multi_uninst.zip uninstaller which contains ym8multi_uninst.reg. Once double click on this uninstaller registration registry value file, it will edit the registry value and set it to disable the ability for Y!M 8 to launch multiple copy of instances.

If you prefer to edit and change the registry setting yourself manually, without using the above registry registration file, simply launch the registry editor (type regedit at Run command), and navigate to the following registry branch:
HKEY_CURRENT_USER\Software\yahoo\pager\Test
Then, on the right pane, right click on the registry editor and select “New”, then create a new DWORD registry value. Name the new registry key as Plural, and assign it the value of 1 (decimal). If some case, the value of 2 should also works. To disable or disallow multiple instance of Yahoo Messengers, simply change and set the “Plural” registry key’s value to 0, or delete the “Plural” key.
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October 20th, 2009 02:02
what to do after altering the registry? how will i know that i can log multiple??? pls provide detailed intraction after the process of reg edit.
thanks
September 9th, 2009 17:47
i upgrade to 10 beta version, but more occured i cannot login to the 2nd ym.. any suggest?
August 23rd, 2009 18:13
thanks a lot…this really helped me..
July 29th, 2009 08:47
Thank you so much. It works fine..:)
July 17th, 2009 09:26
but why isn’t do?
July 5th, 2009 23:09
hey i can open 2 instances but only 1 is logged in at a tyme …..any help ??
July 2nd, 2009 17:39
wao …….. its working, thanks
June 26th, 2009 14:36
Thanx a million,it worked perfectly.
June 21st, 2009 23:01
thanx yaar mujhe pata tha ki yeh kaise hota hai but bhul gaya tha thnx yaar……..n best of luck for your future
May 25th, 2009 11:51
it really works!!!! thanks so much!!!!
May 21st, 2009 00:17
thanx bro its working
May 13th, 2009 18:55
>>>it dosn’t work on yahoo messenger 7.5:(<<< Then upgrade to 9.0
May 9th, 2009 17:23
it dosn’t work on yahoo messenger 7.5:(
March 28th, 2009 14:24
hello buddy… thanks for this! it really helps me.. thanks bro! i really appreciated it…. hope to share something new to you guys soon…
March 14th, 2009 23:59
atrain, thank u for this: atrain
February 27th, 2009 14:39
28
no need to download anything simple steps below:
Go to START->RUN-> Type ‘regedit’ and press ENTER.
Then navigate to ‘HKEY_CURRENT_USER\Software\Yahoo\Pager\Test’
Now in the right pane right click New->DOWRD Value. Name it as ‘Plural’.
Now Double click the the Plural DWORD you created & set the value to 1
March 2nd, 2009 19:57
tnx
February 27th, 2009 14:39
no need to download anything simple steps below:
Go to START->RUN-> Type ‘regedit’ and press ENTER.
Then navigate to ‘HKEY_CURRENT_USER\Software\Yahoo\Pager\Test’
Now in the right pane right click New->DOWRD Value. Name it as ‘Plural’.
Now Double click the the Plural DWORD you created & set the value to 1
February 13th, 2009 00:01
Thanks…
January 7th, 2009 07:30
. hi