I did knew that running multiple instances of same executable is possible and it is just blocked from client side rather server side. Then I saw over A3 Ultimate, where developers have already enabled multiple instances of A3 out of the box and I wish same will be done here at A3 India. Until then we are on our own.
Guess what, the way to run A3 India Client multiple instances over on same PC without creating multiple users is possible now!! Yay!!
Yes, NO Two PCs, No multiple windows user account creations, No Sandboxie or any other virtualization tools required.
Method 1: Long & complicated but safe!!
Step 1: Download Process Explorer From Microsoft Site [http://technet.microsoft.com/en-us/sysi ... 96653.aspx] (One time work)
Step 2: Extract the content of the zip file!
Step 3: Start first instance of A3 India (must be at login screen).
Step 4: Now run Process Explorer (ProcExp.exe)
Step 5: Now under File menu click on “Show Details for All Process”.

Step 6: Under Process list select A3Client.exe

Step 7: Scroll the lower handle pan and locate following line,

Step 8: Right click on that line and click on “Close Handle” and select “Yes” on Process Explorer Warning message.
That’s it. Now you can start another A3 instance without any issue just like you do it regularly.
The above steps needs to be repeated every time you start a new instance of A3.
Continue to read if you want more sophisticated way…
Method 2: Readymade Tool – A3-unlocker.
Here I have coded small executable (more of borrowed code) that will perform above steps with just one click. Disadvantages? my own code and you may argue that it may have backdoor or keyloggger or virus blah blah.. use it if you trust me !!!
1. Download A3-unlocker.exe from here - https://mega.co.nz/#!io81xRqK!80ijY_Ee8 ... Z-7UqnZpwI
Alternate Link - https://dl.dropboxusercontent.com/u/367 ... locker.exe
2. Every time you run A3 client (first instance must be at login screen or already logged in), simply execute above utility with “Run As Administrator mode”.

3. That’s it. Do keep in mind you must run this exe every time you run a A3 client and want to start one more instance.

If A3 Client is not running you will get following error message,

If A3-Unlocker is ran without admin mode you will see below error message,

If you’re skeptic about executable, here is the source code - http://pastebin.com/4JjeeWxE. Those of you who understands C# can read the code and those we can’t just read the steps to compile C# code and create your own executable.
Virus Total Scan Report For the Executable - https://www.virustotal.com/en/file/099e ... 410347060/
I have tested my code on Windows 8 Pro and haven’t found any issue. If you got any trouble following any steps just post here and will look into it.
Credits
1. http://am.half-lifecreations.com/forums ... opic=479.0
2. http://stackoverflow.com/questions/6808 ... er-process
P.S Do say “Thank you” if it worked and helped you

P.P.S We have not modified any code of A3 client nor we are hooking anything to the A3 client so there is no violation of ROC.