Hi Srinivas,
You need to follow my whole scenario.
If you have build your addon only in x86, and create 2 ard installers. This will not work.
You can register both in server, but you can only install 1.
BUT
if you followed my above, build in the addon in 2 platforms. x86 and x64.
And create the installer for each of them.
Yes. you can register and install both on server.
Regards
Edy