Hi Rahul ,
Can you try to install ABAP plugin again with the option of "Direct" or "Manual" Active providers.
You can change above mentioned Active providers as following:
1. Go to Window [Eclipse Menu Bar]->Preferences->General->network Connections [then change Active providers to "Direct" or "Manual" ].
2. press OK.
3. Install your ABAP plug-in again.
Hope this helps.
Best Regards,
Vaibhav
Message was edited by: Vaibhav Kumar