Hi Prasanna
Hope you are fine!
I would like to see if you application is a Windows Based application or Web Application or a merge of both technologies. You can use a Vugen or LoadRunner Feature called 'Protocol Advisor'
For version 12:
1. Open Vugen and open Protocol Advisor --> Analyze Application followed by Record on the main menu.
2. On Protocol Advisor Window, put the location or path where the executable of the application is, it is on Program to analyze .
3. In Working Directory, place this location: C:\Program Files (x86)\HP\LoadRunner\bin or similar on your environment.
4. Click Start Analyzing button to analyze the Business Process of the Application Under Test. It will list a possible group of protocol you can try.
5. For LoadRunner version 11.04 the feaute is located on with the same steps above.
Note:Before you start this, we need to disable the windows features: DEP, UAC and windows firewall. I have attached a word document to disable those features temporally, the instructions to rollback the disable process are on that document.
What version of .net framework are you using?
Is the application a 32bit application mode?
Kindly waiting your prompt reply.
Regards,