Hi @mohini1329 , it would be useful to know if you are using windows authentication or sql server authentication, but I’m not sure if that will have an impact on what you are seeing.
Given it is a login timeout, and assuming you have the hostname configured correctly, I suspect it is more to do with having the correct port number configured.
Take a look at this thread. Unfortunately we never found out if it resolved the issue there, but might be worth checking…