Connection to web as well as EPM stuck at "Connection in progress"

Hello experts,

We are facing issues while log in BPC from web as well as from EPM. Below are the screenshots from EPM where exactly it gets stuck.

Is there anything specific which we should check from server or http connection level to resolve the issue.

We have done a restart which resolves the issues it is not practical to restart everytime.

Thanks,

Dolly Katyal