Password Popup Comming again and again in Outlook

I know you are facing problem with outlook client which is asking for password again and again... outlook asks for password very frequently if it is configured for specific connection path in slow and fast network connections.

Example: I am showing this troubleshooting in outlook 2013

To resolve this, please do the following:

Open Outlook > Go to File > Account and Settings > Account Settings > Select Your Outlook account > Click on Change > More Settings > Connections > Exchange Proxy Settings > Remove check marks from below highlighted options > Ok > Ok..

You are done now.... cheers..