How do I resolve outlook cannot connect to server problem?

Outlook is one of the most popular emailing services, which is mainly used by countless people to send or receive emails. It is the most effective way to communicate with anyone, so countless users select it for many purposes. It has the potential to store notes, tasks, and calendars. I want to send or receive emails through my outlook account, so I am not able to precede this task.  For this purpose, I need to connect to the outlook exchange server with the aim of sending or receiving emails. I am experiencing difficulty to connect to the server. I don’t have the solid resolutions to fix outlook cannot connect to server issue. Can anyone recommend the easy methods to fix this issue?