How to resolve outlook inbox not updating from Exchange?

I want to access exchange mailboxes and Inbox through my Microsoft outlook. My Outlook does not update my all mailboxes and inbox folder, so I am not able to access mailboxes and Inbox correctly. The important emails, content and necessary emails in the mailboxes are not refreshed, so I want to update my Outlook account to access all things. I don't
have the permanent solutions to fix Outlook inbox not updating from exchange . I am experiencing this error from a long period, so I want to take online help for this concern. So anyone can share the simple ways to sort out this error as soon as possible.