How to resolve outlook inbox not updating from Exchange?

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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.