In my Microsoft dynamics Nav 2013 R2 I cannot Use the Help, when clic on Help, or when I press F1, system open internet Page, Not Nav client help.
How can I fix this issue
From NAV 2013R2 onward the help is published via a Help Server.
Can you check if it's properly set up following this link?
* Daniele Rebussi * | * Rebu NAV diary *
For installing help server please refer below article.