One option is display the url in the message box, along with a message and provide the help button that takes you to that url:
MessageBox.Show(
"test message",
"caption",
MessageBoxButtons.YesNo,
MessageBoxIcon.Information,
MessageBoxDefaultButton.Button1,
0, '0 is default otherwise use MessageBoxOptions Enum
"http://google.com",
"keyword")
Important to note this code cannot be in the load event of the form, the Help button will not open the link.
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