Fix "Unfortunately, help seems to be broken...There aren't any help collections in the current language for the site you're using." Error in SharePoint 2016

Problem: The Help Menu (?) in SharePoint 2016 is not working! On clicking the Help menu, it gets the error message:
"Unfortunately, help seems to be broken... There aren't any help collections in the current language for the site you're using."

Troubleshooting Steps: 

• Enable External Web-based Help in Privacy Options of SharePoint 2016 Central Admin. Navigate to :http://central-admin-url/_admin/privacy.aspx, and Set "Yes" to "Display Help from external web Sites as specified by each Help collection?"
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• Check the help collection status and install if needed: Open SharePoint 2016 Management Shell, Run:
  

  Get-SPHelpCollection 

  
  It gave nothing. Guess help collection is not installed. Now, Install help collection by running:
  

  Install-SPHelpCollection -All 

wait for few minutes to get them installed (10 min!). Try close and reopen the SharePoint 2016 sites! Now, SharePoint 2016 help should work.

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Clik here to view.