SharePoint 2013: How to Update the Central Admin URL Desktop Icon Link

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Scenario:

You provision central administration web site on another server and want that server to be the primary. The new website is available however, when launched from the icon it points to the old url. 

Resolution:

You need to update the URL in the registry in every server in the farm.

1. Backup registry

2. Go to > HKEY_LOCAL_MACHNESOFTWAREMicrosoftShared ToolsWeb Server Extensions15.0WSS

3. Edit 'CentralAdministrationURL' to the new url

 

When you launch the Central Administration website, it'll be pointed to the new url.