Unregister a vCenter Server System from the vSphere Web Client
You can unregister a vCenter Server system from the vSphere Web Client if you no longer want users to use that vSphere Web Client instance to connect to the vCenter Server system.
Prerequisites
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Log-in to the system on which the vSphere Web Client is installed. You cannot unregister a vCenter Server system from a remote system.
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Ensure that you have login credentials with Administrator privileges for the vCenter Server system that you are registering.
Procedure
1
Open a Web browser and enter the URL for the administration tool: https://localhost:9443/admin-app or https://127.0.0.1:9443/admin-app.
Use the localhost or loopback address to access the administration tool instead of using the server IP address.
2
Select the vCenter Server system to unregister.
3
Click Unregister vCenter Server.
4
Type the username and password and click Unregister.