Regardless of whether you are using the vCenter Server Appliance or a vCenter Server system installed on Windows, you must reregister Auto Deploy if the vCenter Server IP address changes.
For Windows based vCenter
Edit the setup file located at c:ProgramDataVMwareVMware vCenter Auto Deployvmconfig-autodeploy.xml and specify the new IP address.
You do not have to edit the file if you reregister for other reasons than a new IP address.
Run the autodepoy-register.exe command-line tool, specifying all required options.
autodeploy-register.exe -R -a vCenter-IP -p vCenter-Port -u user_name -w password -s setup-file-path
Though above example talks about the –setupfile, I have not found this setup file. It may or may not work, worth checking.
VMware vCenter Server Appliance
As per VMware KB you also need to run /usr/bin/autodeploy-register with same syntax mentioned above. Then restart the Auto Deploy daemon /etc/init.d/vmware-rbd-watchdog. You can start the daemon directly or use the Start ESXi Services and Stop ESXi Services vCenter Server Appliance buttons.