The HTTPS certificates must be installed. 
		
 
	   
	 The web service can be started using one of the following mechanisms: 
		 
		   
		  - Restart the web service by using the http server use-vrf
						<vrf-name> shutdown command in configuration mode, followed by
					the no http server
						use-vrf <vrf-name> shutdown command. 
  
		  - Reboot the entire device. 
		  
  
		  - Commit an HA
					failover, if that option is available.