ur host work for a long time? try this: renew ur host certificate by my EXP most 503 error caused by service , and service can not start caused by certificate. And I suggest uprade 7.0 caused of VMware 6.5/6.7 retired last year . about how to check ur certificate
https://kb.vmware.com/s/article/2015600?lang=en_us ** If you found this reply useful, may i have kudos **
