Its mostly a permissions issue with the account used to install. Better to use a VCSA to avoid all this unwanted issues. Also windows is deprecated now
2021-05-09T23:32:48.270Z Failed to determine if firewall service is running. Details: (5, 'OpenService', 'Access is denied.')
2021-05-09T23:32:48.270Z ['Traceback (most recent call last):\n', ' File "C:\\Program Files\\VMware\\vCenter Server\\firstboot\\visl-support-firstboot.py", line 676, in <module>\n Main()\n', ' File "C:\\Program Files\\VMware\\vCenter Server\\firstboot\\visl-support-firstboot.py", line 665, in Main\n DoFirstboot()\n', ' File "C:\\Program Files\\VMware\\vCenter Server\\firstboot\\visl-support-firstboot.py", line 515, in DoFirstboot\n genPortInstallParams()\n', ' File "C:\\Program Files\\VMware\\vCenter Server\\firstboot\\visl-support-firstboot.py", line 306, in genPortInstallParams\n portsToOpenMap = openFirewallPorts(installParams);\n', ' File "C:\\Program Files\\VMware\\vCenter Server\\firstboot\\visl-support-firstboot.py", line 163, in openFirewallPorts\n if not isFirewallSvcRunning():\n', ' File "C:\\Program Files\\VMware\\vCenter Server\\python-modules\\cis\\utils.py", line 1750, in isFirewallSvcRunning\n fwSvcControl.open()\n', ' File "C:\\Program Files\\VMware\\vCenter Server\\python-modules\\cis\\utils.py", line 1301, in open\n win32service.SERVICE_ALL_ACCESS)\n', "error: (5, 'OpenService', 'Access is denied.')\n"]