This is a known issue in vSphere 6.5. This issue is resolved in ESXi 6.5 Update 1
To resolve this issue update the /cgi-bin port in the /etc/vmware/rhttpproxy/endpoints.conf file.
- Connect to the ESXi host with an SSH session and root credentials.
- Edit /etc/vmware/rhttpproxy/endpoints.conf with this command:
vi /etc/vmware/rhttpproxy/endpoints.conf
- Look for the /cgi-bin entry and change the port to 8303.
For example:
/cgi-bin local 8303 redirect allow
- Save and exit the file.
- Restart rhttpproxy and hostd services.
/etc/init.d/rhttpproxy restart
/etc/init.d/hostd restart