Put the host into maintenance mode, ssh to the host, and then run below command:

esxcli network firewall ruleset set -e true -r httpClient
esxcli software profile install -p ESXi-6.5.0-20170404001-standard -d https://hostupdate.vmware.com/software/VUM/PRODUCTION/main/vmw-depot-index.xml

Then reboot the host after installation finished:)