ESCi 5.X or 5.5 is still used by some deprecated servers. While trying to backup the VMs using VEEAM, one will encounter some issues. Below are some recommended notes to assist in getting VEEAM to work with ESXi 5.5
esxcli network firewall ruleset set -e true -r httpClient
esxcli software profile update -d https://hostupdate.vmware.com/software/VUM/PRODUCTION/main/vmw-depot-index.xml -p ESXi-5.5.0-20160904001-standard
#SUPPRESS SSH ENABLED warning…. on ESXi 5.X
esxcli system settings advanced set -o /UserVars/SuppressShellWarning -i 1
#Enable SSLv3 for Veeam
esxcli system settings advanced set -o /UserVars/VMAuthdDisabledProtocols -s ""
##Verify SSLv3 Above ….
esxcli system settings advanced list -o /UserVars/VMAuthdDisabledProtocols