This article provides 5.5.23 HF2 (Hotfix-2) and information about how to apply this fix on your servers. The hotfix is a cumulative update so contains all fixes from HF1 for build 5.5.23.
Important Notes
Latest Issues Fixed
Procedure
MachSol.MachPanel Provisioning Service. MachSol.MachPanel.ConfigurationStudio.exe. MachPanel Billing Service. MachPanel Helpdesk Service. MachPanel Network Service. MachPanel License Service. MachPanel O365 Service.
http://www.machsol.com/updates/v5.5.23HF2.zip
Note: Please Unblock the files before replacing in installation directory if the downloaded Zip folder is blocked.