This article provides steps to run the Web Help Desk and IIS on the same machine without any port conflicts.
The only way to run the Web Help Desk and IIS on the same machine without a port conflict is to use multiple IP addresses on the machine.
All WHD versions
Important: Specifiy IIS to listen on the IP that the Web Help Desk is not using in the IP_ADDRESS option of whd.conf
Edit C:\Program Files\WebHelpDesk\conf\whd.conf. Set the IP_ADDRESS option to the target IP.
Note: You must bind IIS to a different IP. IIS listens on all IPs, even if your site is set to use a specific IP.
For Windows Server 2003:
For Windows Server 2008+: