Cannot bind to port 80, Microsoft-HTTPAPI/2.0 Lock
问题 So, I've been trying to bind Wowza media server to port 80 on our fail-over production server, and I'm encountering something else being bound to the port. The process reports as 'System' with PID 4. After chasing myself around the web for a while, I found numerous indicators that it could be IIS, MSSQL, Microsoft's Web Deployment Service, or even the Branch Cache service. After exploring all of these options, as well as a couple more that relate specifically to this server, I can say that