Switching from httpsys to kestrel prevents Octopus startup

[tothegills]

Severity

Manual workaround

Version

2021.2.3854

Latest Version

I could reproduce the problem in the latest build

What happened?

When changing the web server that Octopus uses from httpsys to kestrial via the .\Octopus.Server.exe configure --webServer=Kestrel command, Octopus can fail to start.

Reproduction

• Setup an Octopus server on Windows
• Switch the web server via .\Octopus.Server.exe configure --webServer=kestrel
• Run the Octopus server

Error and Stacktrace

FATAL Unhandled AppDomain exception occurred: "Failed to bind to address http://[::]:80: address already in use." System.IO.IOException: Failed to bind to address http://[::]:80: address already in use. ---> Microsoft.AspNetCore.Connections.AddressInUseException: Only one usage of each socket address (protocol/network address/port) is normally permitted.

More Information

No response

Workaround

Remove the existing https binding and re-add it. See the documented instructions for more information.