I am running Home Assistant OS on a VM. Version is 2025.10.1
I have the Let’s Encrypt Add On installed, Version 5.4.9, which has been working for a while. However, when I click on Start, I now receive the following error:
Failed to start add-on
Can’t start addon_core_letsencrypt: 500 Server Error for http+docker://localhost/v1.51/containers/f674bad88bbb5d275ff1dc685527ff1d26a25052aa3fdf0e6858d6d7f86cbf93/start: Internal Server Error (“failed to set up container networking: driver failed programming external connectivity on endpoint addon_core_letsencrypt (e05036217117287cd5a3459238e310c8a4a12893c36754e4807b983b86002e6c): failed to bind host port for 0.0.0.0:80:172.30.33.3:80/tcp: address already in use”)
I think this might be related to the recent change I made, where I setup a Cloudflare tunnel to my local network, but I can’t work out what the problem is from the error message.
I have uninstalled and re-installed the Add On.
Can anyone help me please.