Can’t access web UI on localhost when the Internet is down

Hi,
I am having problems with my Internet right now. I read that you have to whitelist IPs or turn off the connect securely option if you want to access plex on a local network without an Internet Connection. However when I try to connect to localhost:32400 I get this error:

Plex is not reachable.
Make sure your server has an internet connection and any firewalls or other programs are set to allow access.

So I am unable to change the settings. I tried this with and with http and https. Note: I have plex running ina docker container on unfair.

Is there a way to manually edit the config file to disable security? Is there anything else I can do?

Thanks,
w0den

in your preferences.xml the allowedNetworks https://support.plex.tv/articles/201105343-advanced-hidden-server-settings/

So adding the following:
allowedNetworks=“192.168.1.0/255.255.255.0” allowed me to access the web UI via IP 192.168.1,103:32400. It also allowed my Roku to connect! Score! the one thing that still does not work is localhost or 127.0.0.1. I tried adding 127.0.0.1/255.255.255.255 to no avail . Any ideas? Also, I can’t seam to access plex from my iOS devices over the lan.

Thanks!!!
w0den

it may be a case of iOS not finding it rather than it not being allowed. On iOS in settings>Advanced>Server Connections you can enter the local IP of server.

I’m not a network wizard by any means, but from our support article https://support.plex.tv/articles/200430283-network/

When the Plex Media Server is signed in to an account, specifying 127.0.0.1 will be ignored.

i seem to recall some security reason that 127.0.0.1 or local host were not allowed but don’t remember details ( i could be totally wrong)

Thanks for your help!