Indirect connection even on localhost

Plex Media Server
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1

Server Version#: 4.76.1
Player Version#: 1.45.0.3013-1676042f
OS: Win10 19044.1706

I seem to have made some changes to try and get plex co-habiting with a VPN two days ago. Since then PMS is inaccessible. I’ve reverted all changes and tried a few repairing options to no avail.

Analysis: (all from PMS server)
-VPN installed but not connected.
-http://127.0.0.1:32400/web - doesn’t work
-http://[serverip]:32400/web - doesn’t work
-http://localhost:32400/web - Display secure connection but cant play videos (just a loading screen) and sometimes switched to Indirect connection mode.
-Plex app is in indirect mode and display “The server SERVERNAME is unreachable. Make sure it’s running, double check your network, and try again.”
-Plex app (on same server) connection is unstable and will disconnect randomly.
-Can see server settings in localhost URL.
-Secure connections set as Preferred.
-If the network is off, PMS cant be reached even on localhost URL

What has been tried:
-Sign in and out of server and app
-Did repair with installation
-Worked though these steps
-Win restore (BSOD on every previous restore)
-Host file is clean
-Disabled AV.

Plex Media Server Logs_2022-06-01_13-40-49.zip (1.0 MB)

2

UNinstall it.

Then perform How to Reset Network Settings in Windows 10

Then restart windows (shutting down and booting up is not the same as restarting)

3

Uninstalled VPN
Network reset
Restarted server

Still same issues.

4

Some extra info. When I unticked Enable server support for IPv6 PMS crash on startup with these errors.

ERROR - HttpServer: Error binding acceptor: An attempt was made to access a socket in a way forbidden by its access permissions
ERROR - Error: Unable to set up server: listen: An attempt was made to access a socket in a way forbidden by its access permissions (struct boost::wrapexcept)

5

That’s got “overly aggressive firewall” or “antivirus with host security” vibes. You mentioned that AV was disabled - do you have 3rd-party AV/malware software installed?

6

No. I even disabled win firewall. AV is disabled. It’s Avast and has been on for a very long time together with PMS.

And if that is the case, why only when Enable server support for IPv6 is off? When on PMS start up. Bear in mind, all this wasn’t an issue 2 days ago.

7

I’ve think I’ve manage to get the cause but weren’t able to find a working solution.

To test run this in elevated cmd.
netsh http add iplisten 127.0.0.1

I got an “Access denied” error even though I am admin user.

I ended up doing a clean install Windows install and the above was the first thing I’ve used to test. All is working as expected again and I can get to plex using all URLs.

Thanks to those that help and hope this would assist someone in this really bizarre situation.

8

A/V software is in many cases still influencing regular operation of your computer even if you “disable” it. Only a clean uninstallation can help.
You’re best advised to look at the support pages of the manufacturer of said A/V software for instructions or maybe even a removal tool.

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