Outline Client Unable to Connect: Invalid Access Key Error After Successful Server Setup

[Zeus64]

I set up a fresh Ubuntu 24.04.1 LTS server and installed Outline Server on it. I forwarded the necessary ports on my router: 48742 (TCP and UDP for the access key) and 15472 (TCP for management) to the Ubuntu server. From my desktop, I was able to connect to the server using the Outline Manager and successfully create a new access key.

However, when I try to connect using the Outline client, I consistently get the error: 'It seems like your access key is not valid. If this happens again, please contact the person who gave it to you.' In the Outline Manager, I can see that a small amount of data is exchanged during the connection attempt, but the connection still fails. I’ve tried different clients, locations, and networks, but the problem persists.

Is this a known bug, or what could be causing this issue?

[Zeus64]

I just tried on a fresh install of Ubuntu 20.04 LTS, same probleme :(
does someone know what i can do to debug this problem? how can i access the log ?

[Zeus64]

Just one remark , from the client when i connect to the server with :

ss://xxxxx@:/?outline=1

that is the good key, then imediatly (in less than a second) I receive "Invalid Access Key Error"

If I update the xxxxx part of the ss://xxxxx@:/?outline=1 by something completely random like for exemple ss://yyyyy@:/?outline=1 (so the key is completely false) then it's take around 10 - 20 second to say "Invalid Access Key Error"

It's look like i miss to setup something on the server, but what ?

• I install ubuntu
• Then I run sudo bash -c "$(wget -qO- https://raw.githubusercontent.com/Jigsaw-Code/outline-server/master/src/server_manager/install_scripts/install_server.sh)"
• then I open on the firewall router the port xxx (management) and yyyy (access key) in udp and tcp

what did i miss ?

[sbruens]

Thank you for reaching out! Please contact us through the application on the device where you’re experiencing this issue – or at support.getoutline.org – and include the GitHub issue number so that we can better support your needs.

If you haven’t already, check out the Outline Support Site at support.getoutline.org for access to help articles and more.

[Zeus64]

Hello, I already reach the support.getoutline.org with this ticket without any help :(
How can i get the outline log to know exactly what the problem is ?

[sbruens]

On the server you can look at the Docker logs with: docker logs shadowbox.

You can also use the Outline SDK fetch tool to send requests with debug information on the client-side using the access key.