Hello, I’m trying to join a Minecraft server on my pc, but I get this notification, Failed...

What error message are you getting?

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If the error message is happening only with this specific server you may need to report this to the owner

I did everything but Minecraft launcher is now erroring when I try to install it

Are you able to test with a different server? This helps us to isolate the issue a bit more.

And, please check this:
Open the Xbox Console Companion app > Settings > Network
Tell me what's saying under/next to NAT type

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In the meantime try all this together:

Open Settings, click Update and Security and then Windows Update;

Click Check for Updates;

Click the Download and Install Now option, if available (Install optional updates as well)

Also, check the Microsoft Store for any updates on the Xbox apps and its services and update everything too.

Now, sign out from your account on both Xbox app and Microsoft Store and do this:

Go to windows settings > apps > search for gaming services app > click on it and select advanced options.

After that, click repair and then reset

Then do the same for the Xbox app:

Go to windows settings > apps > search for Xbox app > click on it and select advanced options.

After that, click repair and then reset

Finally do this:

Step 1: Open the Run window by pressing Windows + R key.

Step 2: Input WSReset.exe in the Run window and click OK.

Step 3: Then a command prompt window will appear. After a few seconds, Windows Store will open.

Sign in again on both Microsoft store and Xbox app with your account, install minecraft launcher and give it a new try

Minecraft Java, I’m using windows 10, I am using the one from the Xbox app, the following are the things I have tried I went into setting and turned on and off the capability to join public lobby’s I restarted my computer, I deleted and reinstalled the launcher I logged in and out of launcher multiple times I deleted and reinstalled the Xbox app, I changed Wi-Fi, I restarted my pc again

Hi and thanks for reaching Microsoft Xbox gamer's community. My name is Josef.
I'm an Independent Advisor and a Microsoft Xbox user like you.

Hope you're doing great today despite this John

I believe additional info is needed, please answer the following questions to assist you properly :

Is this happening with minecraft Java or Bedrock?
Are you on Windows 10 or 11?
What launcher are you using? (The one from Xbox app or you download it from minecraft.net)

Besides the troubleshooting steps described in your post. You tried something else?
In that way I can advise you different things or how to proceed

I'll be waiting for your reply, greetings