A blank black box will appear. It will disappear on its own, and the Store will open. Restart your PC and try the link again. Step 4: The Registry Fix (Advanced)

Repeat this exact process for the app called Gaming Services . Step 2: Re-register the Protocol via PowerShell

Strangely, if you are clicking these links from a web browser (like a Discord invite or a web-based game tracker), the browser might be blocking the "External Protocol Request."

Right-click the and select Terminal (Admin) or PowerShell (Admin) .

Go to Settings > Cookies and Site Permissions > Handlers . Ensure "Allow sites to ask to become default handlers" is toggled ON .

By following these steps, you should restore the connection between your browser/launcher and the Xbox ecosystem, getting you back into your multiplayer session without the "msxblmultiplayer" headache.

How to Fix the msxblmultiplayer Link Error: 2026 Updated Guide

If the link is "dead," you likely need to force Windows to recognize the protocol again.

If you’ve been trying to launch a multiplayer session in a Microsoft-published game (like Minecraft, Forza, or Sea of Thieves) and found yourself staring at a broken link, you aren't alone. This protocol error usually triggers when your system fails to hand off a "join" request to the Xbox app or the specific game launcher.

The Microsoft Store will open. Click for Gaming Services. This often "re-binds" the msxblmultiplayer link automatically. Step 3: Use the Microsoft Store Reset (WSReset)