Dungeons 2 Guide

Troubleshooting · Login

How to Fix Error Code 0064 in Minecraft Dungeons 2

Diagnose where login is failing before repairing apps, relinking accounts or reinstalling the game.

Don't reinstall yet. Error 0064 does not currently have one officially documented cause.

Error code0064
Observed stageLogin / authentication

Error 0064 Status

Official one-cause definition
Not published
New reports
Still appearing for some players
Current status
Most launch login and account-linking issues were resolved on the backend and are still being monitored.
Last checked Oct 3, 2026View updates

What it means

What Does Error 0064 Mean?

Error 0064 appears with “Log In Failed”, so it belongs to the sign-in chain, not to gameplay. It does not have a published one-code-one-cause definition, so this page diagnoses the layer that is failing instead of guessing a single cause.

What is known

  • It shows up during login or account linking.
  • Launch-period login and account-linking problems were mostly fixed on the backend and are still monitored.
  • Players have recovered through different steps, so the trigger differs per setup.

What is not known

  • No official definition says it always maps to one single cause.
  • No official statement claims it can never return.

Where login can fail

  1. 0The game
  2. 1The platform launcher
  3. 2Your Microsoft account
  4. 3Xbox identity and services
  5. 4The platform-to-account link
  6. 5The Minecraft / Dungeons II backend

The steps below walk this chain from the least invasive layer to the most invasive, so a backend problem never looks like a broken installation.

Start diagnosis

Start Diagnosis

Answer two questions. Your answers stay on this device, and the fix path below adapts to your platform.

Where are you playing?

The platform decides which fixes apply. Steam Deck and Linux have their own pages.

When does 0064 appear?

Pick the closest moment.

Official guidance

Microsoft Account Check

Dungeons II uses a Microsoft account for login and license verification. The official support guidance is to confirm the same Microsoft account is signed in on every relevant app, not only that an app says “Signed in”.

Confirm the account identity before continuing. A Windows device often has a personal, work and old Xbox account side by side.

If a Microsoft account appears anywhere else, sign out of it there and sign back in with the intended one.

Your path

Steps go from least to most invasive. Stop as soon as the game reaches the main menu.

Ordered fix path

Fix Error 0064 Step by Step

This is a diagnosis, not a “10 ways” list. Each step says why it exists, what to do, and what success looks like.

  1. Level 0 — Check the current login service state

    Official current action
    Why
    Most launch login problems were backend issues, so a local repair would not have helped.
    Do
    Open the updates page and look at the Login / Account status before changing anything on your device.
    Expected result
    You know whether a known login issue is active right now.
    Did the game reach the main menu?

Before You Change Anything

  • Do not reinstall the game as a first step.
  • Do not unlink and relink accounts at random. Links can have cooldowns and progress rules.
  • Do not delete saves or remove an Online Hero to test a fix.
  • Do not run random PowerShell scripts or “one-click” fix downloads.
  • Never share your password or an authentication code with anyone.
  • Do not create a second account to work around the error.

Still broken?

Still Broken After These Checks?

Report it through the official channel instead of trying more invasive repairs. A specific report gets counted.

Open the official bug report channel

Never include your password or an authentication code in a report.

FAQ

Error 0064 Questions

Short answers to the questions players ask most.

What does error 0064 mean?

It appears with “Log In Failed”, so it belongs to the sign-in and account-linking stage. No official source defines it as one single cause.

Has Mojang fixed error 0064?

On 2026-09-30 Mojang said most launch login and account-linking issues were resolved on the backend and are still monitored. It did not say the code can never return.

Why do some players still get 0064?

Reports continue, and the trigger differs per setup. That is why this page diagnoses the failing layer instead of assuming one cause.

Should I reinstall the game?

Not first. Reinstalling does not fix account, link or backend problems, so it is the last step after everything else fails.

Does linking Steam and Xbox fix 0064?

Some players report that linking their Xbox and Steam accounts fixed it. That is a community workaround, not an official definition of the error.

Should I unlink my accounts?

No. Relinking is not a first fix. Account links can have cooldowns and progress rules, so only change them when the current account rules say it is safe.

Can consoles get error 0064?

Reports are concentrated on the PC login chain. On console, start with the service state, sign-in and platform online requirements, not Windows app repairs.

Error 0064 rules

This is a live-sensitive page. It is re-checked when the login, account-linking or service status changes.

Facts here come from current official notices and the launch build. What is not confirmed is labelled as unknown or community-reported, never stated as an official cause.

Last checked: Oct 4, 2026