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New Participant
April 17, 2026
Question

MRUK QR Tracking suddenly not working

  • April 17, 2026
  • 5 replies
  • 364 views

I am making a quest3/3s app that uses QR codes for alignment, I was able to get the system working but suddenly this week I am now getting an 'MRUK Shared: queryCompleteEvent->result returned error code: -2', and QR tracking has stopped completely. The headset has stopped asking for me to confirm the environment setup before launching. I was able to confirm its broken on an old push and fresh project.

I have spent most of a day trying to troubleshoot, but my best guess is something on the headset changed, and I have done all the troubleshooting steps on the headset and unity project as possible. Any ideas here would be extremely helpful.

Ideally all i need is tracking, in fact, id love to remove the scene setup step, since the app is boundaryless and only uses the scene for QR code tracking support

MRUK/Meta XR core/Meta Interaction/SDK Essentials all V85.0.0
Quest3 OS V2.1

5 replies

New Participant
April 17, 2026

(Unity version 6000.3.12f1)

New Participant
April 19, 2026

I think its a bug with the new OS 2.1.
I have a meta quest 3 with the v85 where my unity build apk works fine with qr codes.
But the other quest 3 with v2.1 it doesnt work.

New Participant
April 20, 2026

Unfortunately it seems that updating the app packages to (v201) still didn't work.
:/

New Participant
June 1, 2026

yup, i'm in the same boat. Would be really great if this could be fixed.

New Participant
September 9, 2026

This issue still exists in version 2.7.