Quest 3S v2.5 update broke WebXR/WebGL: render init fails in Browser (regression)
Hello,
I am reporting a regression introduced by the July 8, 2026 software update
on Meta Quest 3S (OS v2.5, build 3594280027800610).
Summary:
A WebXR streaming web application (NVIDIA CloudXR.js web client, WebGL-based)
that had worked reliably for several weeks now fails immediately when
connecting, with the error:
failed to create CloudXR session: Error: Failed to initialize WebCL render
The failure occurs during the client's local render-context initialization,
before any network session is attempted (confirmed: the streaming server
receives no connection attempt).
Evidence that this is a headset-side regression:
- The same URLs work correctly in desktop Chrome on the same network,
so the server stack is healthy.
- The app worked on this same headset until the July 8 update.
- Tried on the headset: private tab, full reboot, clearing browser data —
same failure. Wolvic on the same headset also fails, which may point to
an OS-level graphics/WebXR runtime change rather than the browser alone.
Questions:
1. Did the v2.5 update change WebGL/WebXR context creation behavior?
2. Is there a rollback option or an ETA for a fix?
This blocks an active university robotics research project (VR teleoperation
data collection). Related public threads:
- NVIDIA forum: https://forums.developer.nvidia.com/t/376238
Thank you,
Jun