I managed to find a more recent solution as a temporary fix, it might help someone until MS fix the issue in a future update.
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Edge on hololens is working quite well with WebXR, no workarounds needed. Want to share a playground or a demo that doesn’t work (and should, of course 
)
I’ve seen the same thing as @Mal_Duffin, it’s not Babylon specific, any WebXR demo stops working.
I was actually in the middle of working on something, and the same demo first worked, when I restarted edge it seemed to do an update. After which it stopped working. Honestly heartbreaking and made me pause webxr development for a little bit while I look for another device to test with.
can you share the OS and browser version? I want to understand what could be the cause here
According to the link @Mal_Duffin shared it’s the combination with OpenXR that’s the issue.
His versions are:
Windows version OS Build: 22621.1324
I haven’t checked mine
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I wanted to check, so I updated my system, and now… WebXR doesn’t work. No flag helped. Updating now to 22621.1328, hoping for a fix.
I hope it’s fixed, but last time it took literal months. But at that time VR still worked, I think both are now broken so that might make it higher priority 
So that didn’t work as expected - device is in recovery mode, update failed. I’ll wait for the next nightly update and see if it helps. No luck so far.
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Hiya @RaananW - if you follow the instructions in the link I posted, you’ll be able to get back to a working WebXR version. It’s a bit of hassle, but it works consitently ( I’ve done it a couple of times now )
It’s hard to know if this has been flagged internally, so that the internal team know about it and are working on a fix. It’s a right PITA, but def worth raising the issue - the more times it’s reported, the higher up the priority list it might go.
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Looks like they’re aware and working on it, so that’s good. But no idea when it would be fixed. Again, last time it took months 
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Did any of the new nightly updates to the HoloLens 2 fix this issue?
I still have no direct answer, and i can’t update my device because the update (1468) crashes the entire system.
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That def sucks!
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