If chrome displays 'Error starting XR Device' you will need to press the Windows key and type RegEdit and open the Registry Editor. From here expand HKEY_LOCAL_MACHINE and then expand SOFTWARE. Under software seach for Khronos, expand this, below should be OpenXR, expand this, below should be a folder named 1. Any folders below the one named 1 should be deleted.
Next in 1 folder you should see a registry named ActiveRuntime. Double click this to edit it and replace it with the one of the following, select the one that is relevant to the headset you'll be using