I had this problem before, where if I toggle out of VR during a flight and then attempt to do so back into VR to continue the flight, MSFS dumps VR completely and issues this message "The initialization of VR failed. Please check that Open XR is installed on your computer and your headset can use it."  Once this occurs, the only way to get back into VR mode is to exit MSFS and restart it.  This only happens once a flight has been initiated.  I've be able to avoid this problem by not using any features of the OpenXR tool, but with SU7 it happens every time regardless of the settings of the OpenXR tool, which BTW I cleanly removed from my computer a while ago.  So for now the workaround is once I start a flight in VR mode, don't toggle out of VR mode.  Not a big deal, but definitely something is not right.  Tried the latest nvidia driver to no avail.  Others have been reporting this problem for a while, and now it's my turn to do so.  I also have "windows mixed reality for steamVR" installed, and maybe there is something up with that, but I don't want to mess too deeply with stuff that works (well sort of), for in doing so sometimes you end up with nothing that works.  Anyone other Reverb G2 users having this happen?

Edited November 21, 20214 yr by TheFamilyMan

Fortunately for me, I don't have any issues going in and out of VR with the Reverb G2.  So its not happening to everyone. 

You mentioned Steam VR.  You should not be using Steam VR with the Reverb when it comes to MSFS.  MSFS will interface directly with Windows Mixed Reality. You Just need Open XR on your PC.  If that is the case, Just Launch Mixed Reality portal, that's it, Then MSFS.

I only use Steam VR when playing Steam VR games that don't support WMR directly.

If you are running both at the same time, maybe this is your issue. 

Edited November 21, 20214 yr by rickjake
added more info

I only run WMR when running MSFS.  I only mentioned the steamVR stuff since it sinks hooks into the OpenXR layer when it installs.  I only use steamVR for IL-2 Battle of Stalingrad and a few other steam VR games.

Edit: I see that you have a very similar build to mine, plus have steamVR installed without any issues...crud!  Maybe I will try a full purge of all OpenXR related software and start over.

Edited November 21, 20214 yr by TheFamilyMan

Ok.

Are you using the Steam VR Runtime or the OpenXR Runtime?

The only strange thing I noticed on my system, is occasionally, when exiting VR, my framerates drop down to 1 or 2 FPS. If I go back into VR, its fine again. This only happens about 20 percent of the time, but I have not had it crash on me. If I close the Mixed Reality Portal, the Frame rate goes back to normal. Strange. 

Make sure you are running the latest firmware for your Reverb G2, Check the windows store to make sure you are running the latest version of OpenXR for Windows Mixed Reality. There was an update a few days ago. 

Good luck. 

Same here since SU7 update, before that it worked fine.

So far I have pinpointed it to Navigraph (the ingame panel). Do you use Navigraph?

Exactly the same problem i have since SU 7. I am totally frustrated and not flying in VR anymore because of it...

I don't use navigragh.   Also, currently not using any freeware/community folder items.  I've had a few times that the in flight VR toggle worked properly in SU7, thinking that there may be a timing/timeout API level issue behind this problem.  BTW, I got my G2 a few weeks ago, it's the recently revised version.

13 hours ago, rickjake said:

You mentioned Steam VR.  You should not be using Steam VR with the Reverb when it comes to MSFS. 

FYI If you want top quality overlays then yes you should/can use SteamVR with the G2 like I do.

(I need to see if WMR has improved this area, maybe the upcoming update might help)

I can confirm the exact same problem, but it exists since SU6 for me and I hoped that SU7 might eventually solve it. But no. I reported to Zendesk a couple of days ago, waiting for an answer.

4 hours ago, MarcG said:

FYI If you want top quality overlays then yes you should/can use SteamVR with the G2 like I do.

(I need to see if WMR has improved this area, maybe the upcoming update might help)

If it works for you, then great. 

This has. been happening for a while for me too.

intermittent for me. Since su6, sometiimes I can run whole sessions in and out of VR without problem. Othertime, same error message. I havent find what differ between sessions that can explain the behavior.

I too have (hopefully had), this issue.

Its only coincidence that this has been happening since SU7. It so happens that openXr or developer tools was updated the same day that SU7 was released. Prior to the Xr update I couldn't use "latest preview openXr runtime" because this error would occur. I gather that the then 'latest preview' is now the 'normal runtime'. hence I could not enjoy MSFS in Vr anymore.

After hours of driver and setting changes, I finally stumbled on something that worked for me.

I changed the 'OpenXr Developer Tools', to run with administrator privilages. 

I am now able to toggle in and out of Vr. The problem I now have, is that toggling to 2d is useless, as the stutters and low frames are so bad, MSFS is unusable....Till I close 'Mixed Reality Portal'. Then 2d will work perfectly.

This convoluted work around is the only way I have found to enjoy MSFS in Vr. 

I wish there was some way to roll back to the previous ver. of OpenXr Developer Tools.

So for me to get to 2d mode: toggle 2d mode. then close Mixed reality portal.

 

Edited November 22, 20214 yr by Romeo_Tango

I suggest you update to the latest OpenXR runtime 109.2111.18007.0 It seems to have solved the problem for me.

I am content to stay on OpenXR runtime 107.2109.10010 for the moment as I can switch 2D <--> VR at will. (as long as I don't use DX12 beta).

The DX12 was DOA. I got a CTD every time I switched back to 2D.