[BUG] Unreal Blocked with launch Standalone with SteamVR

Development Platform & Builds XR Development
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1

My Unreal Editor get blocked when i start in Standalone.

How?

I got HTC and SteamVR launched when i open the Unreal Project. Well, in my case, start new project with ThirdPerson Template in Blueprint (First Person got the same issue).

When the project opens, go to Edit → Plugins and Check OnlineSubsystemSteam. The Editor Restart inmediatly. When opens again. Save All and Close.

Now go to Config, and in DefaultEngine.ini add the STEAM lines:

Save the config, and Start the project.

Now, start in Standalone and STEAM don’t works. This is one Bug, if SteamVR is running in background, Steam Overlay not appears, and Shift+Tab does nothing.

If quit the game (open console and write quit) the Editor is blocked.

Ctrl+Shift+Esc and Windows shows Unreal not responding.

Ok, now, other variation:
Start project again, when opens, close SteamVR, run Standalone when SteamVR is closed. Now, Steam Box appears, and Shift+Tab works.

But when quit the game, Unreal is frozen again.

My project is in VR, and i need Testing Steamworks integration, but the project blocks again and again.

My PC is a i7 2700K, Nvidia GTX 1070 with updated drivers (378.72) and Windows 10 Pro 64 Bits. No firewall and antivirus Disabled for testing ( AVG Free 2017)

The Output Log show has Steam API is Disabled, but works without SteamVR…

2

Hello CarlosPuche,

I was unable to reproduce this issue on our end. I have a few questions for you that will help narrow down what issue it is that you are experiencing.

Quick questions:

  1. Are you using Geforce experiencing with the “Share” option on?
  2. Do you get a crash reporter window when the editor freezes up?
  3. If so, could you provide the complete callstack (including login ID)?
3

Hi!

Yes, i’m use GeForceExperience, but Share button is off.

I solved partially uninstalling the GeForceExperience. Not freezes up. But Steam Overlay not working at less that i disable Steam VR.

When Freezes up, not crash Unreal, it freezes up without crash, keeps thinking infinitley.

The Unreal Freezes up because GeForceExperience is runing, okay, uninstalling it, this works, but SteamVR don’t let works SteamOverlay in Standalone. If deactivated SteamVR the Steam Overlay brigns up.

4

The issue dealing GeforceExperience is a known issue. I have written up a report for the other issue dealing the the steam overlay. I have provided a link to the public tracker. Please feel free to use the link provided for future updates.

Link: Unreal Engine Issues and Bug Tracker (UE-42881)

Make it a great day

5

Re: Shift+Tab not pulling up the Steam Overlay when SteamVR is running:

This issue must be due to the Steam runtime. While debugging, I’ve observed that FOnlineAsyncTaskManagerSteam::OnExternalUITriggered() is not simply not called by steam_api64.dll when SteamVR is running (even when I’m running with -noHMD). I don’t think this is an UnrealEngine bug, but rather a Steam/Valve bug.