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Run Two Game Instance on One Computer

Hello,

I'm working on a local multiplayer game. We need to run two instances of the game simultaneously. When I try to open the second instance, it closes the first one. Is there a way to open the two instances simultaneously?

As a workaround, I can run each instance under different account. But that's not an option for the final version. Any suggestions?

Thank you

UPDATE: SteamVR was causing the second instance to close. The blank project can be opened multiple times on computers without SteamVR. Is there a way to open two instances of a SteamVR built? https://issues.unrealengine.com/issue/UE-29485

Product Version: UE 4.14
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asked Apr 25 '17 at 05:49 AM in Packaging & Deployment

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excalibour00
6 2 3 5

avatar image Sean L ♦♦ STAFF Apr 25 '17 at 07:21 PM

Hey excalibour00,

Are you using Steam integration in your project?

avatar image excalibour00 Apr 25 '17 at 07:56 PM

No, I also tested it with a blank project, but still wasn't able to run two instances of the blank project. The new instance always closed the old one.

avatar image excalibour00 Apr 25 '17 at 08:22 PM

SteamVR was focused when I tested. So, you were on the right track Sean:)

avatar image Sean L ♦♦ STAFF Apr 25 '17 at 08:03 PM

How are you attempting to run the project? Have you tried setting the number of players to 2 in the editor if you're trying to test PIE?

avatar image excalibour00 Apr 25 '17 at 08:05 PM

I'm building a 32bit version of the project and test the built version

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2 answers: sort voted first

A temporary workaround this(confirmed working with one non-vr and one VR, so don't think 2 VR clients works):

Open the NON-VR client, without doing anything else go to task manager and close every process that starts with VR_... then also close SteamVR.

Next open The VR client, and it will boot up without forcing the first to shut down. Now, this works once, after that it will close again if you do the same steps, however after that it works again. So for every open you need to do do it twice.

It's very hacky, but for now works for my needs. If you need 2 VR clients, i'd say test in-engine in PIE.

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answered May 14 '17 at 02:23 PM

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CelestialCel
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Unfortunately, this is not an issue with the Unreal Engine. Our developers have investigated this, but it has been determined that Steam VR is killing the process. I'd recommend getting in touch with Valve's support team if you're interested in looking into a resolution for this.

Have a great day

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answered Apr 26 '17 at 11:55 AM

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Sean L ♦♦ STAFF
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