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Cannot Authenticate Game Center

Hello! I am building an app for iPhone and am having difficulty authenticating with Game Center.

I have a development certificate and development provisioning profile set in the project preferences. I did not set up anything special in Xcode itself. Can Game Center start up with these provided credentials?

I have successfully launched it on iPhone 7 (using Project Launcher in Unreal). I am using the "Show External Login" BP function to log in, but it always fails (help from this post).

Game Mode Calling Login Function

Calling actual Game Center Login Function

In the Project Settings, I ticked the "Enable Game Center Support" option and other options from the forum post here.

Option Enabled

As stated in the post, I changed my .ini files to make IOS my default Online subsystem platform as well.

Subsystem Set

I have a feeling that the project is trying to login, but the service is null as it always fails on login.

As a side note, I downloaded Unreal's Match 3 and launched it to my phone, which successfully connects to Game Center. I am trying to follow their method to no avail.

UPDATE: Added pictures and more information.

Product Version: UE 4.22
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asked May 23 '19 at 01:43 AM in Using UE4

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Well, it turns out that my problem was that I did not enable the online subsystem plugin in the editor.

This is "Online Subsystem iOS" plugin in the "Plugins" menu in the Unreal Editor. Once this was ticked and I restarted the engine, my game was able to authenticate me with Game Center.

Hopefully I wasn't the only one to make this dumb mistake and it helps someone else!

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answered May 24 '19 at 06:18 PM

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