iOS 18.2 blank sign in screen

[diwakar445]

Trying to sign in on iOS 18.2 in the Simulator (using the browser view), all I can see is a blank screen. Tested a few versions of MSAL up to 1.5.1. This works on a real device but it's an issue during development since we can't sign in into the app.

[Veena11]

@diwakar445 ,

I am unable to repro this issue locally

I tested on macOS 15.2 / xcode 16.2/ MSAL 1.6.2

[mandariino]

@diwakar445 You can avoid this behavior modifying the webViewType in the webViewParameters as MSALWebviewType.wkWebView

webViewParamaters?.webviewType = MSALWebviewType.wkWebView

[hendryems]

@mandariino / @Veena11 , I'm hitting the same thing but from my React-Native app that uses MSAL through objective-c: https://github.com/stashenergy/react-native-msal/blob/master/ios/RNMSAL.m

Unfortunatley, the workaround to specify MSALWebViewType.wkWebView didn't work for me.

If I understood correctly, this is the relevant code:

RCT_REMAP_METHOD(acquireToken,
                 interactiveParams:(NSDictionary*)params
                 resolver:(RCTPromiseResolveBlock)resolve
                 rejecter:(RCTPromiseRejectBlock)reject)
{
        ...
        // Configure interactive token parameters
        UIViewController *viewController = [UIViewController currentViewController];
        MSALWebviewParameters *webParameters = [[MSALWebviewParameters alloc] initWithAuthPresentationViewController:viewController];
        webParameters.webviewType = webviewType;
        webParameters.presentationStyle = presentationStyle;
        if (@available(iOS 13.0, *)) {
            webParameters.prefersEphemeralWebBrowserSession = prefersEphemeralWebBrowserSession;
        }
       ...

What's the nature of how / why specifying wkWebView workaround this? After explicitly specifying it, it didn't work for me. I tried using different presetantationStyle as well, i.e. automatic, pageSheet, currentContext, overFullScreen but it didn't seem to help.

The call to acquireTokenWithParameters simply didn't return and I don't seem to get any browser UX either...

Any other thoughts or suggestions?

[xremix]

I was having the same issue in the simulator and the suggestion from @mandariino fixed it for me.