my team uses firebase auth and we recently run into major problems. We started advertising our website on facebook. Unfortunately, facebook app opens all the links in the in-app webview. Google blocked support for signing in with provider through embedded browser, so none of the users that opens our webapp through facebook/messenger/instagram apps can sign in. Google/Facebook sign-in returns 403: disallowed_usegagent and it is impossible to sign up. Is there any workaround? Has anyone experienced a similar issue?
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mmm
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Other than _telling_ your users, that they should please open the site in a real browser … probably not. – CBroe May 14 '20 at 12:48
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Not sure about Google, but for Facebook I would recommend:
- do not use SignWithPopup in firebase
- set
Embedded Browser OAuth Loginto value ON for Facebook login app in Facebook developers console
Alexandr Skachkov
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