Last Updated: Sep 4, 2024
Overview
A user cannot log in through Instagram or TikTok embedded browser.
The message 403: disallowed_useragent can be seen for web login from the embedded browsers.
Applies To
- Social Login
- Embedded Browser
- 403: disallowed_useragent
Cause
Google OAuth does not work in embedded web views per policy. See this document for reference.
Solution
The workaround is to use one of the alternatives recommended in the link, like Chrome Custom Tabs. The possible explanation for why it works in some cases could be related to each user’s mobile configuration, whether they have Chrome as their default browser app.