Hi! I’ve implemented Google Auth using Supabase and it works super well. Unfortunately it only works on my production environment, which is pretty annoying as I then have to deploy every time I make changes to the code to test anything. It comes with this error: [image] How can I fix this? …

Is this the same issue? [image] Google login in Preview? "content blocked" v0 Hi @emilholm , thanks for sharing additional information. Have you tried using the preview domain that you see when you click Open in new tab? It’d look something like: https://if3j50bvmjas90l68…

Yes - I have tried using the link from the preview new tab window in the Google Cloud console, but it doesn’t work. Also, that link is dynamically so it wouldn’t be a viable solution anyway. Here’s how my Google Cloud is setup: [Screenshot 2025-08-01 103915]

@pawlean This is really unfortunate and affects any Google auth implementation, including Supabase and Firebase. Some sort of complicated proxy-based auth flow would have to be created by the user, which defeats the underlying purpose of v0. It seems like the only viable solution would be to change …

Yeah its super important. Otherwise it will continuously be very difficult for people to develop complex products with v0, as they almost always require login.

We do have plans to make the iframe domain stable, no ETA on it unfortunately This template uses NeonAuth, which supports both social and username/password auth. Their social auth features don’t work at all in iframes (restriction on their end) but the username/password does so I use that when I’m …

Sounds good - will look into that. Thanks, Jacob!

Using Google Auth on test environment within v0

pawlean (Pauline P. Narvas) July 31, 2025, 7:40pm 4

Is this the same issue?

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Using Google Auth on test environment within v0

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