Google or Social Login Not Working in Base44 App
You have enabled Google login (or another social OAuth provider) in your Base44 app, but clicking the social login button results in an error. Users may see a Google error page, a "redirect_uri_mismatch" message, or get redirected back to the login page without being authenticated.
This issue is particularly frustrating because social login often works perfectly in the Base44 editor preview but breaks in the published version of the app. The OAuth flow requires precise URL matching that can easily go wrong between environments.
Error Messages You Might See
Common Causes
- The OAuth redirect URI configured in your Google/social provider console doesn't match the published app's URL
- Client ID or client secret was copied incorrectly or contains extra whitespace
- The OAuth consent screen has not been published or is still in testing mode with limited test users
- The app's published domain changed (e.g., custom domain added) but the OAuth provider wasn't updated
How to Fix It
Double-check the redirect URI in your OAuth provider's console (e.g., Google Cloud Console). It must exactly match the URL Base44 uses for the callback, including the protocol (https) and any path segments.
If using Google, make sure your OAuth consent screen is configured for production use, not just testing. In testing mode, only explicitly listed test users can log in.
OAuth configuration involves multiple systems and precise URL matching. If you've verified the basics and the issue persists, a developer experienced with OAuth flows can quickly identify the mismatch.
Real developers can help you.
Dor Yaloz
SW engineer with 6+ years of experience,
I worked with React/Node/Python
did projects with React+Capacitor.js for ios
Supabase expert
prajwalfullstack
Hi Im a full stack developer, a vibe coded MVP to Market ready product, I'm here to help
Jen Jacobsen
I’m a Full-Stack Developer with over 10 years of experience building modern web and mobile applications. I enjoy working across the full product lifecycle — turning ideas into real, well-built products that are intuitive for users and scalable for businesses.
I particularly enjoy building mobile apps, modern web platforms, and solving complex technical problems in a way that keeps systems clean, reliable, and easy to maintain.
Victor Denisov
Developer
Richard McSorley
Full-Stack Software Engineer with 8+ years building high-performance applications for enterprise clients. Shipped production systems at Walmart (4,000+ stores), Cigna (20M+ users), and Arkansas Blue Cross. 5 patents in retail/supply chain tech. Currently focused on AI integrations, automation tools, and TypeScript-first architectures.
Omar Faruk
As a Product Engineer at Klasio, I contributed to end-to-end product development, focusing on scalability, performance, and user experience.
My work spanned building and refining core features, developing dynamic website templates, integrating secure and reliable payment gateways, and optimizing the overall system architecture.
I played a key role in creating a scalable and maintainable platform to support educators and learners globally.
I'm enthusiastic about embracing new challenges and making meaningful contributions.
Alvin Voo
I’ve watched the tech landscape evolve over the last decade—from the structured days of Java Server Pages to the current "wild west" of Agentic-driven development. While AI can "vibe" a frontend into existence, I specialize in the architecture that keeps it from collapsing.
My expertise lies in the critical backend infrastructure: the parts that must be fast, secure, and scalable. I thrive on high-pressure environments, such as when I had only three weeks to architect and launch an Ethereum redemption system with minimal prior crypto knowledge, turning it into a major revenue stream.
What I bring to your project:
Forensic Debugging: I don't just "patch" bugs; I use tools like Datadog and Explain Analyzers to map out bottlenecks and resolve root causes—like significantly reducing memory usage by optimizing complex DB joins.
Full-Stack Context: Deep experience in Node.js and React, ensuring backends play perfectly with mobile and web teams.
Sanity in the Age of AI: I bridge the gap between "best practices" and modern speed, ensuring your project isn't just built fast, but built to last.
Jaime Orts-Caroff
I'm a Senior Android developer, open to work in various fields
Costea Adrian
Embedded Engineer specilizing in perception systems. Latest project was a adas camera calibration system.
Pratik
SWE with 15+ years of experience building and maintaining web apps and extensive BE infrastructure
You don't need to be technical. Just describe what's wrong and a verified developer will handle the rest.
Get HelpFrequently Asked Questions
Why does Google login fail in my published Base44 app but work in preview?
The published app uses a different URL than the editor preview. You need to add your published app's URL as an authorized redirect URI in the Google Cloud Console.
How do I fix redirect_uri_mismatch in Base44?
Go to your OAuth provider's console and add the exact callback URL your published Base44 app uses. The URL must match exactly, including https and the full path.