SSL Certificate Errors on Base44 Published App
Your published Base44 app shows SSL certificate warnings in the browser. Users see "Not Secure" in the address bar, a certificate error page they must click through, or mixed content warnings where some resources load over HTTP instead of HTTPS.
SSL issues erode user trust and can prevent some browsers from loading the app at all. Modern browsers increasingly block mixed content and show prominent warnings for certificate issues, making this a critical problem for any production app.
The issue may affect only your custom domain while the default Base44 URL works fine with SSL, or it may manifest as intermittent certificate errors that come and go.
Error Messages You Might See
Common Causes
- The SSL certificate for a custom domain has not been provisioned or has expired
- Mixed content: some images, scripts, or API calls use HTTP instead of HTTPS
- The app references hardcoded HTTP URLs in custom code or embedded content
- DNS changes disrupted the SSL certificate renewal process
How to Fix It
If using a custom domain, check whether the SSL certificate has been provisioned by visiting the domain and inspecting the certificate in your browser. If it hasn't been provisioned, re-verify your DNS settings and trigger a re-provisioning if Base44 offers that option.
For mixed content warnings, search your app's custom code and component settings for any http:// URLs and change them to https://. Embedded iframes, images, and external scripts are common culprits.
Persistent SSL issues, especially on custom domains, may require developer intervention to properly configure the certificate chain and ensure all resources are served securely.
Real developers can help you.
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.
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AUXLE
I am a Full Stack Developer experienced in building Websites, Web apps and Cross Platform Mobile Apps for Startups and Companies.
Tejas Chokhawala
Full-stack engineer with 5 years experience building production web apps using React, Next.js and TypeScript.
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Meïr Ankri
Full-stack developer specializing in React / Next.js / Node.js with 6+ years of experience. I've worked across various sectors including automotive (Reezocar/Société Générale), healthcare (Medical Link SaaS), and e-commerce (Glasman). I build web apps end-to-end, from architecture to production, with a focus on scalability, performance, and code quality. I also mentor junior developers and contribute to technical decisions and code reviews.
Anthony Akpan
Developer with 8 years of experience building softwares fro startups
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.
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Caio Rodrigues
I'm a full-stack developer focused on building practical and scalable web applications. My main experience is with **React, TypeScript, and modern frontend architectures**, where I prioritize clean code, component reusability, and maintainable project structures.
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Vlad Temian
15+ years shipping production infrastructure for startups. Former CTO at qed.builders (acquired by The Sandbox).
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Daniel Vázquez
Software Engineer with over 10 years of experience on Startups, Government, big tech industry & consulting.
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 my Base44 app show 'Not Secure'?
This usually means the SSL certificate isn't properly configured or there's mixed content (some resources loading over HTTP). Check your custom domain SSL settings and search for any hardcoded HTTP URLs.
How do I fix mixed content warnings in Base44?
Find any images, scripts, or API calls that use http:// URLs and change them to https://. This includes embedded content, external scripts, and image URLs in your database.