Base44 deployment

Custom Domain Not Connecting to Base44 App

You've configured a custom domain for your Base44 app, but visiting the domain shows an error page, a default hosting page, or the connection times out entirely. The app continues to work on the default Base44 URL but not on your custom domain.

Custom domain configuration involves DNS settings that must be precisely correct, and errors in this process are common. The issue may be compounded by DNS propagation delays that make it hard to tell if your changes have taken effect.

Some users experience a partially working state: the domain loads but shows SSL certificate warnings, or it works without www but not with www (or vice versa).

Error Messages You Might See

DNS_PROBE_FINISHED_NXDOMAIN ERR_SSL_PROTOCOL_ERROR This site can't be reached SSL certificate problem: unable to get local issuer certificate
DNS_PROBE_FINISHED_NXDOMAINERR_SSL_PROTOCOL_ERRORThis site can't be reachedSSL certificate problem: unable to get local issuer certificate

Common Causes

  1. The CNAME or A record was not set correctly in the domain registrar's DNS settings
  2. DNS propagation has not completed yet (can take up to 48 hours)
  3. The custom domain was configured in Base44 but the DNS records point to the wrong target
  4. SSL certificate has not been provisioned yet for the custom domain
  5. The www and non-www versions are not both configured, causing one to fail

How to Fix It

Verify your DNS records using a tool like dnschecker.org to confirm the CNAME or A record is correctly set and has propagated. The target should match exactly what Base44's custom domain instructions specify.

If the DNS is correct but SSL shows a warning, the SSL certificate may still be provisioning. This can take up to an hour after DNS propagation completes.

For persistent custom domain issues, especially with subdomains, wildcard certificates, or complex DNS setups involving other services (like email on the same domain), a developer can help configure everything correctly.

Real developers can help you.

Kingsley Omage Kingsley Omage Fullstack software engineer passionate about AI Agents, blockchain, LLMs. AUXLE AUXLE I am a Full Stack Developer experienced in building Websites, Web apps and Cross Platform Mobile Apps for Startups and Companies. Vlad Temian Vlad Temian 15+ years shipping production infrastructure for startups. Former CTO at qed.builders (acquired by The Sandbox). Cursor ambassador and agentic tooling builder. I've scaled systems, automated deployments, and built observability tools for AI coding workflows. I specialize in taking vibe-coded apps from broken prototype to production-ready: fixing Supabase auth/RLS, Stripe integrations, deployment pipelines, and cleaning up AI-generated spaghetti. I build tools in this space (agentprobe, claudebin, micode) and understand both sides: how AI generates code and why it breaks. https://blog.vtemian.com/ Jen Jacobsen 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. Prakash Prajapati Prakash Prajapati I’m a Senior Python Developer specializing in building secure, scalable, and highly available systems. I work primarily with Python, Django, FastAPI, Docker, PostgreSQL, and modern AI tooling such as PydanticAI, focusing on clean architecture, strong design principles, and reliable DevOps practices. I enjoy solving complex engineering problems and designing systems that are maintainable, resilient, and built to scale. Jaime Orts-Caroff Jaime Orts-Caroff I'm a Senior Android developer, open to work in various fields PawelPloszaj PawelPloszaj I'm fronted developer with 10+ years of experience with big projects. I have small backend background too Sage Fulcher Sage Fulcher Hey I'm Sage! Im a Boston area software engineer who grew up in South Florida. Ive worked at a ton of cool places like a telehealth kidney care startup that took part in a billion dollar merger (Cricket health/Interwell health), a boutique design agency where I got to work on a ton of exciting startups including a photography education app, a collegiate Esports league and more (Philosophie), a data analytics as a service startup in Cambridge (MA) as well as at Phillips and MIT Lincoln Lab where I designed and developed novel network security visualizations and analytics. I've been writing code and furiously devoted to using computers to make people’s lives easier for about 17 years. My degree is in making computers make pretty lights and sounds. Outside of work I love hip hop, the Celtics, professional wrestling, magic the gathering, photography, drumming, and guitars (both making and playing them) Costea Adrian Costea Adrian Embedded Engineer specilizing in perception systems. Latest project was a adas camera calibration system. ISHANTDEEP SINGH ISHANTDEEP SINGH Senior Software Engineer with 7+ years of experience in React, JavaScript, TypeScript, Next.js, and Node.js. I’ve also worked as a tech lead for startups, owning end-to-end technical execution including architecture, development, scaling, and delivery. I bring a strong mix of hands-on coding, product thinking, and technical leadership, and I’m comfortable building products from scratch as well as improving and scaling existing systems.

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Frequently Asked Questions

How long does it take for a custom domain to work with Base44?

DNS propagation can take up to 48 hours, and SSL certificate provisioning can take an additional hour after that. Wait at least 24 hours before troubleshooting further.

What DNS records do I need for a custom domain on Base44?

You typically need a CNAME record pointing to the Base44-provided target URL. Check the exact instructions in your Base44 app's domain settings for the correct target value.

Related Base44 Issues

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