Why I am getting error "Invalid Host header", when launching website using a browser

I have created a docker droplet on digital ocean to host my application. The application is working well, when called from a browser using ip address I have booked a domain name using godaddy and have assign ns1, ns2, ns3 in godaddy as instructed. I have also created a “A” variable in digital ocean to assign domain name to ip address I can ping the domain name ( from command prompt and get reply, but when I use a browser to launch the application using domain name, it gives me error “Invalid Host header” I have another droplet in digital ocean, which is not a docker droplet, which works well for same setting

Please help

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It sounds like that your application is rejecting the access from your domain name. What is the exact application that you’ve deployed on your new droplet? My guess would be that you might have to add your domain name to the trusted source list of your application, but of course, this would depend on the application itself.

Hope that this helps! Regards, Bobby