Sitecore Rocks 2.1.89.0 connection error to Sitecore 9.1.0

Question

When I try to connect to my sitecore 9.1.0 instance with Sitecore Rocks 2.1.89 I catch a weird error:

The content type text/html of the response message does not match the content type of the binding (application/soap+xml; charset=utf-8). If using a custom encoder, be sure that the IsContentTypeSupported method is implemented properly. The first 1024 bytes of the response were: ' ...

But when I connect to another sitecore 9.1.0 website - it works good.

What is wrong with my first instance?

Answer 1

You need to make sure that:

1. you able to rich out your sitecore instance by http protocol
2. site https binding "Require Server Name Indication" setting is unchecked
3. you don't have any URL Rewrite rules for redirect from http to https

After all these steps you can create a new connection:

Just checked it on my local env on the same Sitecore 9.1.0 instance and it works fine.