How can I enable SonarLint in Visual Studio automatically?
Every time I open Visual Studio I must to enable it manually, because it is always disabled
Try uninstalling and then installing again Sonar Lint for Visual Studio.
A possible reason for this behavior is if Sonar Lint was installed twice in your Visual Studio. I don't know how this could happen, but there is a tool that can detect this situation: DuplicateExtensionFinder. Here is a GitHub comment that talks about this behavior Source