Thank you for your quick response.
I guess we use an on-premise version of SonarQube, since it states Enterprise Edition Version 8.9.1 (build 44547) which seems comparably old. Unfortunately I am a developer and only responsible for the build pipeline and our IT department seems a bit conservative with SonarQube updates, since there are a lot of different projects within our company that use SonarQube for analysis and they do not want to break it out of nothing for any team. But if SonarQube 9.2 is already released and already capable for the new features, I will request an update.
But still I am a bit confused with the current issue itself. If I understand you correctly the main problem on client side is that the Sonar-Scanner needs the .NET 5 runtime to be installed and code must not use C#10 features. Both requirements are satisfied for us but still Sonar-Scanner fails at some point since using .NET 6 in projects with:
The SonarScanner for MSBuild integration failed: SonarQube was unable to collect the required information about your projects.
Is this a known issue that will be fixed with complete .NET 6 support or do you want me to file a separate ticket, since the error message seems very generic and might not be related to .NET 6?