connect to integration service using SSMS

This error can occur when you try to connect to a SQL Server 2005 Integration Services service from the current version of the SQL Server tools. Instead, add folders to the service configuration file to let the local Integration Services service manage packages on the SQL Server 2005 instance.

So apparently the message is not right. the instance is 2017 not 2005.I  tried to login to see maintainance plan packages.

I know there is the deployment of project model of SSIS packages using ssis catalog, but we still have a lot of old packages that using file system storage, and maintenance plan still stored here.

Microsoft should still make SSMS  backward compatibility with this. It is not good approach that  we have to install old version of SSMS to open 2017 instance of SSMS .

Thanks