MStepan,
What version of System Adminstration and Diagnostics are you trying to load? The latest version is 6.2.13.0 which comes with the 6.2.2.13 database programming should load up just fine. If you version of software on the system is below that then you will need the plugin for your version of database programming.
As for how long Windows 10 has been out has nothing to do with how fast they get around to supporting their product on it unfortunately
Thanks,
TE