Hi Carolus,
I assume you mean messages concerning the Windows update utility and you not having it set to automatically download and install. Well many of us here advise that procedure anyway because as you say it's best to know what is being installed. You can stop the messages troubling you however and all you need to do is right click on the flag icon and click 'Open Action Centre'. Look under the Security tab and under windows update you should see a setting to turn the messages off.
I have my Windows update utility set to 'check for updates but ask me whether to download and install them'. That way you still get notified about any updates (usually via the lock screen) but still retain control over what gets installed.