Get rid of alert messages from Taskbar

1.) Go to your Start menu, Control Panel and look for the Security Center icon. Click on that

Also, keep in mind that you need to be in the category view of your Control Panel for this to work. To get there, open up your Control Panel and at the upper left hand corner, click on "Switch to Category View" (if you're not already there).

2.) After opening the security center, look under the title Resources on the left hand side of the page. Click on "Change the way Security Center alerts me."

3.) From this screen, you can choose which things you want to change under the Alert Settings. Uncheck any that you don't want activated anymore. You probably will only want to change the Automatic Updates setting though, because the others deal with your antivirus and firewall and you should always have those running. When you're done, click OK.

You may want to restart your computer when you're finished just to make sure the changes take effect. Then there won't be any more annoying and frustrating messages!