I have been using Yahoo messenger well ever since I put Avast on my cp Yahoo messenger ??? will not work How do I unblock it to get to work can any one help me … 
Thank you, ;D
MaryBeth
Hi twilight1960, welcome to the forum.
How long ago did you install Avast?
What is the OS?
What AV was previously installed, and did you uninstall it?
Have you had any virus alerts?
What other security software is installed?
And (revealing my thickness) what is a CP?