links blocked

HELP ME!!! When i click on the link n the e-mails or in other applications, programs, helps on line etc. happen nothing. Anyone of you coul tell me if the firewall comodo could block the links or help me to resolve this problem?
thanks a lot for a a little reply too.

Sorry you’ve had to wait so long for a reply.

Could you perhaps post some details of what browser you’re using and any security programmes?