Possible error blocking web site

Hi TR,
According to your description it doesn't seems to be connected to AVG.
Thanks

With no warning I am unable to access Yahoo Mail or Messenger.  My password is not accepted.  I try to reset password and thats not accepted either.  I get message that password isn't strong enough when in fact it is. I contacted Yahoo support by phone and they told me they could open it at their end but possibly another program is not recognizing Yahoo passwords.  Is it possible AVG is doing that or have I been hacked.  Only Yahoo is affected at the moment.

Hi TR,
According to your description it doesn't seems to be connected to AVG.
Thanks