Dear Sir or Madam,
I have registered in Netacad, after I installed Packet tracer the software shows to me a black screen. recently I know this black screen contains the user name and password for Netacad.
the issue I can not log in and I used the PT normally until I disconnect my Internet if I closed the black screen the PT totally shows me authentication failed. need your support to used PT and continues my studying.
attached to you pictures of the black screen and failure message.
yours futhfully,
Dahir
