I have Windows xp sp3 and i installed Hotspot shield from anchorfree website. I tried it the first day and it worked fine, everytime i entered the shortcut on my desktop, it opened a new browser window or tab and it said i was connected. I turned the pc off and the next day it didn't work. Sometimes it gives me the "page can't be displayed" message, and sometimes it tries to connect and it can't. I have Avira antivirus installed.