Antivirus Action is a fake security application (Antivirus IS, Security Suite, Antivir Solution Pro, AV Security Suite, AntiSpyware Soft, Antivirus Suite and Antivirus Soft clone)
The rogue detects fake infections and prevents legit softwares execution, displaying alert messages to scare users.
If your PC is infected with Antivirus Action follow bleepingcomputer's removal guide.