Security Install security software and remove any malware from computerReview current level of security on PC or MacRun Anti-Malware tools to make sure system is cleanRemove third part Antivirus software requiring a subscriptionInstall the latest version of Microsoft security and enable weekly scansVerify that Virus protection, Firewall and Network Protection and App / Browser controls are enabledReset all installed browsers and remove any add-ons or extensions.Run a system cleaner to remove all unnecessary cookies and cache plus temp dataRun an registry cleaner to remove invalid or broken registry entries