CompTIA A+ Core 2: PC Security Troubleshooting

Even well-secured PCs can experience weird security glitches, and restoring baselines is critical. In this course, learn how to identify and respond to PC security incidents, recognize symptoms like pop-ups, renamed files, blocked network access, and false antivirus alerts, use tools like Event Viewer, log files, safe mode, and system reimaging to restore compromised systems. Next, discover how to address browser hijacks, certificate errors, and proxy manipulation, as well as harden systems proactively, updating firewall configurations, and enforcing strong credential policies. Finally, explore how to troubleshoot network access and resolve DNS or domain trust issues, and respond to full-scale intrusions. This course is part of a collection that prepares learners for the CompTIA A+ Core 2 (220-1202) certification exam.