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CompTIA A+ Core 2 220-1202 · Domain 3: Software troubleshooting

PC security issues: unable to reach the network, fake antivirus alerts, altered or missing system files, unwanted OS notifications, failed OS updates

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Last reviewed September 30, 2026 · Leer en español

Some symptoms on a Windows PC are strong signs of malware rather than ordinary faults. The exam expects you to recognize them, rule out the everyday explanations, and then respond with the malware removal procedure instead of simply patching over the symptom. Malware often damages the very things that would help you remove it, such as network access to security sites, update services and system files, so these symptoms are clues about what it is trying to protect itself from.

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