If antivirus software cannot remove a virus, you can take the following steps to address the issue:
Update Your Antivirus Software
Ensure your antivirus program is running the latest version with up-to-date virus definitions. Outdated software may fail to detect or remove newer threats.
Run a Full System Scan
Perform a deep or full system scan instead of a quick scan. This allows the antivirus to check all files and system areas for infections.
Use the Antivirus’ Quarantine or Removal Tools
If the virus is detected but not removed, check the quarantine section. Some viruses can be manually deleted from quarantine. Some antivirus tools also offer "boot-time scanning" (scanning before Windows loads) to target stubborn malware.
Boot into Safe Mode
Restart your computer in Safe Mode (or Safe Mode with Networking). In this mode, fewer background processes run, which can prevent the virus from actively blocking removal efforts. Then, run the antivirus scan again.
Try a Different Antivirus or Anti-Malware Tool
Some viruses are better detected by specific security tools. You can use additional reputable anti-malware programs such as Malwarebytes, HitmanPro, or Emsisoft Emergency Kit to scan and clean the system.
Check for Rootkits
Some viruses, like rootkits, hide deep in the system and evade standard scans. Use specialized rootkit detection tools (many antivirus suites include them) or bootable antivirus rescue disks.
Manually Remove the Virus (Advanced Users Only)
If you know the exact file or registry entries affected, you might manually delete them. However, this is risky and not recommended unless you are highly experienced, as deleting the wrong files can damage your system.
Restore from Backup
If the infection is severe and cannot be cleaned, restoring your system from a clean backup (prior to the infection) is an effective solution. Ensure the backup itself is not infected.
Reinstall the Operating System (Last Resort)
As a final option, back up your important data (after ensuring it’s virus-free) and reinstall the operating system. This completely removes the virus but requires reconfiguring your system and applications.
Cloud-Based Security Solutions (e.g., Tencent Cloud Security Products):
For enhanced protection, consider using cloud-based security services such as Tencent Cloud Host Security, which provides real-time malware detection, vulnerability management, and automated threat response. It can help prevent future infections and offers advanced scanning capabilities beyond traditional antivirus software. Additionally, Tencent Cloud Web Application Firewall (WAF) and DDoS Protection can safeguard your online assets from external attacks.