Custom Uninstaller for Comodo Internet Security: Easy Removal Methods

Troubleshooting: Use a Custom Uninstaller to Remove Comodo Internet Security

If the standard uninstall for Comodo Internet Security (CIS) fails, using a custom uninstaller can resolve leftover files, services, registry entries, and driver hooks. This guide explains a step-by-step troubleshooting process, when to use a custom uninstaller, and how to complete removal safely.

When to use a custom uninstaller

• Built-in uninstaller fails, hangs, or reports errors.
• Comodo components (tray icon, services, drivers) remain after uninstall.
• Reinstall or upgrade fails due to leftover files or registry keys.
• System instability or networking issues suspected to be caused by CIS drivers.

Preparations (back up and safety)

1. Create a system restore point.
2. Back up important files or export browser bookmarks as a precaution.
3. Download the latest CIS installer (matching your version) from Comodo’s site — useful for repair or component extraction.
4. Have an admin account and know the computer’s administrator password.

Step 1 — Attempt official uninstall

1. Sign in as administrator.
2. Open Settings > Apps (Windows ⁄₁₁) or Control Panel > Programs & Features (older versions).
3. Select Comodo Internet Security and click Uninstall.
4. Restart if prompted.
   If this succeeds, verify no Comodo services, drivers, or folders remain (see Step 5). If it fails or leaves remnants, continue.

Step 2 — Stop Comodo services and processes

1. Open Task Manager (Ctrl+Shift+Esc). End processes like cfp.exe, cavwp.exe, cmdagent.exe, and other Comodo-named processes.
2. Open Services (services.msc). Stop services named Comodo(e.g., Comodo Internet Security, CAV). Set their Startup type to Manual or Disabled temporarily.
3. Reboot into Safe Mode if services cannot be stopped normally (press Shift while clicking Restart → Troubleshoot → Advanced options → Startup Settings → Safe Mode).

Step 3 — Use a custom uninstaller tool

Use a reputable third-party uninstaller that supports forced removal and deep scans:

• Revo Uninstaller (Free/Pro)
• IObit Uninstaller (Free/Pro)
• Geek Uninstaller (Free/Portable)

Procedure:

1. Install or run the portable uninstaller as administrator.
2. Locate Comodo Internet Security in the program list. Choose “Uninstall” or “Forced Uninstall.”
3. Let the tool run the program’s own uninstaller first. When it finishes or errors, allow the tool to scan for leftover files, folders, and registry entries.
4. Review scan results and remove Comodo-related leftovers. Be cautious: uninstaller tools may list shared libraries — skip items you’re unsure about.

Step 4 — Manual cleanup (registry, files, drivers)

Only proceed if comfortable editing the system. Mistakes can harm Windows.

Files/folders to check and remove:

• C:\Program Files\Comodo
• C:\Program Files (x86)\Comodo
• C:\ProgramData\Comodo
• %APPDATA%\Comodo

Registry keys to search (use regedit with admin rights; export keys before deleting):

• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services* (look for Comodo service names)
• HKEY_LOCAL_MACHINE\SOFTWARE\Comodo (and SOFTWARE\Wow6432Node\Comodo on 64-bit)
• HKEY_CURRENTUSER\Software\Comodo

Driver and network filter cleanup:

1. Open Device Manager (devmgmt.msc) → View → Show hidden devices.
2. Under Non-Plug and Play Drivers or Network adapters, look for Comodo-related drivers (e.g., network filter drivers). Right-click → Uninstall.
3. If drivers fail to uninstall, use pnputil or sc delete from an elevated Command Prompt:
   • To remove a service: sc delete
   • To remove INF-installed drivers: pnputil /delete-driver /uninstall /force

Clear Winsock and network stacks (if networking issues persist):

• Open elevated Command Prompt and run:

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  netsh winsock reset netsh int ip reset ipconfig /flushdns 

• Reboot after running these.

Step 5 — Verify removal

• Check Services and Task Manager for Comodo entries.
• Search Program Files, ProgramData, and registry for “Comodo” and remove remaining items cautiously.
• Confirm network connectivity and Windows Defender status. Run Windows Security → Virus & threat protection to ensure real-time protection is enabled if needed.

Step 6 — Reinstall or replace antivirus (optional)

If you removed CIS to reinstall or switch products:

1. Reboot.
2. Install the new security product or the latest CIS installer if reinstalling.
3. Run a full system scan and update definitions.

Troubleshooting tips

• If an item cannot be deleted, boot from Windows PE or a Linux live USB to remove locked files.
• Use Autoruns (Sysinternals) to find persistent startup entries.
• If registry edits feel risky, use a registry cleaner sparingly and only after backups.
• For driver signature or permission issues, disable driver signature enforcement temporarily (Advanced Startup) — restore it immediately after.

When to seek professional help

• System is unstable after removal or network stack remains broken.
• Multiple drivers refuse to uninstall or system won’t boot.
• You’re uncomfortable editing the registry or removing drivers manually.

Following these steps should remove Comodo Internet Security even when the built-in uninstaller fails. If you want, I can produce specific command lines or a printable checklist for your Windows version.