What to Do If a Virus Closes Your Browser and Blocks Antivirus Downloads

If your computer is infected with a virus that closes browsers, blocks access to antivirus websites, and prevents you from downloading removal tools, it’s crucial to act quickly and effectively. In this guide, we’ll explain how to get rid of such malware and restore normal system functionality.

Step 1: Restart in Safe Mode

The first and often most effective step is to restart your computer in Safe Mode. This allows the system to boot with minimal programs and drivers, helping to bypass the virus’s restrictions.

  • For Windows 10 and Windows 11: Hold down Shift and select "Restart" from the Start menu. Then go to "Troubleshoot" → "Advanced options" → "Startup Settings" and choose Safe Mode with Networking.
  • For Windows 7 and earlier versions: Restart the computer and repeatedly press the F8 key before the Windows logo appears. Choose "Safe Mode with Networking" from the list.

Step 2: Use an Offline Antivirus Tool

If the virus blocks antivirus downloads, try using an offline scanner. These tools can be downloaded on another computer and run from a USB drive:

Step 3: Use Task Manager to End Suspicious Processes

If the virus continues to interfere, open Task Manager (Ctrl + Shift + Esc) and look for suspicious processes. These may have unfamiliar or strange names. End these processes to regain control of your system and browser.

Step 4: Clear Temporary Files and Registry Entries

Malware often hides in temporary file folders. Use the built-in Windows tool to clear these files:

cleanmgr

Run this command through the "Run" dialog (Win + R) and delete all temporary files. It’s also recommended to use tools like CCleaner to clean up the registry and remove unnecessary entries.

Step 5: Perform a Full System Scan After Unblocking

Once you’ve removed the block, immediately run a full system scan using your installed antivirus or a reliable tool like Bitdefender Free Antivirus. This will help detect and eliminate any remaining malware traces.

Step 6: Restore Your System Using a Restore Point

If the previous steps didn’t resolve the issue, try restoring your system using a restore point. This will revert your computer to a state before the infection occurred:

  • Search for "System Restore" in Windows and select "Create a restore point."
  • Select an appropriate restore point and follow the on-screen instructions.

Step 7: Prevent Future Infections

To avoid future infections, follow these simple tips:

  • Use a reliable antivirus with up-to-date threat databases.
  • Avoid downloading files from untrusted sources and steer clear of suspicious websites.
  • Keep your operating system and software updated to patch security vulnerabilities.

By following these steps, you can quickly remove the blocking virus and minimize the risk of future infections.