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Windows Defender is Blocking Avast Antivirus: 5 Ways to Fix It

Note that Windows Defender can block outdated Avast app

4 min. read

Updated onOctober 4, 2023

updated onOctober 4, 2023

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Key notes

Windows Defender is the built-in antivirus software for Windows PCs. It is effective in protecting your PC. However, some users use other antivirus services, running into issues with the Windows Defender. TheWindows Defenderblocking avast is a common complaint.

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Why is Windows Defender blocking Avast?

Why is Windows Defender blocking Avast?

Windows Defender is known for not working with other antivirus software. It will conflict with antivirus software like Avast, which has a firewall feature on it. So, the common cause of issues betweenWindows Defender and Avast antivirusis that the two programs are conflicting.

Furthermore, a couple of factors can cause Windows Defender to block the Avast antivirus software on your PC. Some are:

Regardless of the reason, Avast, you can fix the problem by trying some fixes on your PC.

What can I do if Windows Defender is blocking Avast?

What can I do if Windows Defender is blocking Avast?

Go through the following preliminary checks:

If you still can’t fix it, try the solutions below.

1. Reset Avast

Restarting the Avast client on your PC will fix any problems preventing it from running as it should.

2. Disable Windows Defender’s Real-time protection

Disabling theWindows Defender antiviruson your PC can fix any interference preventing Windows Activation from connecting.

3. Disable Windows Firewall

Disabling the Windows Defender Firewallcan resolve any conflict between the service and Avast.

4. Stop Windows Insider Program

5. Uninstall the Avast antivirus with Utility

This tool willuninstall the Avast appand clear every file that it can from your PC, allowing you to install a clean one.

Conclusively, you can checkwhat to do if Avast is not updating the virus definitionsfor some reason. Also, you can check what to do whenAvast is blocking Remote Desktopon your PC.

For further questions and suggestions, kindly use the comments section below.

More about the topics:Avast Free Antivirus,Windows Defender issues

Henderson Jayden Harper

Windows Software Expert

Passionate about technology, Crypto, software, Windows, and everything computer-related, he spends most of his time developing new skills and learning more about the tech world.

He also enjoys gaming, writing, walking his dog, and reading and learning about new cultures. He also enjoys spending private time connecting with nature.

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Henderson Jayden Harper

Windows Software Expert

Passionate about technology, Crypto, software, Windows, and everything computer-related, he spends most of his time developing new skills.