Windows Defender is the recommended antivirus software for Windows computers. Using any other software in conjunction with Defender may cause problems such as an inability to shut down.

If you’re encountering malware issues and this scan doesn’t solve them, you can try using the Offline scan option on this page to perform a deeper, file-based scan.

A malware scan can take several hours to complete.

Although Malwarebytes offers a paid premium version with real-time protection, you can use the free version to scan your computer and remove viruses or malware at any time.

If Malwarebytes is recognized as a signed developer on your Mac, you won’t have this step.

Click Continue Click Agree Click Install Enter your username and password. Click Install Software Click Close when prompted.

Keep in mind that malware often attaches itself to files or programs. If you suspect that a program that you downloaded is the reason for an infection, do not back that file up to your external hard drive.

This process can take several hours, so make sure that your computer is plugged into a reliable power source.

Keep in mind that malware often attaches itself to files or programs. If you suspect that a program that you downloaded is the reason for an infection, do not back that file up to your external hard drive.

For some computers, you’ll see a spinning globe appear instead.

You’ll have to set up your Mac’s preferences once the installation is complete.