Norton antivirus is used and loved by millions of people around the world. It not only offers antivirus protection but also comes with real-time threat protection, password manager, firewall, and more. The chance for an error to occur with the Norton antivirus software is very low. However, there are some errors encountered by the users. On this page, you’re going to see how to fix the Norton antivirus error 21 on your computer. The Norton error 21 occurs when the Windows registers related to the Norton antivirus software are not configured correctly. To fix this error code, try the simple and quick troubleshooting instructions given below. Initially, restart your computer because, in most cases, it can resolve these kinds of errors. After restarting your computer, check if the Norton error 21 is fixed. If not, perform the next method given below.
Reinstalling Norton can help you to resolve these kinds of errors. To reinstall the Norton antivirus on your computer, use the Norton Remove and Reinstall tool.
If the reinstallation process also failed to resolve the Norton error 21 on your computer, then contact us.