Hello Jamie,
We will help you to resolve the issue. Could you please share the screenshot (https://support.avg.com/SupportArticleView?urlname=AVG-Create-screenshot) of the message page which you got after OS update?
You can post the screenshot here in your topic. Click on Answer & then click on the Image [mountain symbol] & follow the instructions.
Also, let us know the operating system installed on the PC. Thanks in advance.
got this after an update.
Don't know what it means or what to do with it.
Legacy System Extension
Existing software on your system loaded a system extension signed by "AVG Technologies CZ, s.r.o."
which will be incompatible with a future version of ma. Contact the developer for support.
Thank you for the screenshot, Jamie
Let me clarify this for you.
AVG AntiVirus and AVG Internet Security for Mac currently use kernel extensions to provide real-time protection for your Mac. We are aware that the Apple guidelines for software developers are changing and we are actively working to improve our products so that they are fully compliant with the upcoming changes. Our transition from kernel extensions to Endpoint Security and Network Extension frameworks is expected to be ready in time for the next major macOS release.
For more details about legacy system extensions, refer to the following announcement from Apple:
About system extensions and macOS - Apple Support
Thank you for understanding.
Mac computer with Catalina operating system.