Question: Q: System Extension Gets Blocked But There Is No Allow Button In System Settings I installed BlueStacks into my computer and opened it. When it asked me to allow an extension it needed in order for it to be used, I went to system preferences to allow the extension but it wasn't there. Fortunately, thanks to the team’s tireless efforts at providing the best possible service, the latest version of BlueStacks is fully compatible with MacOS 11 Big Sur, allowing you to, once again, install and play your favorite Android games on your Mac. BlueStacks on macOS 11 Big Sur: Update to Version 4.240.5.
System extensions work in the background to extend the functionality of your Mac. Some apps install kernel extensions, or kexts—a kind of system extension that works using older methods that aren't as secure or reliable as modern alternatives. Your Mac identifies these as legacy system extensions.
In 2019, Apple informed developers that macOS Catalina will be the last macOS to fully support legacy system extensions, and we've been working with developers to transition their software.
Bluestacks Mac Big Sur
If you get an alert about a system extension
You may see an alert on your Mac that says that a program loaded or tried to load a system extension signed by the developer of that extension.
Bluestacks Not Launching
- The alert may ask you to open Security & Privacy preferences to allow the extension. You may also need to restart your Mac.
- The alert may ask you to contact the developer for support because the extension needs to be updated or will be incompatible with a future version of macOS.
- The alert may inform you that it will damage your computer and has been blocked.
On a Mac with Apple silicon, you may first need to use Startup Security Utility to set the security policy to Reduced Security and select the “Allow user management of kernel extensions from identified developers” checkbox.
System Extension Blocked Mac Bluestacks
System administrators can also use Mobile Device Management (MDM) to manage legacy system extensions.
If necessary, please contact the developer to learn whether an updated version of their software is available or planned. They may also be able to explain how to remove or disable the extension, and the consequences of doing so.
Technical details for developers are available in Deprecated Kernel Extensions and System Extension Alternatives.