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Help for Little Snitch

No, Little Snitch 5 cannot be used on macOS Catalina. It requires macOS Big Sur or later. If you want to use Little Snitch on Catalina, you have to install version 4 instead.

→ Download Little Snitch 4

Background

Starting with version 5, Little Snitch is therefore using Apple’s Network Extension framework, which replaces the previous kernel extension API, that is no longer supported on macOS Big Sur.

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