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- Tue Mar 24, 2020 12:41 pm
- Forum: MacOS Discussion Forum
- Topic: Legacy System Extension warning on macOS 10.15.4
- Replies: 13
- Views: 13755
Legacy System Extension warning on macOS 10.15.4
Since updating to macOS 10.15.4 I get a big warning that says "Legacy System Extension." The body reads, "Existing software on your system loaded a system extension signed by “3Dconnexion S.A.M.” which will be incompatible with a future version of macOS. Contact the developer for supp...