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Legacy System Extension on MacOS

https://forum.blackmagicdesign.com/viewtopic.php?f=18&t=226222

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Legacy System Extension on MacOS

PostPosted: Fri Aug 22, 2025 6:49 pm
by Ellory Yu
I'm on MacOS Sequoia (15.5) and today got a popup notification on "Legacy System Extension" (see screenshot below) after signing on. Apparently the system extension that could be incompatible with future versions of MacOS is signed by BMD and it says to contact the developer (BMD). How do we find out which BMD extension is considered as Legacy?

Screenshot 2025-08-22 at 11.18.36 AM.png
Screenshot 2025-08-22 at 11.18.36 AM.png (264.99 KiB) Viewed 4083 times

Screenshot 2025-08-22 at 11.19.28 AM.png
Screenshot 2025-08-22 at 11.19.28 AM.png (850.27 KiB) Viewed 4083 times

Re: Legacy System Extension on MacOS

PostPosted: Sat Aug 23, 2025 6:54 pm
by Reynaud Venter
Is a Decklink present on that system with Desktop Video installed?

Re: Legacy System Extension on MacOS

PostPosted: Mon Aug 25, 2025 5:31 am
by Ellory Yu
Reynaud Venter wrote:Is a Decklink present on that system with Desktop Video installed?

No. It is using an UltraStudio Mini Monitor instead of a Decklink. I attribute it to the Desktop Video driver that’s used for the UltraStudio. But it doesn’t tell me what extensions are not going to be supported but just to contact the developer and let them know.