Photoshop on macOS Catalina -- can't install

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  • Updated 1 month ago
  • (Edited)
I've used Photoshop CS2 on my Mac for years but I recently had to upgrade to Catalina, and CS2 isn't 64-bit so it doesn't work any more.

So I purchased the Lightroom/Photoshop subscription, and that doesn't seem to work either -- trying to run the installer from the DMG I get:

“Lightroom Installer” can’t be opened because Apple cannot check it for malicious software.


I realize Catalina is still in beta, so the answer might be "wait for Apple/Adobe to fix things" but I'm hoping someone has suggestions.

EDIT: I can get past that by holding down control while clicking "Open" on the DMG, but I immediately get the error on a second installer that the first evidently spawns. Then the LR installer gets to 13% or 14% and just hangs.


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Jim Geist

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Posted 2 months ago

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Photo of Jeffrey Tranberry

Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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Official Response
Old versions of Adobe software will not work on macOS Catalina: https://blogs.adobe.com/crawlspace/2019/07/upcoming-changes-to-photoshop-lightroom-os-support-with-m...

We are presently working with Apple to officially support the current versions of Photoshop, Lightroom and Lightroom Classic on macOS 10.15 when it is released later this year. NOTE: Running on beta OSes is not officially supported.
(Edited)