Reinstalled Brave with the IPFS Chrome extension and the IPFS Companion Desktop application this morning. Opened it, but only get this warning with the following description: 'this software needs to be updated. Contact the developer for more information.'
Currently running macOS Catalina 10.15
FYI this still is an issue for fresh installs
I ran into the same error this morning:

It can be fixed by IPFS devs "Notarizing" the app with Apple before releasing it: https://developer.apple.com/documentation/xcode/notarizing_macos_software_before_distribution
Reopening. We need someone with Mac for this:
Notarization requires Xcode 10 or later.
Building a new app for notarization requires macOS 10.13.6 or later.
Seems that the process can be automated via CI:
If you use an automated build system, you can integrate the notarization process into your existing build scripts. The
altoolandstaplercommand-line tools (included with Xcode) allow you to upload your software to the Apple notary service, and to staple the resulting ticket to your executable.
Ref.
No Mac at hands, but I moved the needle a bit:
For now, I think we could try to manually notarize v0.10.3:
signing file=dist/mac/IPFS Desktop.app identityName=Developer ID Application: Protocol Labs, Inc. (7Y229E2YRL) identityHash=C297E064280322D72444C869E7FC0F60B14E934E provisioningProfile=none
.dmg: .dmg from the internet anyway)Thanks to help from @olizilla and @autonome this is now fixed in 0.10.4 \o/
Details: https://github.com/ipfs-shipyard/ipfs-desktop/pull/1365
I get the "Is an app downloaded from the internet" warning, and click open, and Activity Monitor says the following processes are running, but there is no ipfs window, nor a dot next to the icon in the dock.
ipfs
IPFS Desktop
IPFS Desktop Helper (Renderer)
IPFS Desktop Helper (GPU)
__IPFS Desktop Version__ 0.14.0
Catalina 10.15.7
I do have two graphics cards (one additional) but am not sure if that's related:
NVIDIA GeForce GT 650M 512 MB
Intel HD Graphics 4000 1536 MB
And I only have 35GB of free disk space--would that be an issue?
After trying it out, I think I should mention here that I've run IPFS from the command line and it seems to work fine, including the local browser UI.
Most helpful comment
Thanks to help from @olizilla and @autonome this is now fixed in 0.10.4 \o/
0.10.3
0.10.4
Details: https://github.com/ipfs-shipyard/ipfs-desktop/pull/1365