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

[Aw79]

Plugin MacPassHTTP can't be opened but show the following error:

macOS Catalina: Version 10.15 Beta (19A582a)
MacPass: Version 0.7.9 (21570)

Plugin has been downloaded in Safari from https://github.com/MacPass/MacPassHTTP/releases/tag/0.3.2

[ssdowd]

Same issue for Catalina 10.15 release.

[Cybs]

+1

[oberlon]

Change Attribute of plugin works
xattr -d com.apple.quarantine ~/Library/Application\ Support/MacPass/MacPassHTTP.mpplugin

[Aw79]

Thanks @oberlon - it worked for me

[mstarke]

This error arises because Catalina requires a notarized bundle in order to remove the quarantine bit. I will update the release with a notarized version as soon as I get to it. This then should fix the issue.