So, which Apple software in 10.13.4 is likely to “fail silently” when in this new 64-bit testing mode? But remaining 32-bit bundles form quite a distinctive pattern, or some extraordinary coincidence. This could, of course, simply be that Apple hasn’t got round to updating its own products yet. In doing so, it reveals that many of the components included in High Sierra 10.13.4 are still not 64-bit. My own tool 32-bitCheck, available from Downloads above, goes deeper than Apple’s app check, and checks all software bundles. Other types of software may fail silently, such as 32-bit versions of Dashboard and WebKit plugins, preference panes, and background processes.” Launching an app that depends on 32-bit software results in a notification that the application can’t be opened.
“The 64-bit testing mode prevents 32-bit processes from launching.
As Apple makes clear in its documentation for High Sierra’s new (experts only) 64-bit testing mode:
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In doing so, it appears to have revealed some of its own intentions over macOS and its own apps, including the future of QuickTime and DVD support.įollow Apple’s advice on how to check whether your Mac’s apps are still 32-bit, and you’ll only see the tip of the iceberg. Apple has started the process of naming and shaming those apps which still don’t run in 64-bit mode, in readiness for macOS 10.14 later this year.
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