

So, if you are seeing a warning about an app it’s a good indication that the app you are using might encounter issues if you try to run it in Mojave.Įven if it does run in Mojave, the next version of macOS will not run 32-bit apps at all, so it’s soon going to be time to upgrade to a newer version of your old app, or find an alternative. Apple indicated that 32-bit support in Mojave will be with compromises. That doesn’t necessarily mean that the app will run without issues. Then in June 2018, while announcing macOS Mojave, Apple’s vice president of software Sebastien Marineau stated that: “This year, we’re announcing that macOS Mojave is the last release to support 32-bit, at all.” The warning indicated that: “This app needs to be updated by its developer to improve compatibility”. Then in April 2018 Mac users running High Sierra started seeing warnings if they tried to open a 32-bit app stating that the app ‘is not optimised for your Mac’. Peripherals that use drivers that haven’t been updatedĪpple indicated back in June 2017 that macOS 10.13 (High Sierra) would be the last Mac operating system to support 32-bit apps “without compromise”.Apps that have their own implementation of new Mojave features like Dark Mode, or rely on features removed from Mojave.Old apps that are no longer supported by the developer.If your apps fit into one of the following categories it’s likely that you will experience problems: There are a few areas where there are likely to be compatibility issues with Mojave and certain apps.
