switching apps from 32bit to 64 bits.
32 bit apps will no longer work when apple switches over to 64 bits. Can we upgrade them? How?
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Apple switched to 64bit about ten years ago. If you are going to keep on running Mojave you do not need to do anything 32bit apps will continue to run.
The next macOS which is due out this month called 10.15 Catalina will not run 32bit apps. Use this app to search for any 32bit apps you have, https://www.stclairsoft.com/Go64/ then go to the developers website and see if they offer a 64bit update.
