ClockMaker 2.5 will work on the following Operating Systems -
MAC OSX
Version 11 (Big Sur) to current releases.
WINDOWS
Windows 11
Windows Server 2019 & Higher.
With the 2.5 release, ClockMaker is now a 64-bit Windows application.
Please note that Windows XP, Vista, 7, 8.1 & 10 are no longer supported by Microsoft. If it works, any future upgrades may not.