Microsoft stopped offering 32 bit versions of Windows 10 to computer manufacturers in early 2020, and Windows 11 is only available for 64 bit systems. OrcaFlex and OrcaWave require 64 bit processes for efficient performance and from our own experience we cannot remember the last time we came across a user running on a 32 bit version of the operating system.

Accordingly, version 11.3, scheduled for release towards the end of 2022, will be the final version of OrcaFlex which can be installed on a 32 bit version of Windows. Future releases of OrcaFlex, after 11.3, will require 64 bit versions of Windows.

Note that we will continue supplying both 32 and 64 bit versions of the program executable files, but we strongly recommend that you use the 64 bit versions. We are making this change because it is becoming ever harder to test our installation package on 32 bit systems. Limiting support to 64 bit systems will also simplify the development of the installation package.