I've got a Windows Beta installer ready to test if it works on Windows arm64. Sigil still needs the Microsoft Visual C++ 2015-2022 Redistributable (x64) to run. I have no idea if that is installed by default on Windows arm64 or not. It's been a part of x64 Windows since Windows 10, so it's no longer included with the Windows Sigil installer.
You can download the beta from my personal github repository:
https://github.com/dougmassay/win-qt...s/tag/v5.212-1
It's the asset named Sigil-2.4.0-Beta-2-Windows-x64-Setup.exe
It's a tad bit bigger than the official release versions because I don't take the time to ultra compress betas or Continuous Integration builds.
Please let me know if this is enough to let Sigil install and run on Windows arm64.