ARM64 doesn't seem to install with nsis-web

[wartab]

Hello,

I'm sorry for being unable to provide a minimal reproduction at this time (we don't have an ARM64 system in our office), but it doesn't seem like the nsis-web installer does actually download ARM64 versions.

We use electron-builder 25.1.8.

One of our customers, who is on an ARM64 system got the following error when trying to run our installer (there were others as well):

I saw electron-updater 6.6.4 did address something like that, but this isn't the update process that fails, but the install process.

After checking further, I can see in our Github releases using the Refined Github Firefox extension that the *-arm64.nsis.7z is NEVER downloaded. Our users are business people, not tech people, so I doubt that Windows-ARM64 has 0 users, while the .deb package is downloaded 100+ times.

https://github.com/horussoftware/falco3_4/releases

latest.yaml does contain a reference to the arm64 file:

version: 3.5.17
files:
  - url: InstallFalco.exe
    sha512: 4RIMXHEdiof/NnMAe8iKwzvYxdqXoYj/HGAFmeKx0h5i79zncBUDzuxGykj/qmRe9yDlviIS2Rkkg42OLtIeVw==
path: InstallFalco.exe
sha512: 4RIMXHEdiof/NnMAe8iKwzvYxdqXoYj/HGAFmeKx0h5i79zncBUDzuxGykj/qmRe9yDlviIS2Rkkg42OLtIeVw==
packages:
  x64:
    size: 103176127
    sha512: aHhNfLW2BAR3IR5NuyTHHc87KdFRYG9G1JtWG0dZnaHJk2rcIlhgHGq1POarykUEE9azRt2RKkFRC0WFYgwMwA==
    blockMapSize: 106641
    path: falco-app-3.5.17-x64.nsis.7z
    file: falco-app-3.5.17-x64.nsis.7z
  arm64:
    size: 107011475
    sha512: 0MisXHn3fY9Uo4TN6PZE3VVBGIUw3lEp0Wd7/pPMYokw84x52eVUuEoE71ixKvw8AlnuXqPQUX2CnGeimJ2jEQ==
    blockMapSize: 112533
    path: falco-app-3.5.17-arm64.nsis.7z
    file: falco-app-3.5.17-arm64.nsis.7z
releaseDate: '2025-05-09T16:56:40.640Z'

Is this a known issue with electron-builder 25.1.8? I wasn't able to find anything related to this. Note that we used to have 32-bit Windows releases and those were being downloaded back then.

[mmaietta]

Hmmmm, nsis-web installation logic hasn't been altered in quite some time IIRC. I have an arm64 windows VM available, but don't recall running into this issue before either. Will need to take a deeper look once I can reconfigure/re-setup the localhost autoupdate. I thought that arm64 Windows could install x64 applications though, did that change?

[wartab]

I assume most arm64 Windows can install, otherwise we'd be getting many more reports, so I think you're right. But we had a handful of customers say it doesn't work.

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