@thre-isdd This is not a solution, but here how I managed to make it work.

1. downloaded 7-zip 32bit at http://www.7-zip.org/a/7z1604.exe
2. installed it via wine
3. copied .exe and .dll from .wine/drive_c/Program Files/7-Zip to electron-winstaller/vendor

@paulcbetts , is there any reason why the 7z.exe is in 64 bit format? I guess that the 32 bit version would also work in x64 machines and would not suppose a problem when building 32 bits applications.

ah, yes 😃 i agree, i could not get wine64 to work. wine32 and swapping out 7z with the 32-bit version worked for me per the above suggestions.

me too.

electron-packager . exe --platform win32 --arch x64 --out dist/

Packaging app for platform win32 x64 using electron v4.0.0 WARNING: Found ‘electron’ but not as a devDependency, pruning anyway rcedit.exe failed with exit code 193. wine: Bad EXE format for Z:\usr\local\lib\node_modules\electron-packager\node_modules\rcedit\bin\rcedit.exe.

+1 on @robertohuertasm’s question. The problem with assuming 64 bit is that 64bit support in Wine is officially sketchy, see their FAQ

Probably 64bit 7z.exe is an artifact of a recent SquirrelWin update? Only reason I could think of is that maybe 7z 32 bit has issues with very large files (the magical 2GB barrier)?

Anyway, if at all possible, I would vote for a downgrade to 32 bit 7z.exe.

Yep, the version of 7-Zip included is 64-bit, you’ll need to switch to 64-bit Wine instead.

OS X mono 5.0.1.1 wine 2.10

I get error when wine is 32:

System.AggregateException: One or more errors occurred. —> System.Exception: err:process:create_process 64-bit application L"Z:\Users\baize\Work\agent\client\node_modules\electron-winstaller\vendor\7z.exe" not supported in 32-bit prefix

if I use 64 wine build is ok, but on first install i get error: squirrel.exe 0xc000007b