Taking a look at scripts/windows/download-dev-bundle.ps1 there is a comment to indicate that only 32-bit pre-built bundles are available.
Is there any specific reason why 64-bit builds aren’t available at the moment? Any known issues and/or workarounds?
I’ve been attempting to use generate-dev-bundle.ps1 to create a 64-bit dev_bundle, but it turns out to be surprisingly difficult to get every one of Meteor’s binary dependencies to build with a given Visual Studio version.
Update: I’ve just also seen the comments in scripts\dev-bundle-server-package.js regarding the patched version of fibers on Windows. Perhaps this has some bearing on this question?