To get the working today, especially if you are facing "torrent fail" errors or installation issues on modern versions of Windows, it is best to avoid standard web installers that often fail due to defunct Microsoft servers. Reliable Sources for Zune Software
Since the official Microsoft download links are largely unsupported, the community recommends the following:
: This pinned resource often contains a "Complete Package" (~270MB) that includes an offline installer, which is more reliable than the original web-based installers. Steps to Fix Installation Failures