While the official site generally only provides the latest stable release, you can find historical versions through reputable software archives. Where to Find Older Versions
Some private trackers still whitelist specific legacy versions of uTorrent while banning newer versions due to concerns over security leaks or data reporting. Do you use a 2.x or older version of uT? - Page 3 - Forums utorrent older version link
Finding a uTorrent Older Version Link: A Guide to Legacy Builds While the official site generally only provides the