3.5.5_45028 magnet link:
magnet:?xt=urn:btih:4DBF526A21DB0BFA2303891A29CA5141F24613AC
or simply use the 40 digit HASH on its own:
4DBF526A21DB0BFA2303891A29CA5141F24613AC
File size: 2.16 MB (2,271,416 bytes) / Digitally Signed: BitTorrent Inc. 14 January 2019 23:17:51
Alternatively:
Beta Download (multiple tries may be required):
http://download-new.utorrent.com/endpoint/utorrent/os/windows/track/beta
File size: 2.16 MB (2,271,416 bytes) / Digitally Signed: BitTorrent Inc. 14 January 2019 23:17:51