LU error: Updated completed but 0% downloaded

Hello. As the title suggests, I ran LU (using 3.3, Enterprise) and it shows completed on all steps but stays at 0% downloaded.

Prior to this (2 months ago), I was completely unable to download any update. Our office's IT is unable to figure out why my roaming profile keeps getting a 1863 error despite several attempts at re-installing LU. As a workaround, I now run LU as a local user; it worked fine until 3 weeks ago.