Thank you for your post. I have tested publishing and downloading the Java 8 Update 161 32bit and 64bit updates and am not seeing a failure to download.
Are you able to successfully download the update through IE outside of SCCM?
Yes, I can copy the URL into IE and the download the update - both versions. Bad part is I then have to create a package in SCUP to install the Java update. A big part of why we love Ivanti is simply publish and deploy, no other work involved with creating rules.
Does it make a difference if you open your SCCM console explicitly as an administrator? We definitely don't want you to have to use SCUP in order to get the updates into WSUS. We agree that it's nice to have the plugin to accomplish that.
If running the SCCM console explicitly as an administrator doesn't help, please go ahead and open a support case here and we can always see if there is something else causing the issue that I wasn't able to reproduce in my own environment.
I tried opening the SCCM console as administrator and got the same results when trying to download the latest Java. I will open a support case.