Have you tried to remove all updates/patches/downloads that are linked to sysinternals and retry? All the tools on the SysInternals website are also available as separate downloads, but also as one whole zipped archive. Then it is called: SysInternals Suite
and this 23MByte download (give or take) shouldn't be a problem, even for bandwidth starved types of internet connection anywhere in the world.
Personally, I always download the suite whenever there is a new version of it, because I deem this software to be essential on any Windows installation. As far as I know, any of the software from SysInternals is updated irregularly, so you don't need to redownload the same tools over and over whenever you decide to use WSUS.
When taking a look at your screenshot, it appears that the WSUS software is not able to download directly from the sysinternals website. Whether that is a configuration problem on their end or on yours, is not that clear. Not to be offensive or anything, but it is more likely that the configuration mistake occurs on your end.
Please take into account that it won't be long anymore before Microsoft pulls the support plug on Windows 7 very soon, meaning that Microsoft completely stops making any patch/update/download for Windows 7. Microsoft really wants you to migrate to Windows 10 and without any type of support for Windows 7, you probably should...from a security standpoint, at least. Then there is the debate about (lack of) privacy with Windows 10...but that is a different can of worms...and there appears to be no end to that supply of cans in the future.
Anyway, after support for Windows 7 stops, your problems with Windows 7 updates through WSUS will automatically stop too. You might consider that the proverbial 'silver lining'.