KB4019112 problem

I am having a similar problem. Yours involves trying to install a downloaded file while mine is one in which the file will not download at all. This update was one of three in which the other two downloaded and installed perfectly. The downloading would fail and when I selected "Try Again" it would resume where it left off. It slowly crept up to 98% after many retries and then I got the failure message again. I clicked on "Try Again" and it showed progress as 21%. I have a download limit so I am not going to waste my time repeatedly trying to download this file.

Well, leaving these systems all night and they are still where they are at. A friend of mine is also having an issue, but in his case he was installing the NET framework KB4019112. All looked fine until he got to the desktop where his system froze, some icons became blank. Left system on all night as well and this morning still frozen system.

Update: So I got my systems back by method of shutting service down and install manually. KB4019264 went smoothly this way; 3 for 3. Solved

Well, I think the issue may be that the update covers many different versions of NET. When I went to Windows update catalog and entered KB4019112 there were 3 different versions. Interestingly, none were the 77 Mb that Windows Update reported. Clicking on the largest led me to a page with an error, The second largest opened a page with three 3 .exe files with different KB numbers. I had to enter each one in Windows support to determine which I needed. I selected the one appropriate for my system and did a manual install in which all went fine. Windows Update still reported KB4019112 as an important update so I had to hide it.

This was a royal pain in which the descriptions for the different files were vague or non-existent. Here are screenshots of the files I dealt with.

Same thing here after installing 70 updates on a Client's laptop. Fails only on KB4019112. It is buggy and I will wait for next month's. Only addresses NET Framework anyway. The other three installed perfectly on 4 different laptops. Only trouble with one. If I have trouble next time, I will manually install from update store.

Well today I saw there was an optional update available (May, 2017 Preview of Quality Rollup for .NET Framework 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 on Windows 7 and Server 2008 R2 for x64 (KB4019288)) and discovered that this too will not install. Same problem as before; the download stalls at a certain percent. So it seems likely that future .NET Framework updates are all going to have the same problem. Good job, Microsoft. You continue to disappoint your users.

Thank you for this heads up...
I had downloaded the updates but
will not install them straightaway...