Is Microsoft throttling bandwidth for users running Windows Update on Vista machines to give a higher priority to Win 10 users?
I've run multiple Windows Updates since Patch Tuesday on 11-Aug-2015 and couldn't get them to run to completion on my 32-bit Vista machine until 16-Aug-2015. There were no errors - it just reported that it was checking for updates and never finished, even if I let it run for over an hour. Process Explorer showed svchost.exe
constantly consuming ~50% of my CPU (i.e., complete saturation of one of my Intel Duo cores) and that a thread for the Windows Update service (wuauserv) was responsible for all that CPU activity.
Is anyone from Microsoft looking into this issue where the initial Checking for updates... phase hangs for long periods of time during monthly Patch Tuesday updates for some Vista users?
Mooly01 provided a link to a post <here> by Windows Sysinternals forum administrator MagicAndre1981
stating that that Microsoft released a patch (KB3050265) for the Win 7 Update Client to fix a similar problem on some Win 7 machines. This
Windows Update Client for Windows 7: June 2015 at https://support.microsoft.com/en-us/kb/3050265 reads in part:
"This update addresses an issue in which system performance can be decreased during scans. This issue has the greatest effect on computers that havea small amount of physical memory."
I've posted additional screenshots in ScousaJay's thread *windows update just seems to hang while checking* in the VistaForums which show that
Checking for updates.... can run for more than an hour on my system during Patch Tuesday updates when Microsoft releases a large batch of updates. Note that I have no problem running Windows Updates outside of Patch Tuesdays when zero or a small number
of updates are found. That VistaForums thread has over 15,000 views and several Vista users reporting the same issue so this is clearly not an isolated problem.
Here's the CPU consumption for my Feb 2016 Patch Tuesday updates that I ran on Wednesday, Feb 10th.
Checking for updates... was stuck for 80 min before reporting that 13 important updates were available for download. The entire Windows Update session required 110 min to run from start to finish (the re-boot is displayed
as a dark grey band at the far right of the image):

I'd like to know if Microsoft is planning to release a patch for the Windows Update Client for Vista that would address this problem, as they already did for Win 7 computers with limited amounts of RAM.
32-bit Vista Home Premium SP2 * Firefox 44.0.2 * IE9 * NIS 2014 v. 21.7.0.11
HP Pavilion dv6835ca, Intel Core2Duo T5550 @ 1.83 GHz, 3 GB RAM, NVIDIA GeForce 8400M GS