Download of KB3189866 Cumulative Update stuck on Windows 10

Some users of Windows 10 Anniversary Update v1607 are reporting that when they go on to download and install the just released Cumulative Update KB3189866, the downloading is stuck at 45%, 46%, 48%, 49% or 95%.

KB3189866 Cumulative Update stuck downloading


KB3189866 is a security update that includes several improvements and fixes in the functionality of Windows 10 Version 1607 & also patches several vulnerabilities. And it is therefore that you install it soonest.

If you are facing issues while downloading or installing, you may want to see if these three suggestions help you:

  1. Run the Windows Update Troubleshooter
  2. Clear the contents SoftwareDistribution folder
  3. See Windows Update stuck downloading updates.

Having done this, try and see if you can update your Windows 10 successfully.

If you still cannot download and install KB3189866, you can, using the Microsoft Update Catalog find the direct download links for this KB3189866 Cumulative Update.

I am giving these here for your ready reference:

Download the setup file and run it. Follow the on-screen instructions and restart when asked for. You should be good!

Are you facing this problem? And did this post help you? Do let us know.

Posted by on , in Category Windows with Tags
Anand Khanse is the Admin of, a 10-year Microsoft MVP Awardee in Windows (2006-16) & a Windows Insider MVP. Please read the entire post & the comments first, create a System Restore Point before making any changes to your system & be careful about any 3rd-party offers while installing freeware.