• July 17, 2017
    Announcement: New site design for Microsoft Community

    In July, Microsoft will roll out the first of ongoing site improvements aimed to modernize Microsoft Community and help customers get the most out of their community experience.

    • During the roll out period, you may see the old or new site design depending on your location

    • We expect the roll out to finish by 31 July

    Note: Past private message conversations will not move to the new site design. Please save any private messages you would like to keep.

     Learn more about the upcoming site improvements in this thread.

    Thank you for being part of Microsoft Community!


My windows 10 PC failed to complete download of Cumulative update KB3189866.

DougPiper asked on
Caan anyone help me with cumulative update KB3189866? My PC, for some reason, will not complete the download so i can install the update. Thank, you, Doug.
56 people had this question

Abuse history

The answered status icon Answer
RayRoche replied on

Reply In reply to deleted message


You can also download the package from the Microsoft Update catalog and run that as a stand-alone package. 


2 people found this helpful

Abuse history

The answered status icon Answer
Issac Einstein replied on

This seemed to work for me as well, at first.

For those unaware, go bring up the Task Manager (Ctrl-Alt-Del still works for that) click on the Services tab and right-click on wuauserv

from the dropdown choose Restart

Update will go back to the beginning and try again.

This installed/reinstalled everything but

Cumulative Update for Windows 10 Version 1607 for x64-based Systems (KB3189866)

which was where it stalled in the first place and then, again, stalled out at 45%

I have only tried this on one of my three Win 10 machines, all of which are currently stalled in the midst of the latest update process. One of them (the only one without the Win Anniversary Update, BTW) made it through the cumulative update but stalled on a Defender definition update the same day.

You can try this boss......

Here are Steps to Resolve the Issue:

  1. Open Local Services (services.msc)
  2. Browse to Service named “Windows Update”
  3. Go to Properties >> General Tab >> Startup Type
  4. Select Manual from Drop-down list
  5. Now STOP this “WINDOWS UPDATE Service (By clicking on Stop Button)
  6. Now Reboot the PC or System or Laptop
  7. Now Browse to Folder C:\Windows\SoftwareDistribution\” (If OS is installed in “C” Drive)
  8. Now Delete all the files and folders in this SoftwareDistribution Folder
  9. Now Again Restart the PC or System or Laptop and make sure the folder is empty
  10. Again Open Local Services (services.msc)
  11. Browse to Service named Windows Update and Go to Properties >> General Tab
  12. Now START the “WINDOWS UPDATE Service (As previously it was stopped)
  13. Now Go to SETTINGS >> Update & Security >> Click on "Check for Updates" 
  14. Now the download should complete.

This solved my issue....!


1 person found this helpful

Abuse history

Most Helpful Reply
jimk0512 replied on
Two Windows 10 Pro 64 bit computers here at home, both stuck at "Downloading updates 48%", KB3189866.
11 people found this helpful

Abuse history