Fix: KB3172985 Fails to Install

The Windows Update KB3172985 is a Cumulative update for Windows 10 Version 1511 causes problems for many users when it fails to get installed after several attempts. Most of the time when a user lets it get installed, it gets stuck on its way to being 100 percent installed (between 50 to 60 percent) and the user is forced to restart. Only after you reboot multiple times, do you get the chance of booting into your operating system. This issue mainly occurs due to the corruption of update components.

Following the two methods below which should hopefully resolve this issue for you.

Method 1: Reset Windows Update Components

Press Windows key + X to invoke the menu above the start button.

Select File Explorer from the list.

In the file manager window, right click on the C:\ drive and select “Properties”.

On the General tab, click on Disk cleanup.

After a processing pop-up, the disk cleanup window should appear.

Under the Files to delete section, make sure Downloaded program files is checked.

Now click on the “Clean up system files” button present towards the bottom of the window.

Once done, go to the Windows folder on your C:\ drive.

Now go to the folder named “SoftwareDistribution”.

Then double click on the folder “Download.

Delete all the contents of this folder.

Now press Windows key + A to invoke the action center.

Click on Settings from the list.

Now click on Update and security.

Scroll down and click on “Advanced options”.

Now click on the “Choose how updates are delivered”

Disable the option by setting it to “Off” if it’s currently on “On”.

Restart and try installing the update again.

Method 2: Install the Update Manually

If the Method above fails, try installing this update manually by downloading the stand alone package from here

If this method doesn’t help you in installing the update, then try the steps listed here

Kevin Arrows
Kevin is a dynamic and self-motivated information technology professional, with a Thorough knowledge of all facets pertaining to network infrastructure design, implementation and administration. Superior record of delivering simultaneous large-scale mission critical projects on time and under budget.

Expert Tip

Fix: KB3172985 Fails to Install

If the issue is with your Computer or a Laptop you should try using Restoro which can scan the repositories and replace corrupt and missing files. This works in most cases, where the issue is originated due to a system corruption. You can download Restoro by clicking the Download button below.

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