Windows 10 KB4015217 bugs: Install fails, black screen issues, and more

Madeleine Dean By: Madeleine Dean
3 minute read

Home » Windows 10 KB4015217 bugs: Install fails, black screen issues, and more

Microsoft rolled out cumulative update KB4015217 for the Windows 10 Anniversary Update on Patch Tuesday, bringing a long list of bug fixes and improvements for various areas of the OS.

As expected, KB4015217 also brings issues of its own. In this article, we’re going to list the most common KB4015217 bugs reported by users, as well as their corresponding workarounds, if available.

Frequent KB4015217 issues

KB4015217 won’t install

Many Windows 10 users are still struggling to install KB4015217 on their computers. For some users, the install process gets stuck at a certain percentage (usually at 95%), while for others it stops with an error code.

Hi, I am also having a problem installing Cumulative Update for Windows 10 Version 1607 for x64-based Systems (KB4015217). It failed with an error message which I failed to note and have tried again but it has stuck on 95% again.

I will note the error if it appears this time ! The other updates have installed OK. Not had a problem before but the last update took an age to install.

The good news is that the update install process continues in the background. Many users have confirmed that KB4015217 apparently remains stuck at 95% for around two hours, but eventually installs.

Sound issues

Users reported that KB4015217 also causes various sound issues. If you’re experiencing sound issues after installing this update, use the workarounds listed in our dedicated article on how to fix sound problems on PC to fix them.

Windows 10 is slow

If your OS is slower than usually, you’re not the only one to have experienced such issues. Users report that Windows is much slower after they installed the Patch Tuesday updates: windows fade in and out slowly and menus take several seconds to appear.

Since then my computer is much slower, sound is choppy, even system sounds, window fade in slowly and fade out slowly when closed.
Programs are affected. Sub menus take several seconds to pop/slide out.

I went to advanced system settings and turned off all the visual effects. That helped a lot, but the sound is still choppy, and if I go to Start/Settings, windows still fade in slowly when opened and fade out slowly when closed.

Black screen

Some users have also experienced black screen issues after installing KB4015217. This bug prevented them from actually using their computers for a while. The good news is that the black screen magically disappears in less than one hour.

I got it installed, and now I have nothing but black screens. It goes to the the welcome screen and shows my picture and a pretty picture in the background and then it goes to a black screen I have a cursor and it responds to krys from the keyboard at least control alt delete but I can do nothing except shut down, the computer is completely ruined.

These four bugs are the most frequent KB4015217 problems reported by users. If you’ve come across other issues, use the comment section below to tell us more about your experience.

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