Microsoft Bungles Again, Bug Doesn’t Let Windows 10 Users Update KB4015438

Microsoft update muddle continues as its latest KB4015438 for Windows 10 fails to install

Microsoft is known for its buggy updates and the if user reports are to be believed, its engineers have not learned anything from the past. Microsoft recently released the new cumulative update ‘KB4015438’ for Windows 10 version 1607 (Anniversary Update). However, as expected, Microsoft’s inept update handling continues with the latest KB4015438 update for Windows 10 like its predecessors.

According to some reports on Microsoft Community forum, the KB4015438 update issued by Microsoft for Windows PCs and laptops fails to install. However, there is no clarity whether the update gets an error or it just takes forever to complete.

To make matters worse, the new patch is also causing problems, which was in fact supposed to address the problems experienced by the previous cumulative update (KB4013429).

One user explains, “Previously, the problem was with KB 4013429, but after some days and Four Hours wasted, finally it is replaced by KB4015438. HOWEVER, the new one begins to fail again!”

As of now, Microsoft has not provided any workaround for this problem. If you are not facing any problems, then in that case KB4015438 is likely to have installed correctly with the process running correctly in the background. However, if your system is freezing during the install, then it is advisable to wait as the process is likely to take more time than expected.

In addition, you can also try downloading cumulative update KB4015438 manually, which is already available through Windows Update. You can run a manual check for the update by going to Start > Settings > Update & Security > Windows Update. All you need to do is point your web browser to Microsoft’s Update Catalog to run a fix.

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Kavita Iyer
Kavita Iyer
An individual, optimist, homemaker, foodie, a die hard cricket fan and most importantly one who believes in Being Human!!!


  1. Wow, who’s having trouble? I have windows 10 on 3 of my systems, one of which is as an insider. (My least important laptop which is just barely good enough to handle windows 10) and I have never had any update issues. I even upgraded my desktop a few weeks ago with a new hard drive and 8 gigs of ram so I now have the 64 bit versions of windows 10. Anyway, if anyone’s reading this I wouldn’t worry about buggy updates. This article is the only instance I personally know of having issues updating. Maybe it’s because I’m an insider but I like to check for updates almost daily and this latest update I installed last night and am running right now. I was just wanting to look at the changes which led me to this article. So if you haven’t had problems before and read this I don’t think you have to worry. Windows 10 has been working great for me. I love it, it’s made all my complaints from Windows 8 (which I hated) go away. 😛

    • With that attitude I’m guessing you’re either a Microsoft PR stooge or a hacker.


      It’s the idiot cry of FAKE NEWS.

    • “This article is the only instance I personally know of having issues updating.”

      Actually, even a cursory Google search reveals a year’s worth of articles about this issue appearing everywhere from _PC World_ to _The New York Times_.

      Microsoft user message boards have also been crammed with questions about this issue for the past year.

      My own experience mirrors this, as the version of Windows 10 that I installed last summer has rejected every Windows 10 update available for the past 7 months,

      In other words, Goldyray Yeazle, you’re either a Microsoft shill, a callous troll, or a nimrod whose poor reading comprehension skills are matched only by your inability to operate a search engine competently. Whatever your motives, your dismissive commentary and ill-informed snark aren’t helpful.

  2. I just built a new system over the weekend and KB4013429 as well as KB4015438 both have failed to install, KB4015438 has failed over 10 times. I thought it was my windows installation since I just built my PC but guess I was wrong.

  3. I just got a message saying updates failed to install, then was presented with a list of two updates: this one (KB3015438) and one for AMD High Definition Audio Device. (I downgraded from AMD Radeon Software to AMD Catalyst Software this morning.)

    My system also locked up this morning with nothing but the mouse cursor working and I had to forcibly shut it down with the power button. I wonder if this update is related.

  4. well I manually initiated the update process. But It has been at 95 percent for 4 hours. This happened today on a brand new HP 17.3 inch laptop. Very frustrated

  5. Well, you wanted to be able to stop updates automatically, here you go. With this one clogging the pipe, that’s one (albeit unorthodox) way to stop Windows Updates. Haha! Now you will have to manually install them to get the process to flow again…

  6. This Update has failed four times on my HP Pavilion G7 laptop. Downloads and goes through the steps but issues a failure message each time.

  7. Microsoft update website unavailable for 3 days, so cannot download and update manually. Update failed to install 4X, no good reason. 3 other computers updated fine.

  8. Two days ago I downloaded the cumulative update KB4015438. It installed correctly and after restarting my laptop (ASUS S400c) it has become unresponsive and the the network adapters are not working correctly.
    After signing in it takes about 4 minutes for the windows start button to respond. regular background apps do not load and there is no internet connection. Tfe wifi adapter doesn’t work (Intel AC7620), the Ethernet port either.
    After a day of trails and errors I found that uninstalling all of the network adapters and connecting my laptop directly to the router with a cable I managed to get internet connection but it loses it after a restart.
    I need help!

  9. Well on my system the Settings are messed up. I cannot get to Personalizations to change the theme. The cursor just sits in the Find A Setting box and won’t move. On something this complex (3 reboots and 50 minutes) I won’t dare try to uninstall it right now…

  10. Good old Microsoft, how could you trust them with an enterprise update. Not the 1st time they have messed up like this

  11. If you are having trouble installing KB4015438 keep trying. I’ve just got the “!?##! thing to download AND install correctly at the 9th attempt. Hours wasted on failed attempts.

    But as well as keeping trying take my advice and start switching your computing to Linux. I am doing, I’m fed up with Microsoft update incompetence. So far I’ve been using Lubuntu, a very easy Linux distro for Windows users to get to grips with, for about 6 months and the experience has been absolutely painless.

  12. KB4015438 failed to install numerous times on 4/10/17. I think MS finally gave up. It never did install.
    This afternoon KB4015217 and KB4018483 successfully installed. Hopefully KB4015438 was included with one of them.

  13. Same thing as user JORGE happened to me. This update failed to install. I wasn’t even aware it tried to install, I never got any messages. I was connected to the internet via cable, two days later I wanted to connect via wifi and it was disabled. After uninstalling, wifi connection vanished completely and never came back after more than 15 attempts of installing the latest drivers for Intel wireless AC7260. I tried to reset all via cmd netcfg -d and now I have no internet connection, no wifi, no ethernet… They are present in Network adapters in device manager, but not in network connections…

  14. Same thing here with the wifi / network adaptors. I was about to pull the wifi card out of this laptop, because I thought it was physically broken

  15. Not only did KB4013429 fail to install last month but KB4018483 won’t install this month. (These are both Adobe Flash Players updates.) Forget about Microsoft “Help” for these issues. And the manual install doesn’t work, either –“not applicable to your computer.” Scannow found no problems. There are no answers for these issues, only hours upon hours of dead-end frustration. “Microsoft Bungles Again/Microsoft update muddle continues” is a very appropriate, if mild, title. The only “good thing” is that it is not affecting my PC’s performance (which was a brand new Windows 10 build in January).

  16. I tried installing the patch manually and received the message that the update was not applicable to my computer. Apparently the problem is that the automatic update is attempting to install an unnecessary patch and is of course, failing. The question for Microsoft, then, is “Why is auto update trying to install an inapplicable patch?”

  17. I find the deeply snarky attitude in this article annoying. Why don’t you take your “optimist” persona you claim to have in the “about you” part of the article, and bundle up your plaid painted Macbook and go write something flowery about that device.

    When you are running the most heavily used OS in the world on a variety of hardware devices, (don’t mention that to other vendors, they don’t have the props to handle basic changes in their hardware without making you buy a dozen dongles for everything) and you have a scenario where you can have more bugs than locked down hardware.

    Yup, I am a Microsoft Fan Boy, and yes I get frustrated when my hardware isn’t working. (My laptop is affected, and it is brand new and a very powerful gaming laptop at that.) But to call the engineers at Microsoft inept is ridiculous. You should take a snapchat of the uber laptop you use and use it as your new avatar, then tomorrow, we will forget you were a writer when your avatar disappears.

    Those stupid engineers at microsoft are hardworking dudes, and deserve a bit more respect than you are showing. As a systems engineer working with enterprise customers in the field, I am often blown away at the complexity and sheer innovation they put out every year. There are so many things they have going right, and I am thinking that you might tip your hat with just a little bit of respect at the fact that they remain one of the most dominant players in the computer/software industry.

    Wouldn’t it be great if we had people that didn’t come across so snotty all the time?

  18. I looked into my update history and found about 20 messages about KB4015438 failing to install, all on May 22. But now I am afraid that it will finally succeed and I will get into a trouble the people are describing. Is there a way to block this update?


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