Microsoft’s Third Cumulative Update for Windows 10 (KB3081438)

Microsoft has released another cumulative update for Windows 10 users, (KB3081438), which makes it the third in two weeks, and it’s live now.

Windows 8 LogoMicrosoft has released another cumulative update for Windows 10 users, which makes it the third in two weeks. The most recent update, KB3081438, comes on the heels of another cumulative update released earlier this week –KB3081436.

There isn’t a whole lot of information of what this update addresses. In typical Microsoft fashion, the update says “This update includes improvements to enhance the functionality of Windows 10.”

There is a Microsoft Support page up, although it doesn’t spell out what exactly this update is addressing. Hopefully we’ll get more information on it in the coming days.

This updated does require a system restart, and remember you can schedule when restart takes place.

Since Microsoft has moved to the Windows 10 as a service model, I would expect we’ll see several of these cumulative updates on a regular basis.

It will be pushed to Windows 10 Home and Pro users automatically, but you can jump on it right away by going to Settings > Update & Security > Windows Update.


We downloaded the update and haven’t seen any problem. I have seen some discussion around the web that it fixed an issue for some people that were having with the Store — not able to download apps. Other reports are that the store is still broken for them. Personally I haven’t had any issues with the Store not working on any my PCs with Windows 10 installed, but would love to hear from you.

Let us know how the update goes for you and let us know how your experience is after updating in the comments below. Or continue the conversation in the Windows 10 Forums.

Direct Download Links:

Windows 10 KB3081438 Direct Download – 32bit Installer

Windows 10 KB3081438 Direct Download – 64bit Installer



  1. Jack

    August 15, 2015 at 2:33 pm

    Cumulative update KB3081438 downloads with no problem but on reboot gives error message:
    “Couldn’t complete the update.

    Undoing changes”

    Then reboots. It will do this 3 times then reboots into windows again. No other problems.

    • Pete

      August 16, 2015 at 11:04 am

      Check you History of updates….I did Cumulative(436) with multiple restarts and Cumulative (438) even more restarts 6, both failed to install.

  2. EGR

    August 15, 2015 at 7:25 pm

    Have had problems since 2nd update. Edge browser will not open, my HULU won’t play and my library overdrive won’t stream. Did 3rd update yesterday and it did download and restart. My pinned items open but the Edge browser does not and my movies still will not stream to me. All worked fine before 2nd update. Anyone else having these problems?

    • Pete

      August 16, 2015 at 11:06 am

      I had to buy new video card to get Hulu and Netflix to stream well, $40 bucks, worth it.

  3. Ziggy

    August 15, 2015 at 7:36 pm

    All good on install, but I haven’t really experienced any issues. Some blogs suggest that it fixes issues with “Store’ updates and downloads. At my end nothing noticed in terms of improvement to the system.

    The link below gives direct links to the Offline Installers for this patch, 32 and 64 bit.

    Be sure to check these with your a/v – mine came up clean.

  4. Martin

    August 16, 2015 at 6:11 am

    Haven’t tried this update yet, but I’m hoping its gonna fix my black screen startup problem.

  5. Learjet

    August 16, 2015 at 7:03 am

    I received it last night, but it hasn’t affected my computer one way or another. Still loving Windows 10 and happy that they’re staying on top of things.

  6. Mike

    August 16, 2015 at 8:30 am

    I can’t download the update. Its been stuck at 2% for a couple hours.

  7. Old Guy 60

    August 16, 2015 at 8:45 am

    One thing I found is that there were two files that had new dates on them. Appxdeploymentextensions.dll and Appxdeploymentserver.dll. Both of which had 8/03/15 date stamps in 3081436 which was released on the 11th. Now they show 8/12/15 in 3081438.

  8. Jamies

    August 16, 2015 at 2:25 pm

    It installed on my boot today – unexpectedly annoying long delay at startup with blank screen …
    Oh – yes the system is actually working OK – it’s just doing the blank screen of failed-PC’ness while it does the first part of the install.

    One thing I have noticed is that the disk in use light does not appear to have come on so much while the PC is not doing anything I set it to do.
    Maybe this partially? sorted the lots-of-drive-usage while the system should be idle situation.

    No – back to trying to figure out what needs doing to get 10 working as understandably and appropriately as 7 did
    Maybe figure out how to see enough f the All Apps names to figure out which ‘app’ is the bit of the installed package set I want to run?
    or see installed updates in date order, not in application order,
    or maybe (I have 64 bit Pro) stop updates installing but get notified of their existence – so I know to check what they do and maybe install them ASAP.

    • Mark McCormick

      August 25, 2015 at 3:41 am

      this is because you may have two graphics cards and windows has defaulted to using the on-board card.
      go into bios and disable the main board (Built in) graphics card.

      that should solve the issue well at least till Microsoft do another update.

  9. Martin

    August 17, 2015 at 3:46 am

    i still don’t have it to download or install and it’s not in the installed updates

  10. George

    August 17, 2015 at 6:00 am

    Thank you to you testers.
    Think I will wait for a while.

    Put 10 in two computers. My 8.1 laptop, my wifes 7 desktop.
    She did,nt speak to me for 3 days. Put her back to 7.
    She released my laptop from her safe, so I am able to use it again.
    No problems.

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