KB4551762 update fails repeatedly, gives Error 0x800f0986

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  1. EdTittel's Avatar
    Posts : 4,092
    Windows 10
       #11

    @Alexander09138: good to know that an in-place repair install will fix the problem. Thanks for sharing your solution. I'd since learned that the error code is legit, despite the lookup tool's failure. Glad you found (and shared) your fix!
    --Ed--
      My Computers

  2. Optimxr's Avatar
    Posts : 18
    Windows 10 Pro
    Thread Starter
       #12

    Windows Update KB4551762 Fails


    Ed & others, I can now confirm that a In-Place Upgrade using the Media Tool fixed the update failure problem. Spoiler alert..
    it takes some time because it starts at the beginning and does all the updates before it completes installation(aprox. 2.5hrs for my pc). I have now completed 3 other 1909 cumulative updates successfully so apparently the problem has been solved.
      My Computer


  3. Posts : 13
    Windows 10 Professional (x64) Version 20H2
       #13

    Optimxr said:
    Hi Ed, assuming the 1st 2 hex digits are not needed(0x...) that is the correct error code. I have attached a snapshot of the error as it happens. And yes, it continues to fail repeatedly after many restarts.
    I am getting the same issue on the same update (KB4551762), but with this error code: Error 0x8024401c

    I have also tried several times, over the last two weeks or so, when prompted by Windows that updates were available...same result.
      My Computer

  4. EdTittel's Avatar
    Posts : 4,092
    Windows 10
       #14

    If you download the files from uupdump.ml, it uses whatever CU you point it at plus the latest Feature Update to build a current image that won't need updates after installation. Might be worth a try next time you have to do this. Takes a bit longer to put the ISO and image files together, but works like a charm.
    HTH,
    --Ed--

    KB4551762 update fails repeatedly, gives Error 0x800f0986-image.png
      My Computers


  5. Posts : 13
    Windows 10 Professional (x64) Version 20H2
       #15

    EdTittel said:
    If you download the files from uupdump.ml, it uses whatever CU you point it at plus the latest Feature Update to build a current image that won't need updates after installation. Might be worth a try next time you have to do this. Takes a bit longer to put the ISO and image files together, but works like a charm.
    HTH,
    --Ed--
    I really appreciate the tips here, but I'll need some definitions and abbreviation interpretations before I think that I can proceed:

    1. How would I access ' uupdump.ml ' ? 2. 'CU' appears to be 'cumulative update,' you say that the selected 'CU will use the latest feature update to build a current image that won't need updates after install...' Aren't some of the Win updates for security purposes as new threats are detected? (I do have AV protection.)

    3. Not sure what 'ISO' is in this context (or, for that matter, how 'image' files play into this). Or how I would put them together properly. 4. I see a CU for Windows Server 2019, but no CU for Windows 10 1909, which is the version I now have.

    I'm obviously not a techie when it comes to PCs and operating systems, but I can usually find my way around a PC, and follow instructions.

    Thanks in advance!
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  6. Berton's Avatar
    Posts : 10,501
    Win10 Pro Versions 2004 and 2009/20H2, Win10 Pro IP_Dev, Win10 Home 1909
       #16

    #1. That's a URL/Uniform Resource Locator/Location, just copy it and paste in the Address box on your browser. Click Enter and you'll get UUP dump
      My Computers

  7. EdTittel's Avatar
    Posts : 4,092
    Windows 10
       #17

    Dear @T R Finlay:
    I repeat your questions, with some answers. Here goes:

    1. How would I access ' uupdump.ml ' ?
    As @Berton said, uupdump.ml is the URL for the website where you want to go (the full, explicit string is
    HTML Code:
    https://uupdump.ml
    ).

    2. 'CU' appears to be 'cumulative update,' you say that the selected 'CU will use the latest feature update to build a current image that won't need updates after install...' Aren't some of the Win updates for security purposes as new threats are detected? (I do have AV protection.)
    CU is indeed cumulative update, and my point was that you can grab a version of 1909 that's up-to-date with whatever happens to be currrent at the moment. As I write this, that's Build 18363.753 for 1909, 18263.753 for 1903, and so on. The CUs work together with AV protection, but AV protection does not mean you don't need to install some CU or another. Depends on what's in the CU. Generally, it's a good idea to stay "caught up" with some exceptions (for example, you don't reallly need 753 unless you use a VPN or proxy server, but it's OK to install it even if you don't use those things).

    3. Not sure what 'ISO' is in this context (or, for that matter, how 'image' files play into this). Or how I would put them together properly.
    ISO is a special file format that packs everything needed for an installable OS image into a single, mega-file format. Here's a useful Lifewire article about ISO files: ISO Files (What They Are & How to Open or Use One).

    4. I see a CU for Windows Server 2019, but no CU for Windows 10 1909, which is the version I now have.
    The link for the Windows 10 1909 version you want appears on the uupdump.ml home page only when you click the button at the top of the page that reads: Browse the list of known builds. If you do that it shows up in position #9, with the link Cumulative Update for Windows Server 2019 (1903) (18362.753) arm64. If you download that material, then run the script that the site provides for you, it will build an installable image that takes Windows 10 to that update level when it finishes installing.

    HTH,
    --Ed--

    PS: Thanks for asking all those questions. They will make it easier for you (and other forum members) to understand what to do with the uupdump.ml website. If you have more questions, please ask them. The answers will be helpful to many people.
      My Computers


  8. Posts : 13
    Windows 10 Professional (x64) Version 20H2
       #18

    EdTittel said:
    Dear @T R Finlay:
    I repeat your questions, with some answers. Here goes:
    1. How would I access ' uupdump.ml ' ?
    EdTittel said:
    As @Berton said, uupdump.ml is the URL for the website where you want to go (the full, explicit string is
    HTML Code:
    https://uupdump.ml
    ).


    2. 'CU' appears to be 'cumulative update,' you say that the selected 'CU will use the latest feature update to build a current image that won't need updates after install...'
    EdTittel said:
    CU is indeed cumulative update, and my point was that you can grab a version of 1909 that's up-to-date with whatever happens to be current at the moment. As I write this, that's Build 18363.753 for 1909, 18263.753 for 1903, and so on. The CUs work together with AV protection, but AV protection does not mean you don't need to install some CU or another.
    Thank you. So, if I install the current proper CU for Win v 1909, what happens going forward with the 'usual' ongoing Windows Updates? Will get prompted to install them? (Right now, as I opened with, the Win Update fails each time - which began after I installed Win 10 v 1909 - which succeeded - as an update I was prompted to install).

    4. I see a CU for Windows Server 2019, but no CU for Windows 10 1909, which is the version I now have.
    EdTittel said:
    The link for the Windows 10 1909 version you want appears on the uupdump.ml home page only when you click the button at the top of the page that reads: [URL="https://uupdump.ml/known.php"]
    Thanks, I see now where to look for my proper version.

    HTH,
    --Ed--
    EdTittel said:
    PS: Thanks for asking all those questions. They will make it easier for you (and other forum members) to understand what to do with the uupdump.ml website. If you have more questions, please ask them. The answers will be helpful to many people.
    Do you have an idea what caused these Win Update failures in the first place? I had these Win Update failures at times with Win 7. I just upgraded to 10 in December, and am disappointed that these update issues continue. Is going the uupdump route my only choice going forward to allow for the install of Win 10 updates? Sure is a pain compared to the manner in which Win Updates have worked in the past (at least when I was using Win 7).
      My Computer

  9. EdTittel's Avatar
    Posts : 4,092
    Windows 10
       #19

    Dear @T R Finlay:
    Sometimes, issues with conflicting, damaged, or corrupt software or related data -- especially in the servicing stack elements for Windows Update -- can cause Windows Update problems. Often these are repairable using a combination of the DISM /online /cleanup-image /restorehealth and sfc /scannow commands. Sometimes, the Windows Update troubleshooter can help. Personally, I have found @Brink's
    Reset Windows Update in Windows 10 Tutorial extremely helpful in restoring WU to normal operations. This is a tough, real-world question ("What caused these Win Update failures in the first place?") so the answer is "A whole collection of possibilities" or "It depends..." If worst comes to worst, when Windows gets really obstreperous, I find an inplace upgrade repair install is often the best first (and sometimes last, if you're lucky) step toward a cure (Tutorial: Repair Install Windows 10 with an In-place Upgrade).
    Keep at it, and you'll get it figured out.
    FYI, some people avoid WU altogether, and only use UUP dump for upgrades and install images.
    HTH,
    --Ed--
      My Computers


  10. Posts : 13
    Windows 10 Professional (x64) Version 20H2
       #20

    EdTittel said:
    Dear @[/COLOR]T R Finlay
    Sometimes, issues with conflicting, damaged, or corrupt software or related data -- especially in the servicing stack elements for Windows Update -- can cause Windows Update problems. Sometimes, the Windows Update troubleshooter can help...FYI, some people avoid WU altogether, and only use UUP dump for upgrades and install images.
    HTH,
    --Ed--
    I bookmarked the links to the solutions you posted, and will try them out. Thank you!
      My Computer


 
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