Windows update error 0x80073701 and .Net Framework broken

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  1. Posts : 11
    Windows 10
       #1

    Windows update error 0x80073701 and .Net Framework broken


    Last August I built a pc and I used the Windows 10 Educational license that my college provided. Everything was fine until a month later when it tried to perform an update. When starting the pc it attempts to update but fails, so it restarts the pc and retries the update. Because it keeps failing, it does this fun boot loop thing between 3 and 6 times before giving up and letting me actually use the computer. This sometimes took up to 30 minutes.

    I can't even remember if I did something to fix it or if it just gave up, but it no longer attempts to update on shutdown. In Settings>Update & Security, I can see that the update is still there, it just says "Updates failed" with error 0x80073701. When I click retry it just fails again with the same error code every time. This however wasn't really a problem for me as the computer was now usable.

    Last week, .NET Framework broke. When I try to open applications that require it, it just gives an error message saying that I have to install .NET Framework. When looking in the menu to "Turn Windows features on or off", .NET Environment was still enabled (I couldn't find .NET Framework so I assumed this was it). I disabled it and rebooted as prompted. Here's the kicker. When I reenabled it and rebooted again it attempts to install it via Windows update, causing the install to fail because Windows update is broken.

    I suppose the problem is similar or the same as in this recent post kb4560960 - 0x80073701


    TLDR:
    Windows update broke - Error 0x80073701
    .NET Framework broke but can't be reinstalled because Windows update is broken.


    Windows details:
    The PC is currently running Windows 10 Education, version 1903, OS build 18362.295.
    In the update settings, it's attempting to install "2020-06 Cumulative Update for Windows 10 Version 1906 for x64-based Systems (KB4560960)".


    Things I've tried:
    .NET Framework .exe installer:
    Does nothing besides giving a message to use "Turn Windows features on or off" instead.

    .NET Framework repair tool:
    The things it tried are "Reregister Windows Installer service" and "Restart Windows Installer service". It attempts this but does not fix it. It did output a .cab file that I'll include.

    Windows Update Troubleshooter:
    An unexpected error has occurred

    I tried to force an update via the Media Cration Tool:
    Bootable USB:
    The installer prompts that an update should be performed directly from the Media Creation Tool and not via a bootable USB.

    Directly from the Media Creation Tool:
    "Sorry, we're having trouble determining if your PC can run Windows 10. Please close the Setup and try again"


    This is as far as my knowledge in Windows troubleshooting goes so I started to look up some fixes for error 0x80073701.

    net stop wuauserv
    net stop cryptSvc
    net stop bits
    net stop msiserver
    ren C:\\Windows\\SoftwareDistribution SoftwareDistribution.old
    ren C:\\Windows\\System32\\catroot2 Catroot2.old
    net start wuauserv
    net start cryptSvc
    net start bits
    net start msiserver

    Result:
    Did not work

    sfc /scannow
    Result:
    Windows Resource Protection did not find any integrity violations.
    Did not work

    Dism /Online /Cleanup-Image
    Result:
    Error: 87
    An error occurred while processing the command.
    Ensure that the command-line arguments are valid. For more information, review the log file. (2020-07-03 17:09:11, Info DISM PID=2380 TID=1776 Scratch dire - Pastebin.com)

    Dism /Online /Cleanup-Image /ScanHealth
    Result:
    The component store is repairable.
    The operation completed successfully.
    Did not work

    SetupDiag.exe
    Result:
    Requires .Net Framework. Nice


    Any help with this would be greatly appreciated.
    Windows update error 0x80073701 and .Net Framework broken Attached Files
      My Computer


  2. Posts : 27,523
    Windows 10 Pro x64 Version 21H1
       #2

    Welcome to TenForums @BMatrix

    Could you try

    dism /online /cleanup-image /restorehealth

    Use DISM to Repair Windows 10 Image


    Do you still have the the boot media you used to install this education version at level V1903
      My Computer


  3. Posts : 11
    Windows 10
    Thread Starter
       #3

    dism /online /cleanup-image /restorehealth
    Output:
    Error: 0x800f081f
    The source files could not be found.
    Use the "Source" option to specify the location of the files that are required to restore the feature.
    2020-07-03 19:14:44, Info DISM PID=14232 TID=10076 Scratch di - Pastebin.com

    I no longer have the original boot usb. It was the default .iso generated by the Media Creation Tool.
    Last edited by BMatrix; 03 Jul 2020 at 12:24. Reason: Accidentally posted before finishing reply
      My Computer


  4. Posts : 27,523
    Windows 10 Pro x64 Version 21H1
       #4

    Okay.

    So I would suggest that you download the 1903 iso (Education Edition) to your desktop.

    Once downloaded right click and mount iso. Navigate iso and on root double click setup.exe.

    This would be a in place repair install following this tutorial.

    Repair Install Windows 10 with an In-place Upgrade


    ISO available here

    Microsoft Windows and Office ISO Download Tool


    We want to use same version so it is a repair. Use the correct language

    While an Inplace repair is non destructive I strongly recommend backing up data before preforming.


    Ken
      My Computer


  5. Posts : 11
    Windows 10
    Thread Starter
       #5

    Thanks! I'll give it a shot after I do a backup then.
      My Computer


  6. Posts : 11
    Windows 10
    Thread Starter
       #6

    Alright, I tried to follow the guide but running the Windows installer gave me the same error as I had before ("Sorry, we're having trouble determining if your PC can run Windows 10. Please close the Setup and try again").

    I also tried the Reset this PC option in the settings but this gave an error, "Could not find the recovery environment"
      My Computer


  7. Posts : 27,523
    Windows 10 Pro x64 Version 21H1
       #7

    So just for my clarity.

    You got iso, mounted it and then double clicked setup.

    I don't think I've ever seen that message before on a repair install.


    Is your copy of Windows activated?
      My Computer


  8. Posts : 11
    Windows 10
    Thread Starter
       #8

    Yes, mounted the iso, and started setup.exe. I also tried burning the iso to a usb and running it from there but I gave the same result.

    Windows is activated yes.
      My Computer


  9. Posts : 1,867
    Windows 10 Pro 2004 20H1
       #9

    What version of the ISO?
      My Computer


  10. Posts : 11
    Windows 10
    Thread Starter
       #10

    Using the download tool, I got "Win10_Edu_1903_V1_English_x64.iso"
      My Computer


 

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