Windows 10: Security: Definition update KB2267602 preventing Calibre from starting

Discus and support Security: Definition update KB2267602 preventing Calibre from starting in Windows 10 Installation and Upgrade to solve the problem; Hello, I was running Calibre just fine. Then there was an Security Definition update Jan 8 and Jan 9; now it just hangs in the background on the... Discussion in 'Windows 10 Installation and Upgrade' started by MeghanElizondo, Jan 10, 2021.

  1. Security: Definition update KB2267602 preventing Calibre from starting


    Hello,

    I was running Calibre just fine. Then there was an Security Definition update Jan 8 and Jan 9; now it just hangs in the background on the splash screen. I'm not 100% sure if this is the problem but I believe the most recent Definition update is blocking Calibre from starting up completely. How do I get the Calibre application running?


    I have rebooted a couple of times. Calibre launches but it hangs in the background. For a long time it was at 0% activity but then it did go up to 25% activity. However the application never came up.


    In Virus and Threat Protection settings, Controlled Folder Access is off. I also added "calibre.exe" to the Exclude list.



    Here's my laptop setup:


    Device name SurfaceGo1515
    Processor IntelR PentiumR CPU 4415Y @ 1.60GHz 1.61 GHz
    Installed RAM 8.00 GB 7.89 GB usable
    Device ID DECB9BF4-FB61-431A-8D0E-A25EAFB10CFA
    Product ID 00330-80838-66919-AA060
    System type 64-bit operating system, x64-based processor
    Pen and touch Pen and touch support with 10 touch points
    Edition Windows 10 Pro
    Version 20H2
    Installed on ‎5/‎5/‎20
    OS build 19042.685
    Experience Windows Feature Experience Pack 120.2212.551.0

    :)
     
    MeghanElizondo, Jan 10, 2021
    #1
  2. MimiDee Win User

    Definition Update for Windows Defender - KB2267602 (Definition 1.239.1678.0)

    I have tried several times to install the Definition Update for Windows Defender - KB2267602 (Definition 1.239.1678.0) and it will not update. Suggestions? Anyone else having the same issue?
     
    MimiDee, Jan 10, 2021
    #2
  3. Mr Morgan Win User
    Definition Update for Windows Defender - KB2267602 error

    Hello

    When I run Windows Update I receive the following message concerning Windows Defender:


    Security: Definition update KB2267602 preventing Calibre from starting [​IMG]


    And when I try Windows Defender itself, I get the following:


    Security: Definition update KB2267602 preventing Calibre from starting [​IMG]


    The latest definition version installed is 1.245.410.0. Can anyone suggest what might be at fault here?

    Thanks

    .
     
    Mr Morgan, Jan 10, 2021
    #3
  4. Security: Definition update KB2267602 preventing Calibre from starting

    Definition Update for Windows Defender - KB2267602 (Definition 1.213.1796.0) - Error 0x80070643

    Hi Lyn,

    Thank you for posting in Microsoft Community, we appreciate your interest in Windows 10.

    As per the description I understand that you are facing issues with installing the Windows update KB2267602, we will help you with this issue.

    This issue might be due to the anti-virus software or corrupted Windows Update Components.

    I suggest you to try few of the below troubleshooting steps and check if it helps.



    Method 1:

    Step 1: I suggest you to uninstall the anti-virus software installed on your device and check for the updates.

    If the issue still persists,

    Step 2: I suggest you to
    run the Windows Update troubleshooter and check.

    Windows Update Troubleshooter resolves problems that prevents you from updating windows.

    Steps:

    • Press Windows key and type
      Troubleshooting.
    • Click on Troubleshooting and click on
      View all in the left pane.
    • Select Windows Update to run the
      Windows Update Troubleshooter and follow the on-screen instructions.

    If the issue still persists then,

    Method 2: To turn on Windows Firewall and check if you are able to install the update.


    • Click the Start button. In the search box, type
      Windows Firewall, and then, in the list of results, click
      Windows Firewall.

    • In the navigation pane, click Turn Windows Firewall on or off.

    • For each group of settings shown, select Turn on Windows Firewall, and then click
      OK.

    Hope it helps. Try the above and reply to the post with an updated status of this issue, we will be happy to help you accordingly.
     
    Deepika Gowda, Jan 10, 2021
    #4
Thema:

Security: Definition update KB2267602 preventing Calibre from starting

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