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Exitus
Exitus
Participating Frequently
December 2, 2015
Answered

The com.adobe.preview.loader extension could not be loaded because it was not properly signed.

  • December 2, 2015
  • 7 replies
  • 21742 views

After updating Photoshop, I'm getting this error:

"The com.adobe.preview.loader extension could not be loaded because it was not properly signed."

How can I reinstall preview loader extension to fix it?

Thanks.

    This topic has been closed for replies.
    Correct answer David Alcala - Adobe

    To help us understand what's causing this problem, can each person that is experiencing the problem please answer the following questions?:

    1. Did you get any errors in the Creative Cloud Application when you first tried installing the Photoshop CC 2015 updates?

    2. Did you have any pre-release (beta) versions of Photoshop CC 2015 installed?

    3. What OS are you using?

    To resolve the issue, please try the following:

    1. Uninstall Photoshop CC 2015 using the uninstaller:
      https://helpx.adobe.com/creative-cloud/help/uninstall-remove-app.html
    2. After the Photoshop uninstall finishes, make sure the following folders have been deleted.  If these folders or any sub-folders are still present, then manually delete them:

      Windows:
      C:\Program Files\Adobe\Adobe Photoshop CC 2015\
      C:\Program Files\Adobe\Adobe Photoshop CC 2015\Required\CEP\extensions\
      C:\Program Files\Common Files\Adobe\Plug-Ins\CC\Generator\

      Mac:
      MacHD/Applications/Adobe Photoshop CC 2015/
      MacHD/Library/Application Support/Adobe/CEP/extensions/
      MacHD/Library/Application Support/Adobe/Plug-ins/CC/Generator/
             
    3. Re-install Photoshop CC 2015 using the Creative Cloud Application.

    Please let us know if this solves the problem.  Thanks.

    7 replies

    F
    fierce_hearted5C1C
    Participant
    February 28, 2020

    I saw the video and I think this could be the solution to your problem.

    https://www.youtube.com/watch?v=zJ9cCtxtvaY

    Premiopolis
    Premiopolis
    Inspiring
    December 2, 2016

    Got the same error.  I'm on Mac OS 10.11.16, Photoshop 2017

    I tried multiple solutions

        - Clearing the presets as suggested above.

        - Preferences > Plug-Ins > Enable Generator (checked)

        - Load Extension Panels (checked)

        - Preferences > Plug-Ins > Alllow Extensions to Connect to the Internet (Checked)

        - Even tested using one of Davide Barranca's pre-built panels from https://github.com/undavide/PS-Panels-Boilerplate

    So far no luck

    Always getting the same results: "extension could not be loaded because it was not properly signed"

    ms467
    ms467
    Participating Frequently
    December 15, 2015

    This worked for me also.

    J
    Jschaberg
    Participant
    December 9, 2015

    This seems to have worked for me.

    Thanks.

    David Alcala - Adobe
    Community Manager
    David Alcala - AdobeCommunity ManagerCorrect answer
    Community Manager
    December 7, 2015

    To help us understand what's causing this problem, can each person that is experiencing the problem please answer the following questions?:

    1. Did you get any errors in the Creative Cloud Application when you first tried installing the Photoshop CC 2015 updates?

    2. Did you have any pre-release (beta) versions of Photoshop CC 2015 installed?

    3. What OS are you using?

    To resolve the issue, please try the following:

    1. Uninstall Photoshop CC 2015 using the uninstaller:
      https://helpx.adobe.com/creative-cloud/help/uninstall-remove-app.html
    2. After the Photoshop uninstall finishes, make sure the following folders have been deleted.  If these folders or any sub-folders are still present, then manually delete them:

      Windows:
      C:\Program Files\Adobe\Adobe Photoshop CC 2015\
      C:\Program Files\Adobe\Adobe Photoshop CC 2015\Required\CEP\extensions\
      C:\Program Files\Common Files\Adobe\Plug-Ins\CC\Generator\

      Mac:
      MacHD/Applications/Adobe Photoshop CC 2015/
      MacHD/Library/Application Support/Adobe/CEP/extensions/
      MacHD/Library/Application Support/Adobe/Plug-ins/CC/Generator/
             
    3. Re-install Photoshop CC 2015 using the Creative Cloud Application.

    Please let us know if this solves the problem.  Thanks.

      Mohit Goyal
      Community Manager
      Mohit GoyalCommunity Manager
      Community Manager
      December 8, 2015

      Hi All,

      Please check the Knowledge base article for the issue:

      com.adobe.preview.loader extension could not be loaded

      Hope that helps.

      Regards,

      ~Mohit

      C
      coreygeorge
      Participant
      December 6, 2015

      Even without renaming the extensions folder, the Export As... function doesn't work for me. I had to reinstall PS CC2015.1.

      Mohit Goyal
      Community Manager
      Mohit GoyalCommunity Manager
      Community Manager
      December 2, 2015

      Hi Exitus,

      Please reset the Photoshop Preferences back to default.

      Steps:

      To re-create the preferences files for Photoshop, start the application while holding down Ctrl+Alt+Shift (Windows) or Command+Option+Shift (Mac OS). Then, click Yes to the message, "Delete the Adobe Photoshop Settings file?"


      Let us know if that helps.


      Regards,

      ~Mohit

        Exitus
        ExitusAuthor
        Participating Frequently
        December 2, 2015

        It didn't help. Still getting the message after opening Photoshop.

        I remember I'd got "error U44M1P7" updating through Creative Cloud so I'd had to download update manually.

        Mohit Goyal
        Community Manager
        Mohit GoyalCommunity Manager
        Community Manager
        December 2, 2015

        Close Photoshop

        Open Creative Cloud Desktop App

        Go to Preferences Sign out

        Now, Open Photoshop

        Sign In to it and see if that helps

        Thanks,

        ~Mohit

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