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ianp1958
Participant
March 5, 2023
Answered

P: Lightroom launch mfc140u.dll missing file on Windows

  • March 5, 2023
  • 17 replies
  • 31603 views

Error message, mfc140u.dll file not found when launching, tried reinstalling with no sucess 

    Correct answer Sameer K

    Welcome to the Lightroom Community. I'll help you figure this out. The mfc140u.dll is part of Microsoft Visual Studio.

     

    Please try these steps & let me know how it goes.

    •  In the Creative Cloud app, press CTRL + ALT + T (Win) to launch Creative Cloud Troubleshooter & select 'Close Creative Cloud and related processes' > click on Go.
    • Go to 'Add or Remove programs' in Windows search & find all the installations of Microsoft Visual C++ Redistributable (all years).

       

    • Uninstall them completely. Even if there is an option to repair them, please uninstall all the existing MSVC++ packages.
    • Download a fresh package of installers for MSVC++ from this link: Microsoft Learn: Latest Support VC Redist.
    • Right-click the downloaded file and select Extract All.
    • Reinstall all packages (32bit & 64bit) & then restart the computer.

    Let me know how it goes from here. Thanks!

    Sameer K

    17 replies

    Rob_Cullen
    Community Expert
    Rob_CullenCommunity Expert
    Community Expert
    May 21, 2026

    Try the ‘correct answer’ given in this forum link-

     

    Regards. My System: Windows-11, Lightroom-Classic 15.3, Photoshop 27.5, ACR 18.3, Lightroom 9.3, Lr-iOS 10.4.0, Bridge 16.0.3 .
    F
    Frank Wm Patout
    Participant
    May 21, 2026

    This same note applies to both Lightroom and Lightroom Classic

    F
    Frank Wm Patout
    Participant
    May 21, 2026

    I can not open Lightroom Classic. Note" The code execution cannot proceed because mfc140.dll was not found."  

    MAP1737
    MAP1737
    Participant
    April 28, 2026

    Thanks, this worked for me 👍

    PHc
    PHc
    Participant
    April 11, 2026

    J’utilise windows 1, depuis le 28/02/2026 lightroom classic ne s’ouvre plus avec mfc140u.dll missing.

    J’ai corrigé le problème de C++  en le reinstallant. Mais le n’arrive plus à ouvrir lightroom.

    Il n’y a aucun message.

    J’ai voulu reinstaller lightroom classic . Le fichier télechargé ouvre une page internet

    je n’y trouve pas comment installer sur mon PC lightroom classic.

    comment faut il faire ?

    schdlera
    schdlera
    Participant
    April 7, 2026

    It didn’t work for me :(

    anthonyfoote
    anthonyfoote
    Participant
    March 30, 2026

    code mfc140u.dll the code keeps coming up and will not let me open

    schdlera
    schdlera
    Participant
    April 7, 2026

    I’m having the same issue, did you figure it out?

    Sameer K
    Community Manager
    Sameer KCommunity Manager
    Community Manager
    April 21, 2026

    Please follow the correct answer in this post and check if it helps.

    Thanks!
    Sameer K

    Hynciik
    Hynciik
    Participant
    February 23, 2026

    Unfortunately, now there are even more files that are missing :((

    Kony Mendiola
    Kony Mendiola
    Participant
    February 27, 2026

    Hola, tengo el mismo problema, iba hacer lo que señala sameer k pero vi tu comentario y me eche para atras. Nose si ya pudiste con alguna solucion?

    Xhuxha Ambrocio
    Xhuxha Ambrocio
    Participant
    March 17, 2026

    El comentario de GujaratiKanudo, me funcionó. 

    Gabi-Muc
    Gabi-Muc
    Participant
    February 11, 2026

    Beim Aufruf kommt die Meldung: Die Ausführung des Codes kann nicht fortgesetzt werden, da MSVP140_CODECVT_IDS.dll” nicht gefunden wurde. Was ist zu tun? Bis gestern funktioniere alles einwandfrei.

    G
    GujaratiKanudo
    Participant
    May 23, 2025

    Simply Update your VC Runtime files by going here VC_Runtimes and download both x32-x64 Runtime adn apply update..

    (restart if needed) and you are Done.

      Xhuxha Ambrocio
      Xhuxha Ambrocio
      Participant
      March 17, 2026

      Thanks a lot, It works for me. 😃

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