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P: Lightroom launch mfc140u.dll missing file on Windows

ianp1958
New Here ,
Mar 04, 2023 Mar 04, 2023

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

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correct answers 2 Correct answers

Sameer K Adobe Employee
Adobe Employee , Mar 06, 2023 Mar 06, 2023

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).

    SameerK_0-1678132051166.png

     

  • Uninstall them completely. Ev
...
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JuanoCO
New Here , May 26, 2025 May 26, 2025

Hello Sameer, 

I just followed your instructions and now I can open lightroom classic on my new computer.

Thanks a lot šŸ™‚

Juan

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mooncakepictures
New Here ,
Jul 18, 2023 Jul 18, 2023

I can't open lightroom on my laptom, reinstalled probably x10 times, could somebody helo please?

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esavarese
New Here ,
Aug 23, 2023 Aug 23, 2023

Thank you... It worked...

 

You just saved my bacon with this info!!!

 

Much appreciated

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GujaratiKanudo
New Here ,
May 23, 2025 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.

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