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Scorpioo73
Participant
February 26, 2026
Question

"The code execution cannot continue because mfc140u.dll cannot be found. Try reinstalling the application."

  • February 26, 2026
  • 2 replies
  • 325 views

When i start LRC or LR there is just coming up a message box

"The code execution cannot continue because mfc140u.dll cannot be found. Try reinstalling the application.”

Have tried reinstalling without success,

This message applies only to LRC and LR.

PS works.

 

What to do?

 

BR

Håkan

    2 replies

    Spoiluphotography
    Participant
    February 27, 2026

    This is going to delete everything i was working on!  Is there are way to go in and input the missing file since this happened apparently with adobes update?!

    AxelMatt
    Community Expert
    Community Expert
    February 28, 2026

    This is going to delete everything i was working on!  Is there are way to go in and input the missing file since this happened apparently with adobes update?!

     

    If you follow the steps in ​@Sameer K ‘s answer (marked in green) you don’t loose anything.

    You have only to reinstall Microsoft’s Visual C++ Redistributables. Lightroom remains untouched. To be absolutely sure, you should make a backup of the catalog.

     

    BTW: You should perform regular data backups anyway. 

     

    My System: Intel i7-8700K - 64GB RAM - NVidia Geforce RTX 3060 - Windows 11 Pro 25H2 -- LR-Classic 15 - Photoshop 27 - Nik Collection 8 - PureRAW 6 - Topaz Photo AI
    Spoiluphotography
    Participant
    February 28, 2026

    Thank you so much! I do back up weekly, but the work i had done for a few days I would have cried if it had not worked and I would have needed to uninstall and reinstall.  But thanks to your fantastic advice it is back to working perfectly.  Thanks again!

    dj_paige
    Legend
    February 26, 2026

    The answer is here: 

     

     

     

    PS: No need to put your entire question in the title dialog box when you create your post. Just a few words in the title would be fine (like “LrC doesn’t start, mfc140u.dll error) and then describe your problem in detail in the next window