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zionsun268
zionsun268
Participant
Jun 11, 2026 9:28 PM UTC
Question

My lightroom is not opening. i get a notification saying "missing file mfc140.dll.

this pops up whenever i try to open my lightroom. i have the latest version of windows and lightroom 

 

    1 reply

    Claire H.
    Community Manager
    Claire H.Community Manager
    Community Manager
    Jun 11, 2026 9:59 PM UTC

    Hi @zionsun268, welcome to the Lightroom Community Forum! Let's try some basic troubleshooting steps:

    1. Reinstall Lightroom: Uninstall Lightroom first https://adobe.ly/4xE1Uum and then reinstall https://adobe.ly/4egmQP1.

    2. Reset your Lightroom preferences: https://adobe.ly/4o7JADQ

    3. Restart your computer.

    If none of these steps work, we can continue to troubleshoot. I hope this helps! ^CH

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