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garyh5947808
Participant
October 11, 2018
Answered

Lightroom catalog cannot be opened because another application already has it opened

  • October 11, 2018
  • 1 reply
  • 1434 views

I have closed all applications and restarted computer many times this happened after uploaded new lightroom cc

Have closed all computers applications and mobile apps nothing seems to change.

This has been going on for a few weeks help please can not see pictures have been working on from reunion also been a subscriber for many years now.

Gary

    This topic has been closed for replies.
    Correct answer AxelMatt

    When Lightroom is running and has a catalog open it creates a lrcat.lock file next to the lrcat file.

    This is to ensure there is no other access to the catalog when  he is in use. When Lightroom is shutdown the lock file is automatically deleted. If Lightroom is not shut down properly this file remains in the folder next to the lrcat file preventing it from opening. When Lightroom is closed go to the folder where the lrcat file resides (normally user name>pictures>lightroom) if there is a file there lrcat.lock delete the file and then try and restart Lightroom .

    Please take a look here: Lightroom catalog cannot be opened

    1 reply

    AxelMatt
    Community Expert
    AxelMattCommunity ExpertCorrect answer
    Community Expert
    October 11, 2018

    When Lightroom is running and has a catalog open it creates a lrcat.lock file next to the lrcat file.

    This is to ensure there is no other access to the catalog when  he is in use. When Lightroom is shutdown the lock file is automatically deleted. If Lightroom is not shut down properly this file remains in the folder next to the lrcat file preventing it from opening. When Lightroom is closed go to the folder where the lrcat file resides (normally user name>pictures>lightroom) if there is a file there lrcat.lock delete the file and then try and restart Lightroom .

    Please take a look here: Lightroom catalog cannot be opened

    My System: Intel i7-8700K - 64GB RAM - NVidia Geforce RTX 3060 - Windows 11 Pro 25H2 -- LR-Classic 15 - Photoshop 27 - Nik Collection 8 - PureRAW 5 - Topaz Photo