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Inspiring
October 13, 2025
Answered

Backup corrupted please i need help to fix it.

  • October 13, 2025
  • 3 replies
  • 1026 views

Hi!

 

Since 29/9 i can't backup my system because of a damaged file.

How can i fix it? I've tried the help and import the latest working one and import the missing folders but when i quit it and it asks for backup it fails after a while.

Correct answer ToddeSwe

Hi @ToddeSwe! Thank you for reaching out! Sorry for being late to the conversation. I'm checking in to see if the issue is resolved for you. Have you tried JohanElzenga's suggestion?

 

Let us know how it's going for you.

Thanks! 


Hi! Sorry for not returning here.

The problem is solved, the support made a new clean profile and imported the old .lrccat i think. Tehn it worked to make backup again.

3 replies

Participant
November 16, 2025

I expereinced this today. 

The error is catalog-specific, not programatic. 

The corrupted file is in the .lrcat-data file. 

FIX
Move the .LCAT file to its own, non-cloud folder. Double-click. It will give you an error message about missing previews. Click continue. It will generate all new support files. 
Close LR. Now delete all the files in your original folder, except, optionally, Previews and Smart Previews. Now move all LCAT and the newly generated files into your original LR folder.

Now it should work. 

GoldingD
Legend
October 14, 2025

Inquiry's

:

  1. What drive is your catalog on?
  2. The hard drive that your catalog is on. How large is that drive, and how much free space remains? Looking for at least 20% free, some say 25%
  3. What drive is your backup on?
  4. The hard drive you are backing up to. How large is that drive, and how much free space?
  5. How large (file space) is the catalog?
ToddeSweAuthor
Inspiring
October 14, 2025

My Lightroom is on C:\Program Files\Adobe\Adobe Lightroom Classic that's a SSD 1 TB with 665 free space.

My Lightroom backup catalog?! Is on H: and it's a 1.36 TB with 759 free space available.

 5. what catalog do you mean? The backup catalog is 194 GB

dj_paige
Legend
October 14, 2025

@GoldingD  asked what drive your Catalog is on, and it is not on C:\Program Files\Adobe\Adobe Lightroom Classic. You showed above that it is on H:\Lightroom. If you're backup is also on the H: drive, that could be the problem.


As far as the permissions go, I don't recognize the screen you showed, my permission screen looks much simpler. So I can't comment on that.

dj_paige
Legend
October 13, 2025

Are you talking about Lightroom Classic? What version NUMBER?

 

What is the exact wording of the error message?

ToddeSweAuthor
Inspiring
October 13, 2025

Thanks for the reply. It's Classiv 14.5.1 and it says:

 

Failed to back up directory Lightroom2-2-v13-4.
Check folder permissions and make sure you have enough space on the backup and main directory drives.

 

I do have 760 GB free space where i have my backups. What does main directory drives means?

 

 

dj_paige
Legend
October 13, 2025

Check folder permissions and make sure you have enough space on the backup and main directory drives.

 

Main drive is the drive where your Lightroom Classic catalog is stored. Also, did you check the permissions on these folders?

 

From that error message, the file is not corrupted or damaged.