Lightroom Classic won't start

[robertpbrisbane]

When I try to open the program I get the blue circle for a couple of seconds then nothing happens. I have logged out and back in with no success, reloaded the program again no success. It was working fine last week and now nothing. I am using windows 10 with the latest update for Lightroom.

[GoldingD]

Have you checked for a lock file?

[robertpbrisbane]

Not that I can see (with my limited knowledge)

[robertpbrisbane]

I have just found 2 locked files which I have removed with no success, but now there are 2 files disappearing and reappearing (flashing). 1 with "shm" at the end of the name and the other with "wal"

[GoldingD]

https://helpx.adobe.com/lightroom-classic/kb/lightroom-error-catalog-cannot-be-opened-lrcat-lock.htm...

[johnrellis]

"there are 2 files disappearing and reappearing (flashing). 1 with "shm" at the end of the name and the other with "wal""

Those are a normal part of LR's operation and will get created when LR starts and deleted when LR exits.

[GoldingD]

shm and wal files created at catalog start, used by the SQL database that is the catalog,  can be ignored. If deleted, they will just get recreated. 

[robertpbrisbane]

I have removed all locked files and still Lightroom won't open. Here is a screen shot of the folder with the catalogue, not sure why there are so many. Maybe this is the issue?

[johnrellis]

Those .lrcat-wal and .lrcat-shm files are a symptom, not a cause. LR is starting, then initializing the database (which creates those files), then terminating abnormally (preventing those files from getting deleted as they normally would).

[GoldingD]

And to double check, when in the file manager you just posted a screenshot of, you double click on the latest catalog, nothing happens?

P.S. I notice you have a backup folder in that drive. Is this where you are keeping your backups of your catalogs? On the same hard drive as the catalogs> Bad form, if this hard drive goes Kaput, so does the backups. Backups should be on other hard drives, preferably multiple hard drives, including external.

[robertpbrisbane]

Still nothing when I click on the latest catalogue, I do have and update backup catalogue on external hard drives. I just clicked on the latest backup and boom!!! it worked. Shouls I delete the original catalouge and move the backup into the main file?

[Rob_Cullen]

Don't delete the original catalog just yet. Move it to another location.

But yes, COPY the 'backup' catalog from the backup location to the {Lightroom} folder and [double-click] on this .lrcat file to 'Open' it.

[Rob_Cullen]

Post a screen-clip or the report from  the MENU: HELP > SYSTEM INFO....

On my Windows Laptop with 8GB of RAM, a large Catalog is quite slow to open. If I so much as click the mouse before all data in LrC is visible and 'loaded' (thumbnail info, badges, folders, image histogram, etc) my LrC goes into a "Not Responding" mode for a long period of time (1-2 minutes).  Do you allow the Catalog to fully load?

A Queenslander? 🙂

[Rob_Cullen]

Worth a try!_ I might suggest that you stop the sync with OneDrive for all files in the Lightroom Catalog Folder. LrC does not 'like' files syncing (to OneDrive) while it is accessing same, especially the Catalog.

Every tiny change to the Catalog is attempting to sync as changes happen.