error saving file after using noise reduction in Lightroom classic

[55gerard]

After editing a photo with noise reduction, I get an error trying to save that file.

" The file cannot be saved because of problems with the authorisation"

I gave Lightroom full authorisation over the harddisk and all access to files an directories.

I work with Lightroom 12.5 on a OS Sonoma system.

What ccould be the problem?

[JohanElzenga]

This could still be a permissions problem. Full Disk Access does not mean that Lightroom can write to a folder that only has read and not write permissions.

[55gerard]

Thanks a lot. You were right. Lightroom tried to write to an external harddisk without permissions instead of the built-in harddisk. Problem solved.