Lightroom classic back-up failure

[chappo1]

I have been getting this error for a few weeks:

I have checked disc space and have over 2 Tb free.

I have had computer technician give me total access to the drive where catalog has save successfully prior to issue.

I have tried to change drives for the back-up

I have purged cache etc

I have updated to latest release of Windows 11

My LR is up to date.

I have looked through posts here and found one issue which is similar to mine but could not understnd the link to fix.

Obviously something has changed but I have run out of ideas for what to do.

Any ideas please

john

[GoldingD]

see:

• Lightroom was unable to back up the catalog named "Lightroom Catalog-v12" | LrC Community

[chappo1]

GoldingD you are indeed a legend and thank you.

I created a nw catalogue and imported the previous catalogue.  It took over 6 hours but now when I back-up it did not error.

Again

Thank you for your time

john