Backup does not work

Dear to All,

for a photographer I had to set up a new computer with Windows 11.

We had installed Lightroom Classic Version 6.14, because all had worked on the old computer.

Unfortunately, we can no longer make a backup.

Please have a look to the screenshots.

Lightroom could not save the catalog.

I have tried an other folder and a folder on a empty harddrive.

Best regards

Peter

[moved from bugs to discussions - Mod.]