Could you please let me know the version of Lightroom installed on the computer ?
Also which Windows version do you have on the computer ?
Win 10, Lightroom 6 (6.3 i suppose, dont remember exactly)
Please press and hold the Ctrl key and then launch Lightroom.
Once you do that , you should get the option to create a New Catalog.
Try to create a new catalog and see if you are able to do so or not.
Yeah, i was able to creatr the new one, it works ok. But i need my old one, there is some information about my photos
Once Lightroom is opened, then go to File >Open Catalog.
From there select the location of the previous catalog, and see if you are able to open the Catalog or not.
Tryed alredy(( Can't open