I have had this problem since before Christmas when MS upgraded Windows again.
I have followed the instructions on the support page for this problem
Solution 1: Install the Microsoft Visual C++ Redistributable 2012
but still get the same result:-
I have tried choosing a backup catalog to see if that would get me going but it does not seem to want to take the old file names and load any of them up.
Anyone any suggestions?
Please uninstall Lightroom, restart the machine and reinstall it from the creative cloud desktop app, also you can share your catalog download link on the private message with us and we can try open it at our end, you can use the Dropbox.