C:\Program Files(x86)\Turbine\The Lord Of The Rings Online Now, you have to delete client_surface.dat and client_surface_aux_1.datx, and start LOTRO. The program will re-download the file for you.

YouTuber ThioJoe actually tried what would happen if he deleted the 'Program Files' folder, which contains important system files, and shared the results. What If You Delete the 'Program ...

When you install a program, all the files required to run it go into the Program Files or Program Files x86 folder, and the data other than these files go into the AppData folder. This data includes: ...

Every data file on your PC should be associated with an application, so that opening the file will open the right program. But the official "right" program isn't always the right one for you.