The solution of "Your program lacks an easy language support library named: operating system interface function support library 1.0" recently helped a friend to maintain the computer, cleaned it with windows cleaning assistant, and found some Trojans. After cleaning, I restarted it. The prompt is as follows: Your program lacks an easy language support library named: Operating System Interface Function Support Library 1.0. The text is named shlle.fnr or shell.fne, and the digital signature is 52f260023059454187af826a3c07af2a. This file can be repaired by reinstalling your program, or you can download the latest version of Yi language directly from the website and copy it to your program directory. After analysis, the real reason is not the lack of files such as shell. Fnr, but the remains of a Trojan horse. The solutions are as follows: Method 1: Clear the startup options with tools and software, clear some unnecessary startup items and restart; Method 2: Press F3. Search the shell. * in drive c, check the advanced option. Check search system, hide and subfolder. Then search. Keep three necessary systems in the result, C: \ Windows \ INF \ shell.infc: \ Windows \ System \ shell.dll C: \ Windows \ System32.