I recently deleted Minecraft and reinstalled it, and when I got it back on my PC it continued to give me this error. It also does the same on 1.7.10. I haven't tried on any other versions though.

Name: patchy-1.1.jar
URL: https://libraries.minecraft.net/com/mojang/patchy/1.1/patchy-1.1.jar
Error details: UNKNOWN/-118
Filename on disk: patchy-1.1.jar
Path: C:/Users\Kyle\AppData\Roaming\.minecraft\libraries\com/mojang/patchy/1.1/patchy-1.1.jar
Exists: false