Failt to download file. (any)

This error occurs with various installation versions, and files. Sometimes it doesn't want to download some 'patchy' file?

 

Why the hell is this even happening? Everything was working JUST fine before. Can confirm in all type of ways that my internet is fine.

 

Failed to download file.
Name: blocklist-1.0.5.jar
URL: https://libraries.minecraft.net/com/mojang/blocklist/1.0.5/blocklist-1.0.5.jar
Error details: Could not resolve host: libraries.minecraft.net
Filename on disk: blocklist-1.0.5.jar
Path: C:\Users\Administrator\AppData\Roaming\.minecraft\libraries\com\mojang\blocklist\1.0.5\blocklist-1.0.5.jar
Exists: Nonexistent