i cant open my minecraft HELP ME

this is what appears when i try to open my minecraft (by the original launcher)
The file could not be downloaded.
Name: patchy-1.1.jar
URL: https://libraries.minecraft.net/com/mojang/patchy/1.1/patchy-1.1.jar
Error details: Failed to connect to libraries.minecraft.net port 443: Timed out
File name on disk: patchy-1.1.jar
Path: C: \ Users \ user \ AppData \ Roaming \ .minecraft \ libraries \ com \ mojang \ patchy \ 1.1 \ patchy-1.1.jar
There is: Nonexistent

what do I do?