When pressing play on this version a small window pops up for "Java Virtual Machine" saying "A Java exception has occurred." Tried to create a new installation, and this came up; 

Failed to download file.
Name: oshi-core-6.2.2.jar
URL: https://libraries.minecraft.net/com/github/oshi/oshi-core/6.2.2/oshi-core-6.2.2.jar
Error details: Could not resolve host: libraries.minecraft.net
Filename on disk: oshi-core-6.2.2.jar
Path: C:\Users\dylan\AppData\Roaming\.minecraft\libraries\com\github\oshi\oshi-core\6.2.2\oshi-core-6.2.2.jar
Exists: Nonexistent