Launcher version: 4.455 (STABLE)
Operating system: Windows 10, 64-bit
Java version: (1.8.0_201 64-bit)
Antivirus Program: N/A
Description of problem: My launcher is offline. I can't update or download new packs. When I try it acts as if it will install, but then cancels before anything happens. This is the third day I've been offline. I can play my packs normally, I just can't go servers since I'm, well, offline. I saw some threads saying clearing the cache on your browser would fix it. I've done this on every browser on my laptop and it hasn't worked.