Put the summary of the bug you're having here
I could not enter any multiplayer servers on 1.7.9 and below
every time I press on a multiplayer server in 1.7.9 versions and below I could click on the server but everytime it says logging in and about ten seconds later it turns blank and a crash reports come in.
Steps to Reproduce:
1. turn on minecraft to 1.7.9
2. click on multiplayer
3. click on a random server
4. and minecraft crashes after it says logging in
Environment
OS: Windows 8.1 (ver 6.3, arch amd64)
Java: 1.8.0_25 (by Oracle Corporation)
Launcher: Minecraft Launcher 1.6.11 (bootstrap 100)
Minecraft: 1.7.9 (updated Mon Apr 14 21:29:23 SGT 2014)
Incomplete without a crash report, but most likely a dupe of MC-38527.
Besides that, your version of Minecraft is no longer supported. This bug tracker is currently only accepting reports found in version 1.8.1 or later.