Pretty self explanatory. If you haven't been able to connect to a private server, here's your solution. I've provided the 32 bit and 64 bit patchers for WoW.exe so you can log into your server.
Don't credit me for this, it's just a compile. I will keep it updated as needed..
Instructions:
1. Extract the patcher to your WoW directory
2. Drag your WoW.exe or WoW-64.exe on to the patcher
3. Launch wow with the patched .exe and you're good to go.
Credits:
Skyfire
Link to patchers
5.4.8.18414 Filebeam - Beam up that File Scottie!