Unable to connect to Battle.net? Are you getting the Error # 114 message? Most likely you have the 64-bit client. Blizzard Customer Service has a workaround to login. Stay tuned for new info on this issue. There might be a small launcher patch update to fix this.
Update: Try using the following workaround.
Open the game launcher ► Click Options ► Game preferences ► Put a check mark on Launch 32-bit client ► Click ok ► Try logging in.
We’re still investigating the issue.
We’re aware that players are receiving a Battle.net error #114 when attempting to login to the game and the issue is under investigation.
We’ll provide additional information as soon as it becomes available to us. Thank! – source