The issue you are currently experiencing may be the result of several different issues. Please refer for the following list for some steps to try and issues to look for:
1. Bloat Ware: In these cases, a semi-malicious program (or group of programs) may be preventing the launch pad from connecting. To fix this, you will need to remove said bloat ware program in order to connect. Some common software to look for is:
• Browser Safeguard
• Browser Infrastructure Helper
• Search Protect
• Browser Defender
2. Resetting Internet Options:
Go to Start > Control Panel > Internet Options > Click the Advanced Tab. On the Advanced Tab Afterward click Reset > Delete Personal Settings > and click Ok. Then go back on the Internet Options and on the advanced tab, scroll down to Security and un-check "Check Server Certificate Revocation" and "Do Not Save Encrypted Pages to Disk" then click on Ok.
3. Windows Proxy Settings: Please review the following article: http://help.soe.com/app/answers/detail/a_id/28400
4. Clearing LP4 Cache Settings: You can clear the LP4 cache by going to the game's folder and finding the launchpad.libs folder. From there, delete the launchpad.cache folder and try accessing the game once again.
5. Anti-Virus / Firewall Software: It is not advisable to fully disable AV/FW software, so please add exceptions to allow the game through their filters.
Answer Title: Firewall Troubleshooting - Exception List for Windows
Answer Link: http://help.soe.com/app/answers/detail/a_id/37058
Answer Title: Firewall Information
Answer Link: http://help.soe.com/app/answers/detail/a_id/7515
6. Client Reinstallation: This is a last ditch effort - as I’m sure you know, reinstalling takes time and can be inconvenient. In some rare cases, however, reinstalling the client will fix a Socket Error.