Hello! I'm a new Player. Had this problem too. First question I'm going to ask is are you using Mcafee Antivirus? I am, and it was what was causing my problem. So try the following,
1) Create shortcut to Aries.exe / AriesAlt.exe
2) Select shortcut and click on properties, under target, type in C:\Nexon\Maplestory\Aries.exe GameLaunching *Credit to DarkSta*
3) Turn off Firewall
If it works, please proceed to Firewall settings, Modify the settings for Aries.exe & Maplestory.exe
My firewall had only allowed outgoing connections for maplestory.exe, i suspect that is the issue.
Hope it works.
For some reason now both Aries.exe and AriesAlt.exe does nothing when I run them. No AriesMS icon in taskbar and maplestory doesn't launch.
I was having this same issue and I had tried literally every suggestion on forums, even reset my laptop thinking I had corrupted files somewhere. I was able to fix this issue after resetting my wifi. Turns out my internet connection was not stable, despite the fact that it worked perfectly on other sites. I had to call the company and set up a new username and password for my internet and after I did that, it worked. This happened to me a few days after I got a new modem and router so I'm guessing something happened there. Try calling your internet company and see if you can reset your wifi and set up a new user and p/w. Good luck!
Make sure you have the v179.2 client. There was 2 small patchs from Maple and some people got auto patched to the higher version.
Client : https://mega.nz/#!KZMAQbia!tRQpTNxvI...S6nrBVBx3Mxrfc
179.2 Maplestory.exe : https://mega.nz/#!lsN3zB5J!fmpU2oWqu...-mQCdAX7YlQExM
Place both these in your folder! Make sure there is exceptions for them both in your firewall.