Please be aware of the minimum system requirements for Dragon Nest.
In addition, you can us the Can You Run it Tool to see if your system can run, Dragon Nest.
NGM Download stops halfway.
An error occurred during installation. Please try again.
This is the result of a corrupted download. Please make sure that the download clients full without any interruptions. The file size should be close to the size noted, and the MD5 matches what's shown below.
File size: 2,474,443
MD5 Checksum: A2402DE7EE249CE4757B11DB54D25991
Client Data Error, please reinstall client. | Nexon Passport Not Valid
Uninstall then reinstall. If it doesn't work, please apply the same steps but use a fresh new download of the latest client available.
For Nexon Passport Not Valid, ensure your nmconew.dll and nmcogame.dll are up to date. This can be resolved with a fresh installation.
Launcher Initialization Failed
There could be various reasons to this.
Solution: Run the game using DNLauncher.exe.
Location: C Drive -> Nexon -> DragonNest -> DNLauncher.exe
Ensure that any applications that may invoke limitations to the Dragon Nest client are disabled.
These could be one out of many things such as:
Windows Firewall, antivirus, network-related applications and hardware settings, administrator priveleges, folder permissions, etc.
Error Code -40:
Here is a website with helpful information about how to solve the Error Code -40 issue