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How to Fix Launcher Fatal Error in Duet Night Abyss

Lim How Wei
October 31, 2025

Duet Night Abyss is a fantasy adventure RPG on dual protagonists who are destined to meet.

It has free-form action combat, which features “Multiple Weapon Loadouts x 3D Combat”.

Freely farm for character and forge materials, eliminating forced progression and rigid templates.

Encounter diverse “Demons” and uncover the ultimate truth behind your intertwining fates.

In this guide, you’ll learn how to fix the fatal error in Duet Night Abyss on PC (launcher crashing or not starting).

How to Fix Launcher Fatal Error in Duet Night Abyss

Method 1: Connect to a VPN

  1. Install a PC/mobile app like ProtonVPN.
  2. Connect to a free VPN (e.g., Canada).
  3. Try launching Duet Night Abyss again.

Method 2: Turn off your Wi-Fi

  1. Select the internet icon on the Windows Taskbar.
  2. Turn off your Wi-Fi.
  3. Open the Duet Night Abyss launcher.
  4. Turn on your Wi-Fi and launch the game.

Further reading

How to Fix Skate Stuck on Loading Screen

How to Turn Off the Talking Voice in Battlefield 6 (Menu Narrations)

How to Fix Multiplayer is Not Installed in Battlefield 6

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Lim How Wei

Lim How Wei is the founder of followchain.org, with 10+ years of experience in Social Media Marketing and 5+ years of experience as an active investor in stocks and cryptocurrencies. He has researched, tested, and written thousands of articles ranging from social media platforms to messaging apps.

Lim has been quoted and referenced by major publications and media companies like WikiHow, Fast Company, HuffPost, Vice, New York Post, The Conversation, and many others. One of his articles about the gig economy was quoted by Joe Rogan, who hosts The Joe Rogan Experience (the most popular podcast in the world), in the This Past Weekend podcast (the third most popular podcast in the world as of 2026) by Theo Von.

In his free time, Lim uploads personal finance videos on his YouTube channel, Lim Finance, to guide others on their financial journey. He also creates gaming guides, walkthroughs, solutions, and tips for the games he plays, helping players with their progression.