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How to Fix Failed to Load Custom.dll from the List Error Code 126 in Schedule 1

In Schedule 1, you’re a small-time drug dealer new to town with no cash, product, or connections.

Build your drug empire from scratch and contend against law enforcement and cartels.

Produce a range of drugs and discover special recipes to create new variants with unique properties.

Walk, skate, or drive throughout Hyland Point, hire dealers, purchase new properties, and more.

In this guide, you’ll learn how to fix the “Failed to load custom.dll from the list. Error Code: 126” error in Schedule 1.

How to Fix Failed to Load Custom.dll from the List Error Code 126 in Schedule 1

Fix 1: Unblock Custom.dll from your protection history

  1. Search for “Windows Security” using Windows Search and press Enter.
  2. Select “Protection history” on the left sidebar.
  3. Find the “Custom.dll” threat by selecting each item.
  4. Select the dropdown arrow and select “Actions”.
  5. Select “Allow on device”.

Fix 2: Exclude Schedule 1 from Windows Security

  1. Search for “Windows Security” using Windows Search and press Enter.
  2. Select “Virus & threat protection” from the left sidebar.
  3. Select “Manage settings” under “Virus & threat protection settings”.
  4. Scroll down and select “Add or remove extensions”.
  5. Select “Add an exclusion” and add the Schedule 1 game folder (unzipped).

Fix 3: Turn off real-time protection

  1. Search for “Windows Security” using Windows Search and press Enter.
  2. Select “Virus & threat protection” from the left sidebar.
  3. “Manage settings” under “Virus & threat protection settings”.
  4. Turn off “Real-time protection”.

Further reading

How to Set the Pot/Grow Tent Destination in Schedule 1

How to “Use the management clipboard to assign the Botanist to a bed” in Schedule 1

List of Queen Trainer Cheats and Console Commands

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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.