Quarantine Zone: The Last Check Demo Fatal Error: 5 Proven Fixes

Quarantine Zone: The Last Check Demo Fatal Error

It is common to experience some technical issues while playing a demo of a new game, not except Quarantine Zone: The Last Check Demo. Some players reported encountering the Quarantine Zone: The Last Check Demo crashing or not launching issue, and some were troubled by the Quarantine Zone: The Last Check Demo fatal error.

Fortunately, this guide is talking about the feasible methods to fix the fatal error crash on PC. You can keep reading to get more details.

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Solution 1. Verify the Game System Requirements

How to fix Quarantine Zone: The Last Check Demo fatal error on PC? First of all, you must ensure your system meets the minimum system requirements of Quarantine Zone: The Last Check Demo.

Minimum Requirements:

• Operating System: Windows 10
• Processor: i5 10400F
• Memory: 8 GB RAM
• Graphics: NVidia GeForce GTX 1050 Ti
• DirectX: Version 12

Recommended Requirements:

• Operating System: Windows 11
• Processor: i7 10700F
• Memory: 16 GB RAM
• Graphics: NVidia GeForce RTX 3060
• DirectX: Version 12

Solution 2. Change the Launch Options

In addition, consider modifying the game launch options to fix the fatal error on PC.

Step 1. Open Steam and go to your Library.

Step 2. Right-click Quarantine Zone: The Last Check Demo and select Properties.

Step 3. Go to the General tab and type -dx11 in the Launch Options box.

Step 4. Relaunch the game and check whether the fatal error is resolved.

Step 5. If the issue still exists, type -dx12/-d3d11/-d3d12 one by one until the game works.

Solution 3. Run the Game as Admin & Disable Full Screen

If the game lacks the necessary permission to run, it can trigger some issues, such as the fatal error in Quarantine Zone: The Last Check Demo.

Step 1. Go to your Steam Library, right-click Quarantine Zone: The Last Check Demo, and select Manage>Browse.

Step 2. Right-click the “QZSim” exe file and choose Properties. In the pop-up window, scroll down and tick the boxes of Run this program as an administrator and Disable fullscreen optimizations.

Step 3. Click Apply > OK.

Step 4. Open the “QZSim” folder, navigate to Binaries > Win64, right-click the QZSim-Win64-Shipping exe file, and select Properties. Check the boxes of Run this program as an administrator and Disable fullscreen optimizations.

Step 5. Click Apply > OK.

Solution 4. Update Graphics Driver

An outdated GPU driver can cause the fatal error in Quarantine Zone: The Last Check Demo. Therefore, consider updating your graphics driver by following the instructions:

Step 1. If you are using the NVIDIA or AMD driver, you need to visit the NVIDIA official website or the AMD official page to download and install the latest update.

Step 2. In addition, you can update your driver in Device Manager. Press Win + X to open the Power User menu and select Device Manager.

Step 3. Expand the Display adapters category, right-click your graphics driver, and choose Update driver.

Step 4. In the pop-up window, select Search automatically for drivers. Then, follow the on-screen breakdown to complete the update.

Solution 5. Run DirectX 12 to 11

Some players reported that downloading the DirectX 11 version can fix the problem that Quarantine Zone: The Last Check Demo fatal error crash. If you are using DirectX 12, you can give this method a shot. Visit the official website to download and install it.

Solution 6. Rename the Game Save Files

After trying the above methods, you still face the issue when launching or playing the game. Opt for renaming or deleting the old saved game files.

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Step 1. Press Win + E to open the File Explorer and go to C:\Users\usersname\AppData\Local. Please note that to find the AppData folder, you should enable the show hidden files option in File Explorer. You can find the saved game data and the configuration files in the Saved folder.

Step 2. Right-click the QZSim folder, select Rename, and then type “.old” next to QZSim. Or choose to delete it.

Other Possible Steps You Can Take

There are some other feasible methods to fix the fatal error in Quarantine Zone: The Last Check Demo on PC:

• Update Windows.
• Disable overlay.
• Install Visual C++ Redistributables.
• Verify the game files.
• Allow the game through the firewall/antivirus.
• Update BIOS.
• Increase virtual memory.
• Reinstall the game.

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Bottom Line

Reading here, you must know how to resolve the Quarantine Zone: The Last Check Demo fatal error on PC. Hope the information can be useful for you.