FTD2XX.dll is a Dynamic Link Library (DLL) file that is associated with FTDI USB drivers. This file is used to communicate with FTDI devices on your computer. However, sometimes users may encounter an error message that says “FTD2XX.dll not found” or “FTD2XX.dll is missing.” This error can occur due to a variety of reasons such as a corrupted file or an outdated driver. In this article, we will discuss how to fix FTD2XX.dll not found or missing errors.

Method 1: Reinstall the FTDI Drivers

The first method to fix FTD2XX.dll not found or missing errors is to reinstall the FTDI drivers. Here are the steps:
1. 1. Press the Windows key + X on your keyboard and select Device Manager from the menu.
2. 2. Locate the FTDI device that is causing the error.
3. 3. Right-click on the device and select Uninstall.
4. 4. Download the latest FTDI drivers from the FTDI website.
5. 5. Install the drivers on your computer and restart your system.

Method 2: Copy the FTD2XX.dll File to the System32 Folder

The second method to fix FTD2XX.dll not found or missing errors is to manually copy the FTD2XX.dll file to the System32 folder. Here are the steps:
1. 1. Go to the FTDI website and download the FTD2XX.dll file.
2. 2. Copy the FTD2XX.dll file to the C:\Windows\System32 folder.
3. 3. Restart your computer.

Method 3: Run a System File Checker Scan

The third method to fix FTD2XX.dll not found or missing errors is to run a System File Checker scan. Here are the steps:
1. 1. Press the Windows key + X on your keyboard and select Command Prompt (Admin) from the menu.
2. 2. Type in “sfc /scannow” and press Enter.
3. 3. Wait for the scan to complete.
4. 4. Restart your computer.

Method 4: Perform a Clean Boot

The fourth method to fix FTD2XX.dll not found or missing errors is to perform a clean boot. Here are the steps:
1. 1. Press the Windows key + R on your keyboard to open the Run dialog box.
2. 2. Type in “msconfig” and press Enter.
3. 3. In the System Configuration window, click on the Services tab.
4. 4. Check the box that says “Hide all Microsoft services.”
5. 5. Click on Disable all.
6. 6. Click on the Startup tab and click on Open Task Manager.
7. 7. Disable all the startup programs.
8. 8. Close the Task Manager and click on OK in the System Configuration window.
9. 9. Restart your computer.

Conclusion

FTD2XX.dll not found or missing errors can be frustrating and prevent you from using FTDI devices on your computer. The methods outlined in this article will help you fix the error and get back to using your device. Remember to always download the latest drivers from the FTDI website and perform regular system maintenance to prevent errors from occurring.