How to Fix Ftd2xx.dll Not Found or Missing Errors

A troubleshooting guide for ftd2xx.dll errors

Ftd2xx.dll errors arise from the removal or corruption of the ftd2xx DLL file, which is a file that's part of a device driver from Future Technology Devices International.

Errors related to this file are usually associated with a USB driver issue. In some cases, the errors could indicate a registry problem, a virus or malware infection, or even a hardware failure.

This file can cause error messages on any of Microsoft's operating systems, including Windows 11, Windows 10, Windows 8, Windows 7, etc.

Ftd2xx.dll Errors

Ftd2xx DLL error message

There are several ways ftd2xx.dll errors can show up on your computer. Here are some of the more common messages:

  • Ftd2xx.dll Not Found
  • This application failed to start because ftd2xx.dll was not found. Re-installing the application may fix this problem.
  • Cannot find [PATH]\ftd2xx.dll
  • Failed to load ftd2xx.dll
  • The file ftd2xx.dll is missing.
  • Cannot start [APPLICATION]. A required component is missing: ftd2xx.dll. Please install [APPLICATION] again.

These error messages might appear while using or installing certain programs, when Windows starts or shuts down, or maybe even during a Windows installation.

The context of the error is an important piece of information that will be helpful while solving the problem.

How to Fix Ftd2xx.dll Errors

Do not download ftd2xx.dll from a "DLL download" website. Downloading a DLL file is a bad idea. If you need a copy of this file, it's best to obtain it from its original, legitimate source.

Start Windows in Safe Mode to complete any of the following steps if you're unable to access Windows normally because of the error.

  1. Restore ftd2xx.dll from the Recycle Bin. The easiest possible cause of a "missing" DLL file is that you've mistakenly deleted it.

    If this could be your situation, but you've already emptied the Recycle Bin, you might be able to recover it with a free file recovery program.

    Undeleting this file is smart only if you're confident you've deleted the file yourself and that it was working properly before you did that.

  2. Run a virus/malware scan of your entire system. Some ftd2xx.dll errors could be related to a virus or other malware infection on your computer that has damaged the DLL file. It's even possible the error you're seeing is related to a hostile program that's masquerading as the file.

  3. Reinstall the program that uses the ftd2xx.dll file. If the error occurs when you use a particular program, reinstalling that program should replace the file.

    Try your best to complete this step. A reinstallation of the software that provides this file, if possible, is a likely solution to the error.

  4. Update the USB device drivers. That's what the ftd2xx.dll file is used for.

    If updating drivers through that link doesn't work, try downloading them directly from the source or contacting the developer through the FTDI website.

  5. Roll back a driver to a previously installed version if the DLL errors began after updating a particular hardware device's driver.

  6. Use System Restore to undo recent system changes. If you suspect the error was caused by a change made to an important file or configuration, System Restore could solve the problem.

  7. Install any available Windows updates. Many service packs and other patches replace or update some of the hundreds of Microsoft distributed DLL files on your computer. This DLL file could be included in one of those updates.

  8. Test your memory and then test your hard drive. We've left the majority of hardware troubleshooting to the last step, but your computer's memory and hard drive are easy to test and are the most likely components that might cause DLL errors as they fail.

    If the hardware fails any of your tests, replace the memory or replace the hard drive as soon as possible.

  9. Use a free registry cleaner to repair ftd2xx.dll related issues in the registry. A free registry cleaner program may be able to help by removing invalid registry entries that might be causing the DLL error.

    We rarely recommend the use of registry cleaners. They're included as an option here as a "last resort" attempt before the destructive step coming up next.

  10. Perform a clean installation of Windows. This will erase everything from the hard drive and install a fresh copy of Windows. If none of the steps above correct the error, this should be your next course of action.

    All the information on your hard drive will be erased during a clean install. Make sure you've made the best attempt possible to fix the error using a troubleshooting step prior to this one.

  11. Troubleshoot for a hardware problem if any errors persist. After a clean install of Windows, your DLL issue can only be hardware related.

Need More Help?

If you're not interested in fixing this problem yourself, see How Do I Get My Computer Fixed? for a full list of your support options, plus help with everything along the way like figuring out repair costs, getting your files off, choosing a repair service, and a lot more.

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