Run the installer, and it will automatically place ftd2xx.dll in the correct system folders. 2. Common Errors & How to Fix Them

Click the link under the column (usually a .setup.exe or a version number) to download the installer.

These sites often bundle malware or provide outdated, incompatible versions of files that can crash your system. Always download drivers directly from the official manufacturer. 1. The Official Way to Get ftd2xx.dll

If you are writing code (C++, Python, C#) to talk to an FTDI device: