Windows often fails to automatically assign the correct driver to the CEM DT-172, leading to a "Device Not Found" or "COM Port Error" inside the software. The DT-172 relies on a USB-to-Serial chip (frequently a Silicon Labs CP210x or a Prolific chip). Manual Driver Update Process:
If you have followed all the steps and still cannot connect, try these more advanced solutions.
The CEM DT-172 is a reliable, budget-friendly data logger for tracking temperature and humidity. However, getting its software to run correctly on modern Windows operating systems can be incredibly frustrating. Users frequently encounter broken download links, driver signature errors, or a software interface that refuses to recognize the USB connection. cem dt172 data logger software download fix
Go to the official CEM Instruments website (or your specific regional distributor like CEM Instruments India or Europe). Navigate to the or Downloads section.
Here is a step-by-step guide to downloading the CEM DT172 data logger software: Windows often fails to automatically assign the correct
Look for a yellow warning triangle. It will usually appear under or Other Devices as CP2102 USB to UART Bridge Controller . Right-click the device and select Update driver . Choose Browse my computer for drivers .
The DT-172 is detected as a . Fix steps: The CEM DT-172 is a reliable, budget-friendly data
| Problem | Typical Cause | |---------|----------------| | Software won’t install | Missing runtime libraries (MSVC, .NET) or antivirus blocking | | Device not detected | Driver not installed or Windows updated replacing drivers | | “No device found” | Wrong COM port or USB cable defective | | Software crashes on graph | Corrupted configuration file or old Windows version | | Download hangs at 0% | Incomplete driver installation or USB power management |
Windows 10 and 11 block unsigned drivers by default. The DT‑172 driver is almost certainly unsigned. To bypass this:
(as of 2026):