No ANT+ Dongle Found

If you see the message No ANT+ dongle found when you start Zwift, it's most likely due to one of these reasons:

Your ANT+ Dongle is USB 1

If you have an older, unsupported USB 1 ANT+ dongle, it won't show in Zwift. If the dongle is USB 1 but your sensor/trainer also connects over BLE, you can try that instead. Otherwise, the fastest way to get online is to purchase a newer USB 2 dongle.

If you’re not sure if your dongle is USB 1, check the product information for your device. If it's USB 1, it should be indicated on the device or it’s packaging.

Software Conflicts

Garmin and Suunto programs, including Garmin Express, Suunto Movescount, and Garmin ANT Agent, can hijack the USB port so Zwift won't find the USB dongle. We recommend closing or disabling these programs while running Zwift to ensure a smooth experience.

If you try running other software programs, like TrainerRoad, at the same time as Zwift, it's possible they will conflict with Zwift over control of the ANT+ dongle. Make sure these are completely closed.

ANT+ Driver Issues

Updating your ANT+ drivers is generally not necessary unless you have an older machine. If your ANT+ dongle was working before but has stopped, try unplugging it then plugging it back in, and then restarting Zwift. You may also want to try plugging it into a different USB port.

If that doesn't work, it's also possible the driver was corrupted or changed by your OS or another software program. It's worth reinstalling Zwift to see if a clean version of the driver solves the problem. If you're feeling more tech savvy, you can also just reinstall the ANT+ driver.

ANT+ Dongle/USB Extension is Dead

While this is definitely the least desired outcome, we see it happen more frequently than you'd think.

  • If you use a USB extension cable, try plugging the ANT+ dongle directly into your computer to eliminate the cord as being faulty.
  • If your sensor/trainer also supports Bluetooth (BLE), try connecting over that protocol to see if it works and confirm the issue.

Case Sensitive File System Incompatibility

There's currently a known issue where some ANT+ dongles won't work with Mac computers that have a case-sensitive file system. As this is a rare case and fixing it would require significant time on our part, we don't have a timeline on when it will be resolved.

-The Team at Zwift

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