My YubiKey is not working. What should I do?

To make sure the problem is not related to the USB port on the computer, please check the YubiKey on another computer (if possible) or another USB port on the same computer. Please note the behavior of the green LED both when you insert the YubiKey and when you touch the button.

If the problem still persists on another USB port/computer, please send the following details to support@yubico.com about your original order on Yubico Webstore and we will arrange a replacement YubiKey for you:

a. Name:
b. Shipping Address:
c. YubiKey Serial Number (YubiKey 2.2 and later versions have the serial number laser imprinted at the back of the key near the 2D barcode):
d. Yubico Order Number:
OR
e. Order Date and PayPal receipt number:

Posted in: 2. The YubiKey