The YubiKey 4 and YubiKey NEO have five separate applications, all of which have different processes for being reset (with the exception of FIDO U2F, which cannot be reset). Each application is listed below, along with the link to the article that covers the steps for resetting it.
Application | Reset Instructions |
OTP | Resetting the OTP application on the YubiKey |
FIDO U2F | This application is not configurable and cannot be reset. |
PIV (Smart Card) | Resetting the Smart Card (PIV) application on the YubiKey |
OATH | Resetting the OATH application on the YubiKey |
OpenPGP | Resetting the OpenPGP application on the YubiKey |