Login to OCP 3 fails with error "cannot be claimed by identity because it is already mapped" when using LDAP AD

Solution Verified - Updated -

Issue

  • When logging through LDAP AD it fails and the master API logs show:
Error authenticating "user@email.com" with provider "IDENTITY_AD": user "user@email.com" cannot be claimed by identity "IDENTITY_AD:John Doe" because it is already mapped to [IDENTITY_AD:John Doe Last]

Environment

  • Red Hat OpenShift Container Platform 3.11

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