This account is not active yet
Password login returns AUTH_ACCOUNT_INACTIVE when status is not active and not pending. OAuth uses the same line for inactive linked/email-matched accounts (oauthAccountInactive).
Why this happens
Admin disabled/suspended the account, or status never reached active. Distinct from pending verify messages that tell the member to check email.
Diagnose and fix
1. Admin: activate the user under Manage users if they should sign in.
2. Member: contact support if unsure why the account is inactive.
3. If they never verified email, look for the longer “check your email” siblings instead.
4. See also Account exists but is not active yet for the broader catalog sibling.