We have the same issue. A WLC9800-L (v17.9.5) doesnt authenticate iphone client, we got these logs in WLC:Jul 9 18:31:10.101: %SESSION_MGR-5-FAIL: Chassis 1 R0/0: wncd: Authorization failed or unapplied for client (aaaa.bbbb.cccc) on Interface capwap...