The following warning message : user sessions exceed license: Access denied appears when you try to login with the same user simultaneously on the Free version of NetYCE or when you have a NetYCE license for only one user account. Is this not the case for you ? Then make sure that you have inserted the correct NetYCE license file including the header containing # symbols.
Example license file
# netYCE license file # # Customer name: Genesis # Licensee: NetYCE Genesis # Issue date: 20200415 # Expiry date: 20300131 # Status: Evaluation # Version: 7 # 8F24-25A2-474A-95F2-0A1C 3D10-257C-073B-9548-094B CFF1-BC94-1F49-CE67-0C1B 218E-25F1-B8F1-23CC-0B0E C510-8762-38B2-71EB-0A16 57C0-28D8-89F9-DB34-0A5A C1E5-6943-5F3D-CBFB-0C13 19ED-9EF7-00B1-23A0-0B0B 6CEA-5C24-EC27-B699-0B4C B54F-B1B3-0665-88AE-0B14