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Unable to connect to CIFS shares after enabling AES on the DC

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Category:
ontap-9
Specialty:
nas
Last Updated:

Applies to

  • ONTAP 9
  • CIFS/SMB
  • AES encryption

Issue

  • Access to shares using the share name no longer works:
  • Using the IP address to access the share works
  • No visible CIFS errors in EMS
  • SECD trace-all :
    info : Error accepting security context for Vserver identifier (4). The ticket isn't for us (KRB5KRB_AP_ERR_NOT_US).
    node-01[kern_secd:info:10473] | [000.000.907]info : The ticket isn't for us (KRB5KRB_AP_ERR_NOT_US)
    node-01[kern_secd:info:10473] | [000.001.267]debug: acceptContext return state: 2, output blob length: 126, ntstatus: NT_STATUS_UNSUCCESSFUL(0xc0000001)
  • In packet trace on the node:
    14479  10.1.1.11  10.1.1.53 SMB2      0xcebd000000ea6bba KRB Error: KRB5KRB_AP_ERR_MODIFIED

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