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    • Go Anywhere client is unable to consistently access CIFS/SMB Share
      https://kb.netapp.com/on-prem/ontap/da/NAS/NAS-KBs/Go_Anywhere_client_is_unable_to_consistently_access_CIFS_SMB_Share
      Applies to ONTAP 9 Go Anywhere application SMB Encryption enabled/required Issue Go Anywhere logs record one the following: Connected share fail, server reconnect fail (-1073741790) : Do echo error JN...Applies to ONTAP 9 Go Anywhere application SMB Encryption enabled/required Issue Go Anywhere logs record one the following: Connected share fail, server reconnect fail (-1073741790) : Do echo error JNQ access failure 0xffffff9b - Connection refused : Connected share fail, server reconnect fail (-1073741790) : Do echo error
    • Heavy SMB signing pressure causes high SMB3 latency from Network CPU domain
      https://kb.netapp.com/on-prem/ontap/Perf/Perf-KBs/Heavy_SMB_signing_pressure_causes_high_SMB3_latency_from_Network_CPU_domain
      In the latency breakdown section, the bulk of the latency is from Network or CPU N-blade, depending on the tools that are used to monitor performance cluster1::> set -c off advanced cluster1::*> stati...In the latency breakdown section, the bulk of the latency is from Network or CPU N-blade, depending on the tools that are used to monitor performance cluster1::> set -c off advanced cluster1::*> statistics start -node node1 -object cifs -counter total_smb3_1_connections_count|total_smb3_connections_count cluster1::*> statistics show -sample-id sample_1 As they have to complete for the same network threads with SMB signing workload
    • ONTAP shows unencrypted CIFS sessions open when '-is-smb-encryption-required' is true
      https://kb.netapp.com/on-prem/ontap/da/NAS/NAS-KBs/ONTAP_shows_unencrypted_CIFS_sessions_open_when_is-smb-encryption-required_is_true
      Applies to ONTAP 9 CIFS / SMB Issue Running the command cifs session show may list unencrypted SMB sessions even if the respective CIFS server is configured to require SMB encryption.
    • SVM fails to connect to DC when SMB3 Encryption is enabled on DC
      https://kb.netapp.com/on-prem/ontap/da/NAS/NAS-KBs/SVM_fails_to_connect_to_Domain_Controller_DC_when_DC_has_EncryptData_option_enabled
      SVM fails to connect to DC when SMB3 encryption is enabled on DC. With SECD tracing enabled SECD logs shows that DC failed the session setup request from SVM with "Access denied"( NT error 0xc0000022)...SVM fails to connect to DC when SMB3 encryption is enabled on DC. With SECD tracing enabled SECD logs shows that DC failed the session setup request from SVM with "Access denied"( NT error 0xc0000022) [kern_secd:info:8039] | [001.567.333] debug: Connected but failed to authenticate with DC win-m2fcklun4l2.naslab.local { in connectToDomainController() at src/connection_manager/secd_connection.cpp:262 }