Kerberos EMS error descriptions

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Category:: ontap-9

Specialty:: core

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Applies to

ONTAP 9x
Clustered Data ONTAP 8

Answer

Kerberos is a authentication protocol and Data ONTAP employs it for authenticating either CIFS or NFS requests, depending on the configuration.
By default, NFS is not installed with a Kerberos authentication setup.
Starting with Clustered Data ONTAP CIFS cannot be used unless the the SVM (Storage Virtual Machine) is joined to Active Directory infrastructure and authentication will be performed via the Kerberos implementation in Active Directory.

Data ONTAP 7mode does not trace Kerberos errors related to NFS by default, this has to be enabled with the nfs.rpcsec.trace option:
ontap> options nfs.rpcsec.trace on
In order to reassess the situation, retry your connection and see if something along the following line is logged in EMS messages:
Wed Apr 25 22:18:11 IST [krb.kt.princ.notfound.kv.less:warning]: Kerberos: Found principal nfs/host.domain.com@KDCDOMAIN in keytab file /etc/UNIX_krb5.keytab, but the key version number was wrong (received 3, expected 2). Try running 'kdestroy' and 'kinit' commands on the client and reinstalling the keytab file from the KDC.
Wed Apr 25 22:18:11 IST [rpc.authen.init.rep.status:warning]: authentication reply sent with major_status 851968 and minor_status -1765328158

In Clustered Data ONTAP the authentication is handled by the SECD daemon and at default values SECD will log in detail every authentication request that is not successful.
In order to see a listing of the SECD errors/messages for the last 10 minutes you can use a CLI command of the form:
::> event log show -time >10m -source secd

The SECD daemon that will perform the authentication is the SECD daemon running on the node that owns the LIF accessed by the client, you could also inspect the log from the SPI interface of the node via HTTP at the URL:
https://cluster-mgmt-ip/spi/node-name/etc/log/secd
the files named secd* at the location are the SECD logs.

Minor Status	Minor Error Code	Description	Corrective Action
KRB5_KT_KVNONOTFOUND	-1765328158L	Key version number for the principal in the key table is incorrect	Capture the network traces and verify the key version number. ap_req kvno should be the same as for the key tab file

Caution: The workaround given below is as per understanding the code and has not been verified by testing.

Minor Status	Minor Error Code	Description	Corrective Action
KRB5KDC_ERR_NONE	-1765328384L	No error	No
KRB5KDC_ERR_NAME_EXP	-1765328383L	Client's entry in database has expired	Client entry in KDC expired; recreate the key tab files for the client. For verification, capture the network traces between the client and KDC and verify the return status.
KRB5KDC_ERR_SERVICE_EXP	-1765328382L	Server's entry in database has expired	Server entry in KDC expired; recreate the key tab files for the server. For verification, capture the network traces between the client and KDC and verify the return status.
KRB5KDC_ERR_BAD_PVNO	-1765328381L	Requested protocol version not supported	Capture the network traces and verify the protocol version (Pvno) in AP_REQ. The Protocol version should be 5; if it is an invalid protocol version, check the nfs client configuration.
KRB5KDC_ERR_C_OLD_MAST_KVNO	-1765328380L	Client's key is encrypted in an old master key	Check the KDC configuration. Nothing to do with ONTAP Kernel.
KRB5KDC_ERR_S_OLD_MAST_KVNO	-1765328379L	Server's key is encrypted in an old master key	Check the KDC configuration. Nothing to do with ONTAP Kernel.
KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN	-1765328378L	Client not found in the Kerberos database	Client entry not found in the KDC database; add the principal name and create the key tab files for the client in KDC. For verification, capture the network traces between the client and KDC and verify the return status.
KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN	-1765328377L	Server not found in the Kerberos database	Server entry not found in the KDC database; add the principal name and create the key tab files for the server in KDC. For verification, capture the network traces between the client and KDC and verify the return status.
KRB5KDC_ERR_PRINCIPAL_NOT_UNIQUE	-1765328376L	Principal has multiple entries in the Kerberos database	Client/Server has multiple entries in the KDC database; recreate the key tab files for the client/server. For verification, capture the network traces between the client and KDC and verify the return status.
KRB5KDC_ERR_NULL_KEY	-1765328375L	Client or server has a null key	Check the Windows/UNIX KDC configuration. Nothing to do with ONTAP Kernel
KRB5KDC_ERR_CANNOT_POSTDATE	-1765328374L	Ticket is ineligible for postdating	Check the Windows/UNIX KDC configuration. Nothing to do with ONTAP Kernel.
KRB5KDC_ERR_NEVER_VALID	-1765328373L	Requested effective lifetime is negative or too short	Check the Windows/UNIX KDC configuration. Nothing to do with ONTAP Kernel.
KRB5KDC_ERR_POLICY	-1765328372L	KDC policy rejects request	Check the Windows/UNIX KDC configuration. Nothing to do with ONTAP Kernel.
KRB5KDC_ERR_BADOPTION	-1765328371L	KDC cannot fulfill the requested option	Check the Windows/UNIX KDC configuration. Nothing to do with ONTAP Kernel.
KRB5KDC_ERR_ETYPE_NOSUPP	-1765328370L	KDC has no support for the encryption type	Check the Windows/UNIX KDC configuration, If the error is noticed during the filer cifs setup, then the machine account for the server name specified is inconsistent and it needs to be reset at Windows KDC.
KRB5KDC_ERR_SUMTYPE_NOSUPP	-1765328369L	KDC has no support for the checksum type	Check the Windows/UNIX KDC configuration. Nothing to do with ONTAP Kernel.

KRB5KDC_ERR_PADATA_TYPE_NOSUPP	-1765328368L	KDC has no support for the padata type	Check the Windows/UNIX KDC configuration. Nothing to do with ONTAP Kernel.
KRB5KDC_ERR_TRTYPE_NOSUPP	-1765328367L	KDC has no support for the transited type	Check the Windows/UNIX KDC configuration. Nothing to do with ONTAP Kernel.
KRB5KDC_ERR_CLIENT_REVOKED	-1765328366L	Client's credentials have been revoked	Check the Windows/UNIX KDC configuration. Nothing to do with ONTAP Kernel.
KRB5KDC_ERR_SERVICE_REVOKED	-1765328365L	Credentials for the server have been revoked	Check the Windows/UNIX KDC configuration. Nothing to do with ONTAP Kernel.
KRB5KDC_ERR_TGT_REVOKED	-1765328364L	TGT has been revoked	Check the Windows/UNIX KDC configuration. Nothing to do with ONTAP Kernel.
KRB5KDC_ERR_CLIENT_NOTYET	-1765328363L	Client not yet valid, try again later	Check the Windows/UNIX KDC configuration. Nothing to do with ONTAP Kernel.
KRB5KDC_ERR_SERVICE_NOTYET	-1765328362L	Server not yet valid, try again later	Check the Windows/UNIX KDC configuration. Nothing to do with ONTAP Kernel.
KRB5KDC_ERR_KEY_EXP	-1765328361L	Password has expired	Check the Windows/UNIX KDC configuration. Nothing to do with ONTAP Kernel.
KRB5KDC_ERR_PREAUTH_FAILED	-1765328360L	Pre-authentication failed	Check the Windows KDC configuration. This error is also encountered during a cifs setup. Provide the valid credentials for the account during the cifs setup; authentication failed with the available credentials.
KRB5KDC_ERR_PREAUTH_REQUIRED	-1765328359L	Additional pre-authentication required	Check the Windows/UNIX KDC configuration. Nothing to do with ONTAP Kernel.
KRB5KDC_ERR_SERVER_NOMATCH	-1765328358L	Requested server and ticket do not match	Check the Windows/UNIX KDC configuration. Nothing to do with ONTAP Kernel.
KRB5KRB_AP_ERR_BAD_INTEGRITY	-1765328353L	Decrypt integrity check failed	Checksum verification failed, recheck the configured filer and client tickets and capture the network traces. If the same error is noticed, regenerate the tickets for the filer and client.
KRB5KRB_AP_ERR_TKT_EXPIRED	-1765328352L	Ticket expired	Check the time synchronization between the client, filer and KDC. It should be less than 5 minutes and should be in same time zone. If they are in sync, ticket gets expired. It needs to be renewed. Regenerate the key tab files for the client and filer and retry the Kerberos mount as per the procedure.
KRB5KRB_AP_ERR_TKT_NYV	-1765328351L	Ticket not yet valid	Check the time synchronization between the client, filer and KDC. It should be less than 5 minutes and should be in same time zone. If they are in sync, the ticket is not valid, it needs to be created. Add the proper principals to the KDC and create the proper key tab files for the client and filer and retry the Kerberos mount as per the procedure.
KRB5KRB_AP_ERR_REPEAT	-1765328350L	Request is a replay	Check the time synchronization between the KDC and server and also try by setting the libdefaults time sync field to 0 [libdefaults] kdc_timesync = 0
KRB5KRB_AP_ERR_NOT_US	-1765328349L	The ticket is not for us	Nothing to do with ONTAP Kernel.
KRB5KRB_AP_ERR_BADMATCH	-1765328348L	Ticket/authenticator do not match	Capture the network traces and verify the request (ap-req) principal name in the NULL call with the principal names in the key tab file. Both the principals should be the same. If both are not the same, add the proper principal in KDC and generate the new key tab files for the filer and retry the Kerberos mount as per the procedure.
KRB5KRB_AP_ERR_SKEW	-1765328347L	Clock skew too high	Check the time synchronization between the client, KDC and the filer. It should be less than 5 minutes. All the entities should be in the same time zone.
KRB5KRB_AP_ERR_BADADDR	-1765328346L	Incorrect network address	Capture the network traces and verify the network addresses, the remote client address, and the encrypted source address are not matching.
KRB5KRB_AP_ERR_BADVERSION	-1765328345L	Protocol version mismatch	Capture the network traces and verity the message type and protocol version. It should be type AP_REQ and the version should be 5.
KRB5KRB_AP_ERR_MSG_TYPE	-1765328344L	Invalid message type	Capture the network traces and verity the message type. It should be AP_REQ.
KRB5KRB_AP_ERR_MODIFIED	-1765328343L	Message stream modified	When a user, or Service Account, or computer password get changed in KDC. When the service decrypts the ticket it is going to use its current password and decrypt the ticket. So, if the Kerberos service ticket was generated by a KDC that has not received the latest password for the Service Account, then, it will encrypt the ticket with the wrong password. Thus, the service will not be able to decrypt the ticket; and then, this error is encountered. Regenerate the tickets with the new password and retry the mount as per the procedure.
KRB5KRB_AP_ERR_BADORDER	-1765328342L	Message out of order	Verify the cifs setup/ nfs setup with Windows KDC.
KRB5KRB_AP_ERR_ILL_CR_TKT	-1765328341L	Illegal cross-realm ticket	Add the intermediate cross realm entries [domain_relam] section in the `/etc/krb5.conf` file.
KRB5KRB_AP_ERR_BADKEYVER	-1765328340L	Key version is not available	Check the configuration, nothing to do with ONTAP Kernel.
KRB5KRB_AP_ERR_NOKEY	-1765328339L	Service key not available	Check the configuration, nothing to do with ONTAP Kernel.
KRB5KRB_AP_ERR_MUT_FAIL	-1765328338L	Mutual authentication failed	Check the configuration , nothing to do with ONTAP Kernel
KRB5KRB_AP_ERR_BADDIRECTION	-1765328337L	Incorrect message direction	Check the configuration , nothing to do with ONTAP Kernel
KRB5KRB_AP_ERR_METHOD	-1765328336L	Alternative authentication method required	Check the configuration , nothing to do with ONTAP Kernel
KRB5KRB_AP_ERR_BADSEQ	-1765328335L	Incorrect sequence number in message	Check the configuration , nothing to do with ONTAP Kernel
KRB5KRB_AP_ERR_INAPP_CKSUM	-1765328334L	Inappropriate type of checksum in message	Checksum verification failed, recheck the configured filer and client tickets and capture the network traces. If the same error is encountered, regenerate the tickets for the filer and client.

KRB5KRB_ERR_GENERIC	-1765328324L	Generic error
KRB5KRB_ERR_FIELD_TOOLONG	-1765328323L	Field is too long for this implementation	Credentials length too long, it should be less than 65535. Capture the network traces and verify the same.
KRB5_LIBOS_BADLOCKFLAG	-1765328255L	Invalid flag for file lock mode	Collect the network traces between the client and the filer
KRB5_LIBOS_CANTREADPWD	-1765328254L	Cannot read password	Recheck the cifs setup or nfs setup with Windows KDC.
KRB5_LIBOS_BADPWDMATCH	-1765328253L	Password mismatch	Recheck the cifs setup or nfs setup with Windows KDC.
KRB5_LIBOS_PWDINTR	-1765328252L	Password read interrupted	Recheck the cifs setup or nfs setup with Windows KDC.
KRB5_PARSE_ILLCHAR	-1765328251L	Illegal character in component name	Nothing to do with ONTAP Kernel.
KRB5_PARSE_MALFORMED	-1765328250L	Malformed representation of principal	Capture the network traces and verify the request principal
KRB5_CONFIG_CANTOPEN	-1765328249L	Cannot open/find Kerberos `/etc/krb5.conf` configuration file	Check if the `/etc/krb5.conf` file exists or not and also check the permissions.
KRB5_CONFIG_BADFORMAT	-1765328248L	Improper format of Kerberos `/etc/krb5.conf` configuration file	Check the `/etc/krb5.conf` file contents, contents should be in proper format.
KRB5_CONFIG_NOTENUFSPACE	-1765328247L	Insufficient space to return complete information	Check the configured key tab file name, should be less than 256 characters.
KRB5_BADMSGTYPE	-1765328246L	Invalid message type specified for encoding	Capture the network traces and verify the message type, It should be ap_req(14)..
KRB5_CC_BADNAME	-1765328245L	Credential cache name malformed	Verify the cifs setup or nfs setup using Windows KDC.
KRB5_CC_UNKNOWN_TYPE	-1765328244L	Unknown credential cache type	Verify the cifs setup or nfs setup using Windows KDC.
KRB5_CC_NOTFOUND	-1765328243L	No matching credential has been found	Verify the cifs setup or nfs setup using Windows KDC
KRB5_CC_END	-1765328242L	End of credential cache reached	Verify the cifs setup or nfs setup using Windows KDC
KRB5_NO_TKT_SUPPLIED	-1765328241L	Request did not supply a ticket	Capture the network traces and verify the ticket length. It should have a proper value.
KRB5KRB_AP_WRONG_PRINC	-1765328240L	Wrong principal in request	Capture the network traces and compare the server principal name in ap-req with the filer key tab principal names.
KRB5KRB_AP_ERR_TKT_INVALID	-1765328239L	Ticket has an invalid flag set	Request contains an invalid ticket. Regenerate the tickets for the client and filer.
KRB5_KDCREP_MODIFIED	-1765328237L	KDC reply did not match expectations	Verify the cifs setup or nfs setup using Windows KDC.
KRB5_PRINC_NOMATCH	-1765328238L	Requested principal and ticket do not match	Capture the network traces and compare the server principal name in request with the filer key tab principal name.
KRB5_KDCREP_SKEW	-1765328236L	Clock skew too high in KDC reply	Check the time synchronization between the client, KDC and the filer. It should be less than 5 minutes and should be in same time zone.
KRB5_IN_TKT_REALM_MISMATCH	-1765328235L	Client/server realm mismatch in the initial ticket request	Capture the network traces and compare the realm names in the request with the filer configured realm.
KRB5_PROG_ETYPE_NOSUPP	-1765328234L	Program lacks support for encryption type	ONTAP 7G/7M will support only DES-CBC-CRC and DES-CBC-MD5. While generating key tabs using add_principal/ktpass, use the encryption type DES only.
KRB5_WRONG_ETYPE	-1765328232L	Requested encryption type not used in the message	Nothing to do with ONTAP Kernel.
KRB5_PROG_SUMTYPE_NOSUPP	-1765328231L	Program lacks support for the checksum type	Checksum type not supported, verify the client side configuration.
KRB5_REALM_UNKNOWN	-1765328230L	Cannot find KDC for requested realm	Check the `/etc/krb5.conf` file. It should be configured with the proper KDC, realm details.
KRB5_SERVICE_UNKNOWN	-1765328229L	Kerberos service unknown	Nothing to do with ONTAP Kernel
KRB5_KDC_UNREACH	-1765328228L	Cannot contact any KDC for the requested realm	Check the cifs setup or nfs setup using Windows KDC
KRB5_NO_LOCALNAME	-1765328227L	No local name found for principal name	Nothing to do with ONTAP Kernel.
KRB5_MUTUAL_FAILED	-1765328226L	Mutual authentication failed	Check the time synchronization between the client, KDC and the filer. It should be less than 5 minutes and should be in same time zone.
KRB5_RC_TYPE_EXISTS	-1765328225L	Replay cache type is already registered	Try by disabling the Kerberos reply cache option.
KRB5_RC_MALLOC	-1765328224L	No more memory to allocate in replay cache code	Check the filer memory statics.
KRB5_RC_TYPE_NOTFOUND	-1765328223L	Replay cache type is unknown	Try disabling the Kerberos reply cache option.
KRB5_RC_UNKNOWN	-1765328222L	Generic unknown RC error	Try disabling the Kerberos reply cache option.
KRB5_RC_REPLAY	-1765328221L	Message is a replay	Try disabling the Kerberos reply cache option.
KRB5_RC_IO	-1765328220L	Replay I/O operation failed	Try disabling the Kerberos reply cache option.
KRB5_RC_NOIO	-1765328219L	Replay cache type does not support non-volatile storage	Try disabling the Kerberos reply cache option.
KRB5_RC_PARSE	-1765328218L	Replay cache name parse and format error	Try disabling the Kerberos reply cache option.

KRB5_RC_IO_EOF	-1765328217L	End-of-file on replay cache I/O	Try disabling the Kerberos reply cache option.
KRB5_RC_IO_MALLOC	-1765328216L	No more memory to allocate in replay cache I/O code	Check the filer memory statics.
KRB5_RC_IO_PERM	-1765328215L	Permission denied in replay cache code	Try disabling the Kerberos reply cache option.
KRB5_RC_IO_IO	-1765328214L	I/O error in replay cache I/O code	Check the filer memory statics.
KRB5_RC_IO_UNKNOWN	-1765328213L	Generic unknown RC/IO error	Check the filer memory statics.
KRB5_RC_IO_SPACE	-1765328212L	Insufficient system space to store replay information	Check the filer memory statics.
KRB5_TRANS_CANTOPEN	-1765328211L	Cannot open/find the realm translation file	Nothing to do with ONTAP Kernel.
KRB5_TRANS_BADFORMAT	-1765328210L	Improper format of realm translation file	Nothing to do with ONTAP Kernel.
KRB5_LNAME_CANTOPEN	-1765328209L	Cannot open or find the lname translation database	Capture the network traces and verity the error and generate the new tickets with the proper encryption type.
KRB5_LNAME_NOTRANS	-1765328208L	No translation is available for the requested principal	Capture the network traces and verity the error and generate the new tickets with the proper encryption type.
KRB5_LNAME_BADFORMAT	-1765328207L	Improper format of translation database entry	Capture the network traces and verity the error and generate the new tickets with the proper encryption type.
KRB5_CRYPTO_INTERNAL	-1765328206L	Cryptosystem internal error	Checksum validation failed. Capture the network traces and verity the error and generate the new tickets with the proper encryption type.
KRB5_KT_BADNAME	-1765328205L	Key table name malformed	Nothing to do with ONTAP Kernel.
KRB5_KT_UNKNOWN_TYPE	-1765328204L	Unknown key table type	Check the cifs setup or nfs setup using Windows KDC; capture the network traces between the filer and KDC during the cifs/nfs setup
KRB5_KT_NOTFOUND	-1765328203L	Key table entry not found	Capture the network traces and verify the ap-req principal is available in key tab file or not.
KRB5_KT_END	-1765328202L	End of key table reached	Capture the network traces and verify the ap-req principal is available in key tab file or not.
KRB5_KT_NOWRITE	-1765328201L	Cannot write to the specified key table	Verify the number of memory key tab entries; it should be less than 64.
KRB5_KT_IOERR	-1765328200L	Error writing to key table	Verify the ,give the configured default_keytab_name' in the `/etc/krb5.conf` file. For UNIX_KDC it should be FILE:/etc/UNIX_krb5.keytab and for WINDOWS KDC it should be MEMORY:/etc/krb5.ketyab.
KRB5_NO_TKT_IN_RLM	-1765328199L	Cannot find the ticket for the requested realm	Capture the network traces between the filer and Windows/UNIX KDC. If the ticket is not found, add the proper principals and regenerate the tickets.
KRB5DES_BAD_KEYPAR	-1765328198L	DES key has bad parity	Checksum verification failed; retry the mount operation with the newly generated key tab files.
KRB5DES_WEAK_KEY	-1765328197L	DES key is a weak key	Checksum verification failed; retry the mount operation with the newly generated key tab files.
KRB5_BAD_ENCTYPE	-1765328196L	Bad encryption type	ONTAP 7G/7M will support only DES-CBC-CRC and DES-CBC-MD5. While generating key tabs using add_principal/ktpass, use the encryption type DES only.
KRB5_BAD_KEYSIZE	-1765328195L	Key size is incompatible with the encryption type	Key size validation failed during checksum validation. Capture the network traces and verity the error and generate the new tickets with the proper encryption type.
KRB5_BAD_MSIZE	-1765328194L	Message size is incompatible with the encryption type	Message size validation failed during check sum verification. Capture the network traces and verity the error and generate the new tickets with the proper encryption type.
KRB5_CC_TYPE_EXISTS	-1765328193L	Credentials cache type is already registered	Check the cifs setup or nfs setup using Windows KDC; capture the network traces between the filer and KDC during the cifs/nfs setup, Capture the network traces between the filer and KDC during the cifs/nfs setup
KRB5_KT_TYPE_EXISTS	-1765328192L	Key table type is already registered	Check the cifs setup or nfs setup using Windows KDC; capture the network traces between the filer and KDC during the cifs/nfs setup
KRB5_CC_IO	-1765328191L	Credentials cache I/O operation failed	Check the cifs setup or nfs setup using Windows KDC; capture the network traces between the filer and KDC during the cifs/nfs setup
KRB5_FCC_PERM	-1765328190L	Credentials cache file permissions incorrect	Check the cifs setup or nfs setup using Windows KDC; capture the network traces between the filer and KDC during the cifs/nfs setup
KRB5_FCC_NOFILE	-1765328189L	No credentials cache file found	Check the cifs setup or nfs setup using Windows KDC; capture the network traces between the filer and KDC during the cifs/nfs setup
KRB5_FCC_INTERNAL	-1765328188L	Internal file credentials cache error	Check the cifs setup or nfs setup using Windows KDC; capture the network traces between the filer and KDC during the cifs/nfs setup
KRB5_CC_WRITE	-1765328187L	Error writing to credentials cache file	Check the cifs setup or nfs setup using Windows KDC; capture the network traces between the filer and KDC during the cifs/nfs setup
KRB5_CC_NOMEM	-1765328186L	No more memory to allocate in the credentials cache code	Verify the filer memory statistics.
KRB5_CC_FORMAT	-1765328185L	Bad format in the credentials cache	Check the cifs setup or nfs setup using Windows KDC. Capture the network traces between the filer and KDC during the cifs/nfs setup.
KRB5_INVALID_FLAGS	-1765328184L	Invalid KDC option combination, which is an internal library error	Nothing to do with ONTAP kernel.
KRB5_NO_2ND_TKT	-1765328183L	Request missing second ticket	Check the cifs setup or nfs setup using Windows KDC. Capture the network traces between the filer and KDC during the cifs/nfs setup.
KRB5_NOCREDS_SUPPLIED	-1765328182L	No credentials supplied to library routine	Nothing to do with ONTAP kernel.
KRB5_SENDAUTH_BADAUTHVERS	-1765328181L	Bad sendauth version was sent	Check the cifs setup or nfs setup using windows kdc, Capture the network traces between the filer and KDC during the cifs/nfs setup.
KRB5_SENDAUTH_BADAPPLVERS	-1765328180L	Bad application version was sent by sendauth	Check the cifs setup or nfs setup using windows KDC. Capture the network traces between the filer and KDC during the cifs/nfs setup.
KRB5_SENDAUTH_BADRESPONSE	-1765328179L	Bad response during sendauth exchange	Check the cifs setup or nfs setup using Windows KDC, Capture the network traces between the filer and KDC during the cifs/nfs setup.

KRB5_SENDAUTH_REJECTED	-1765328178L	Server rejected authentication during sendauth exchange	Check the cifs setup or nfs setup using Windows KDC. Capture the network traces between the filer and KDC during the cifs/nfs setup.
KRB5_PREAUTH_BAD_TYPE	-1765328177L	Unsupported pre-authentication type	Check the cifs setup or nfs setup using Windows KDC. Capture the network traces between the filer and KDC during the cifs/nfs setup.
KRB5_PREAUTH_NO_KEY	-1765328176L	Required pre-authentication key not supplied	Check the cifs setup or nfs setup using Windows KDC. Capture the network traces between the filer and KDC during the cifs/nfs setup.
KRB5_PREAUTH_FAILED	-1765328175L	Generic pre-authentication failure	Check the cifs setup or nfs setup using Windows KDC. Capture the network traces between the filer and KDC during the cifs/nfs setup.
KRB5_RCACHE_BADVNO	-1765328174L	Unsupported format version number for replay cache	Try by disabling the Kerberos reply cache option.
KRB5_CCACHE_BADVNO	-1765328173L	Unsupported credentials cache format version number	Check the cifs setup or nfs setup using windows kdc, Capture the network traces between the filer and KDC during the cifs/nfs setup.
KRB5_KEYTAB_BADVNO	-1765328172L	Unsupported key table format version number	Capture the network traces and verify the ap-req key version in the key tab file. Both should have same key version number.
KRB5_PROG_ATYPE_NOSUPP	-1765328171L	Program lacks support for address type	Received invalid IP address type, check the client side configuration.
KRB5_RC_REQUIRED	-1765328170L	Message replay detection requires rcache parameter	Try disabling the Kerberos reply cache option.
KRB5_ERR_BAD_HOSTNAME	-1765328169L	Host name cannot be canonicalized	Hostname to IP address resolution failed. Verify the name server resolution.
KRB5_ERR_HOST_REALM_UNKNOWN	-1765328168L	Cannot determine the realm for the host	Configure the default realm.
KRB5_SNAME_UNSUPP_NAMETYPE	-1765328167L	Conversion to service principal is undefined for the name type	ONTAP has taken care and is always setting the proper type.
KRB5_REALM_CANT_RESOLVE	-1765328165L	Cannot resolve KDC for requested realm	Check the configured KDC details.
KRB5_TKT_NOT_FORWARDABLE	-1765328164L	The requesting ticket cannot get the forwardable tickets	Nothing to do with ONTAP Kernel.
KRB5_FWD_BAD_PRINCIPAL	-1765328163L	Bad principal name while trying to forward credentials	Check the cifs setup or nfs setup using Windows KDC. Capture the network traces between the filer and KDC during the cifs/nfs setup.
KRB5_GET_IN_TKT_LOOP	-1765328162L	Looping detected inside krb5_get_in_tkt	Check the cifs setup or nfs setup using Windows KDC. Capture the network traces between the filer and KDC during the cifs/nfs setup.
KRB5_CONFIG_NODEFREALM	-1765328161L	Configuration file `/etc/krb5.conf` does not specify the default realm	Configure the default realm name in libdefaults section in the `/etc/krb5.conf` file
KRB5_SAM_UNSUPPORTED	-1765328160L	Bad SAM flags in obtain_sam_padata
KRB5_KT_NAME_TOOLONG	-1765328159L	Key tab name too long	Configure proper key tab name in the `/etc/krb5.conf` file, it should be less than 256 chars. To void errors use empty `/etc/krb5.conf` file.
KRB5_KT_KVNONOTFOUND	-1765328158L	Key version number for principal in key table is incorrect	Capture the network traces and verify the key version number. ap_req kvno should be same as with the key tab file.

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