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Old 03-25-2013, 03:32 PM   #1
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Registered: Oct 2011
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Kerberos error message: error code 52

I installed Cygwin on win7 to run a Bash script, which will talk to a Service Provider using Curl / Kerberos. The win7 is part of a domain where a KDC is installed/enabled.

In order to obtain a TGT before running the script, I issued the command from Cygwin: "kinit principal@DOMAIN.COM". However, I received an error message: "kinit: KRB5 error code 52 while getting initial credentials". The Kerberos library included in my Cygwin is 1.5.2-4.

Google search replies with some hints of UDP vs. TCP with old Kerberos version of 1.2.7. Wireshark captures show that the KRB LIB is using UDP instead of TCP.

Tried to use "udp_preference_limit = 1" to force to use TCP --> no difference. The library still uses UDP.

Tried to use "kdc = tcp/" -> the KRB library does not recognize it.

What else can I try?
Thank you very much in advance.

Last edited by rosect; 03-25-2013 at 08:15 PM.
Old 04-04-2013, 05:56 AM   #2
Registered: Mar 2013
Location: the India
Distribution: Ubuntu,Debian and CentOS
Posts: 35

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kinit: KRB5 error code 52 while getting initial credentials

while dealing with kerboros this is very common error,
in past i resolved this by adding

; for Windows 2003
default_tgs_enctypes = rc4-hmac des-cbc-crc des-cbc-md5
default_tkt_enctypes = rc4-hmac des-cbc-crc des-cbc-md5
permitted_enctypes = rc4-hmac des-cbc-crc des-cbc-md5
; for Windows 2008 with AES
default_tgs_enctypes = aes256-cts-hmac-sha1-96 rc4-hmac descbc-crc des-cbc-md5
default_tkt_enctypes = aes256-cts-hmac-sha1-96 rc4-hmac descbc-crc des-cbc-md5
permitted_enctypes = aes256-cts-hmac-sha1-96 rc4-hmac descbc-crc des-cbc-md5
; for MIT/Heimdal kdc no need to restrict encryption type
# The following krb5.conf variables are only for MIT Kerberos

these few authentication lines in krb5.conf file
try this ,this may helpful


cygwin, error, kerberos, security

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