[Samba] number of groups of NT account causes authentication problems

Gopal Bhat gbhat at taos.com
Wed Mar 5 20:22:37 GMT 2003

Is there anyway to increase this limit of 15? Using /etc/system or any 
other configuration file/parameter?
I will post this question on SUN BigAdmin also, if I am able to find an 
answer, it will be great.

Michael G. Noble wrote:

>Solaris has a 15 member limit to groups. Since you are under that 
>limit, it should not be a problem.  I have Samba running on an Ultra
>60 with Solaris8, samba version 2.2.5.  I have users who are members
>of at least 14 groups and not having any problems accessing shared
>On Tue, 2003-03-04 at 13:35, Gopal Bhat wrote:
>>I am facing a strange problem related to authentication of NT users 
>>accessing the SAMBA server.
>>Here are the details:
>>Server:  Solaris 9, SUN Ultra 60,  SAMBA 2.2.7a with PAM and WINBIND
>>Client: Windows XP, NT4.0, 2000
>>Created a share \\server\test (UNIX: /export/SMB/test)  with access to 
>>group 'TestGoup' where 'TestUser' is a member.
>>'TestUser' is a member of 10 more groups along with 'TestGroup' (Total 
>>number of TestUser's group = 11)
>>With the above settings 'TestUser' can't access the share 
>>'\\server\test', and the following message shows up in the Client.log:
>>[2003/03/04 13:31:52, 0] smbd/sec_ctx.c:initialise_groups(244)
>>  Unable to initgroups. Error was Not owner
>>[2003/03/04 13:31:52, 0] smbd/sec_ctx.c:initialise_groups(247)
>>  This is probably a problem with the account domain\testuser
>>[2003/03/04 13:31:52, 0] smbd/service.c:make_connection(599)
>> client ( Can't change directory to /export/SMB/test 
>>(Permission denied)
>>If I change the number of groups the user 'TestUser' belongs from 11 to 
>>8 ('TestGroup'  + 7 other groups), the user can access the share 
>>'\\server\test' without any problems.
>>It looks like there is some limitation on number of NT group memberships 
>>'smbd' can handle.  
>>Note: 'wbinfo' returns all the right groups of the user without any 
>>Is there anyone out there who is aware of this problem and knows a 
>>workaround/solution to this?
>>I really appreciate any help from the prestigious SAMBA Team.
>>To unsubscribe from this list go to the following URL and read the
>>instructions:  http://lists.samba.org/mailman/listinfo/samba

More information about the samba mailing list