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I am unable to connect to Microsoft active directory with crowd 3.4


Hi Folks,

I am unable to connect Microsoft AD with crowd.

Crowd Version : 3.4

Settings are as follows :

Connector : Microsoft Active Directory

Hostname :

Port : 636

SSL : None


Result : test failed

There was a problem communicating with LDAP server.;socket closed;nested exception is;socket closed


Able to ping Microsoft directory server ( from crowd server.

Is issue with LDAP or in Crowd?




1 answer

1 accepted

0 votes
Answer accepted
Marcin Kempa Atlassian Team Dec 15, 2019

Hi @Amar 

It seems to me that you are trying to connect over LDAPS (secure ldap protocol, port number indicates that), however you've entered hostname as:

What happens if you enter there: 



but with SSL set to: LDAPS?


If that also does not work can you verify that AD is configured to use LDAPS and this port is visible for Crowd?

Are you able to connect on 389 non secure port using standard ldap protocol (ldap://

In order to check if LDAPS is up and running on AD (Windows Server) side you can do:

  1. In Windows click on Start and search ldp.exe
  2. In ldap window select Connection menu and fill following parameters:
    1.  Server - this is your host name (I assume this would be ``)
    2. port: 636
    3. Select 'ssl' checkbox
  3. Click ok. You should see information about established connection


Let me know if that helps,

Best Regards,

Marcin Kempa

Thanks Marcin Kempa

it worked for me :)

Added below line in Hostname and set SSL :)

Thank Again

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