Users cannot login on workstations. I have checked LDAP servers, I could connect to it using LDAP Browser.

I have cleared logs, turned on debug mode, and tried to relogin.

zmd-messages.log

Code:
[DEBUG] [12/01/2014 13:08:07.834] [1284] [ZenworksWindowsService] [91] [] [LocMgr] [] [Location settings unavailable so Proxy can't be identified] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:07.834] [1284] [ZenworksWindowsService] [91] [] [ZenCache] [] [(Thread 91) GetObject(PROXY_DEFAULT, UserContext{_LocalId=none; _RemoteId=(Public)}) called] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:07.834] [1284] [ZenworksWindowsService] [91] [] [ZenCache] [] [proxy_default(public) doesn't exist in memory key cache] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:07.834] [1284] [ZenworksWindowsService] [91] [] [ZenCache] [] [(Thread 91) GetObject returning <not cached> in 0 ms] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ZenCasa] [] [ObtainAuthTokenFromServer returned with code 0 ] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ZenCasa] [] [ObtainAuthToken returned with code 0 ] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [RemotingService] [] [Extra attributes are : ] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [RemotingService] [] [passwordAllowChange||TRUE] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [RemotingService] [] [Adding Extra attribs passwordAllowChange TRUE] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [RemotingService] [] [loginTime||20141201120053Z] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [RemotingService] [] [Adding Extra attribs loginTime 20141201120053Z] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [RemotingService] [] [passwordRequired||TRUE] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [RemotingService] [] [Adding Extra attribs passwordRequired TRUE] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [RemotingService] [] [user_dn||CN=KovacsEva,OU=DABAS,O=PEST] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [RemotingService] [] [Adding Extra attribs user_dn CN=KovacsEva,OU=DABAS,O=PEST] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [RemotingService] [] [passwordExpirationInterval||7776000] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [RemotingService] [] [Adding Extra attribs passwordExpirationInterval 7776000] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [RemotingService] [] [passwordExpirationTime||20141207072731Z] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [RemotingService] [] [Adding Extra attribs passwordExpirationTime 20141207072731Z] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [RemotingService] [] [loginGraceLimit||6] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [RemotingService] [] [Adding Extra attribs loginGraceLimit 6] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [RemotingService] [] [loginGraceRemaining||6] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [RemotingService] [] [Adding Extra attribs loginGraceRemaining 6] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [RemotingService] [] [Entered ZENLoginUser] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [RemotingService] [] [ZENLogin calling GetSession] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [RemotingService] [] [ZENLoginUser calling RegisterUser] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ZenCache] [] [(Thread 91) GetObject(userResponse:Registration, UserContext{_LocalId=none; _RemoteId=cn=KovacsEva,ou=DABAS,o=PEST||JUSTICE_TREE}) called] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ZenCache] [] [userresponse:registrationcn=kovacseva,ou=dabas,o=pest||justice_tree doesn't exist in memory key cache] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ZenCache] [] [(Thread 91) GetObject returning <not cached> in 0 ms] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ZenCache] [] [(Thread 91) GetObject(userResponse:Registration, UserContext{_LocalId=none; _RemoteId=KovacsEva}) called] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ZenCache] [] [userresponse:registrationkovacseva doesn't exist in memory key cache] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ZenCache] [] [(Thread 91) GetObject returning <not cached> in 0 ms] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [RegistrationModule] [] [RegisterUser could not use cached login, going over the network.] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [KovacsEva] [RegistrationManager] [] [RegisterUser - Starting] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ZenCache] [] [(Thread 91) GetObject(deviceResponse:Registration, UserContext{_LocalId=SYSTEM; _RemoteId=1fc59130b14dca4ba3852db4d08f3a5b}) called] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ZenCache] [] [(Thread 91) GetObject returning C:\Program Files (x86)\Novell\ZENworks\cache\zmd\ZenCache\43f88924-1ca8-4ab8-8228-620511f1d693 in 1 ms] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [KovacsEva] [RegistrationManager] [] [RegisterUser calling getAuthtoken with host: 10.15.0.6:2645] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ZenIdentity] [] [Using cached AuthToken] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [KovacsEva] [RegistrationManager] [] [Got a valid token from host: 10.15.0.6:2645] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ZMD] [] [Getting Session Capability] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ConnectMan] [] [FindFirstContent()] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ConnectMan] [] [host pmb-zcm.pest.justice.hu connection status: Good] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ConnectMan] [] [Found location https://10.15.0.6/ status: Good] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ConnectMan] [] [Using location https://10.15.0.6/ status: Good] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ConnectMan] [] [FindFirstContent() returning https://10.15.0.6/] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ZenCache] [] [(Thread 91) GetObject(PROXY_OVERRIDE, UserContext{_LocalId=none; _RemoteId=(Public)}) called] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ZenCache] [] [proxy_override(public) doesn't exist in memory key cache] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ZenCache] [] [(Thread 91) GetObject returning <not cached> in 0 ms] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [LocMgr] [] [Location settings unavailable so Proxy can't be identified] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ZenCache] [] [(Thread 91) GetObject(PROXY_DEFAULT, UserContext{_LocalId=none; _RemoteId=(Public)}) called] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ZenCache] [] [proxy_default(public) doesn't exist in memory key cache] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ZenCache] [] [(Thread 91) GetObject returning <not cached> in 0 ms] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [KovacsEva] [RegistrationManager] [] [Registering User: KovacsEva] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.161] [1284] [ZenworksWindowsService] [91] [] [ZenIdentity] [] [Using cached AuthToken] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.770] [1284] [ZenworksWindowsService] [91] [] [CommonLogout] [] [ZENLogout entered] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.770] [1284] [ZenworksWindowsService] [91] [] [CommonLogout] [] [ZENLogout calling GetSession] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.770] [1284] [ZenworksWindowsService] [91] [] [CommonLogout] [] [Calling ClearCasaCredentials] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.770] [1284] [ZenworksWindowsService] [91] [] [ZenCasa] [] [DeleteCredentials entered] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.770] [1284] [ZenworksWindowsService] [91] [] [ZenCasa] [] [DeleteCredentials returned] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.770] [1284] [ZenworksWindowsService] [91] [] [ZenCasa] [] [DeleteCredentials entered] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.770] [1284] [ZenworksWindowsService] [91] [] [ZenCasa] [] [DeleteCredentials returned] [] [] [] [ZENworks Agent] 
[DEBUG] [12/01/2014 13:08:08.770] [1284] [ZenworksWindowsService] [91] [] [RemotingService] [] [Calling ClearAuthTokenCache] [] [] [] [ZENworks Agent]