SQL Security :: Windows Authentication Login Is Created Automatically In DB
Apr 24, 2015
In my DB (SQL 2012) one windows authentication is created automatically and a schema is created exactly automatically that this user is owner of this schema. (e.g the user is domainx and schema exactly domainx).
I created a DDL Trigger on my DB to find out who and how it is created , but I didn't get any useful information.
I change the owner of schema that I can delete the schema and after that delete the user, and sometimes because the user is owner of a service , I have to alter the owner of the service to DBO and delete the user , but again and again exactly this user and schema (e.g domaninx ) are created as soon as I delete it.
I have read these topics : [URL] .... and [URL] .... but can't solve my problem.
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Jun 11, 2015
We have a production server "prod"  which has a user say 'test' that lets the users connect to the application and  a logon trigger which stops them from connecting to the server through SSMS. I  log ship 'prod' to the 'rep' database and the user 'test' is obviously created in the logshipped database 'rep' during the logshipping.
Now the login 'test' does not have any login from server 'rep', But people can still login to the 'rep' server and query the 'rep' db . I checked with SUSER_SNAME and found the SID of the user in rep server which I never created and which is not even present in the login names, Even If I create a new username in the 'prod' db, after logshipping the new user is replicated in the 'rep' server.
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Jun 17, 2015
We're using windows server 2012 R2 and sql server 2014 standard with mixed mode authentications. When we connect to other windows server using windows authentication and hit the following error:"the target principal name is incorrect cannot generate sspi context"..is the above err related to mixed mode authentications at installation?
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Sep 17, 2015
This is for SQL Server 2005
When logged onto a server and connecting using windows authentication (either by server name or localhost) I am getting in fine, but when I connect using the IP I get the following error.
I can log in using SQL Server authentication with the IP.
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Jul 15, 2015
I am setting up SQL audit on sql servers in my environment based on requirement. I want to create database specifications ASAP database created. I tried DDL trigger but Audit doesn't support triggers. So I created audit specifications on model database. the only problem with this is every specification created on new database with same name.database specification name includes newly created database name or other methods to create database specifications on newly created databases.
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Sep 9, 2015
I have two SQL Server machines - RPTPROD and DATAPROD.
I wanted to create a linked server from RPTPROD pointing to DATAPROD using Windows Authentication. Â When I tried to create this linked server, I keep getting this error
"Login failed for user 'NT AUTHORITYANNOYMOUS LOGON' (Microsoft SQL Server,Error: 18456)". Â
On the "Security" page, I chose "Be made using the login's current security context". Â I'm sysadmin on both SQL Server machines. Â
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Feb 18, 2002
Hi,
I have created a Windows user login and have granted it the appropriate roles (including a revoke).
As a test I also created a standard user and gave it the same roles as above.
When I run a query against the revoked table, the results are unexpected.
The Windows user can run the query, and the standard user gets a permissions error (which is what i expect).
Does anyone have any ideas as to what is happening here? I am still confused.... Does it have anything to do with the public permission that much be granted?
Thanks
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Jan 16, 2007
Is it possible to create a windows authentication login for each of the computers on my network that will connect to sql server. I am developing a program that will be installed on multiple computers and we do not want to actually have to log in to sql server since we will have to log in to the server before opening the program and we dont want to have 2 logins. I would like to use windows authentication so that I do not have to program multiple connection strings in my program so that if more than 1 person accesses the database at the same time it will not cause a problem with using the same login. Is this possible and if so how would I go about setting up the logins. I am using SQL Server 2005 and XP SP2
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Mar 17, 2006
Hi,
I have a problem with sql server 2005 express, when i try to connect to an sql database it says login: is not a trusted connection to an sql database. I have gone into reg edit and changed the authentication setting from windows oly mode 1 to mixed mode 2. It still has the same problem, does anyone have any idea what the problem may be?
kind regards
Chris J
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Jul 7, 2007
Hello All,
I'm hoping someone can help me with this puzzle.
Most logins I've created have been SQL Server authenticated. I assign the login newEmployee to a role existingRole, and ensure the role has the required permissions. This didn't seem to be rocket science....
My company has been provided with an application with a SQL Server back-end. My instructions were to create a Windows authenticated login and give it full access to the database. I followed the above principles, but running the application, the user got the error -
SELECT permission denied on object 'sysobjects', database 'databasename', owner 'dbo'.
So I decided to try the simplest possible scenario to make it work:
I've created a login DOMAINewEmployee with Windows authentication.
DOMAINewEmployee has been granted access to databasename.
By default, DOMAINewEmployee is a member of Public.
Public has been granted all available permissions on all objects.
ie... grant all on userTables to public
........grant all on sysobjects to public
........grant all on otherSystemTables to public
etc.
Running the application, the user still gets the above error. I'd send the problem back to the vendor, except if I've logged onto the PC as DOMAINewEmployee, querying -
select * from dbo.sysobjects
via Query Analyser produces the same error message. (An equivalent error message is produced when querying a user-created table).
To compare, I then created a login newEmployee2 with SQL Server authentication.
newEmployee2 has been granted access to databasename.
select * from dbo.sysobjects
runs successfully from Query Analyser (as to any queries on user-created tables).
What else is required to grant access to tables from a Windows authenticated login?
( What really scares me, is that the application will run if I make the Windows authenticated login a member of server roles System Administrator and Database Creators, then the application will run - but I don't want this to be the permanent solution. Even after doing this, the above query still fails in Query Analyser for that login, suggesting that there is something wrong with how I configured the permissions. )
Any help would be appreciated.
Thanks.
Kim.
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Feb 9, 2008
Hi,
I have just installed Windows Vista and SQL Server 2005. When I try to connect to my local server with Windows Authentication, I get the follwoing message:
Login failed for user <user> (Microsoft SQL Server, error: 18456)
Any help please. Thanks.
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Feb 6, 2006
I'm working on an ASP.NET project, and we're attempting to switch from SQL Server authentication to Windows authentication to connect to the database.
It works fine locally when I debug in Visual Studio, but when it hits the web server, I get the error: "Login failed for user '(null)'. Reason: Not associated with a trusted SQL Server connection."
IIS has anonymous access disabled, and Integrated Windows Authentication is checked. The web.config file has:
<authentication mode="Windows"/><identity impersonate="true"/>
The database I'm attempting to access is on a different machine than IIS, and the connection string doesn't contain a username or password, and has "Trusted_Connection=Yes", and "Integrated Security=SSPI".
From what I've been able to find online, I'm guessing the problem is due to IIS and SQL Server residing on different machines, but I'm not sure how to fix it.
Any ideas?
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Aug 12, 2015
We have see login failures for windows accounts. Below is the error message.
Description: In our env most logins are windows accounts. Initially we thought it is an UAC issue and we tried to launch the SSMS using "Run as Administrator". However, we are seeing login failures.
Enviroment:
Microsoft SQL Server 2014 - 12.0.2402.0 (X64)
RTM Enterprise Edition (HyperVisor)
Error Message in Error Log :
2015-08-10 22:36:45.290 Logon Error: 18456, Severity: 14, State: 11.
2015-08-10 22:36:45.290 Logon Login failed for user 'domainloginname'. Reason: Token-based server access validation failed with an infrastructure error. Check for previous errors. [CLIENT: 10.xxx.xxx.xxx]
[code]....
We tried dropping this account and re-creating the windows account with same permissions but still result is same. It throws same error message. Login failure message !!!
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Aug 29, 2007
HI all,
I would like to ONLY allow using SQL Server authentication and restrict Windows Authentication. At the moment, i set the security to "SQL server and windows authentication". Now, even though i set the password for "sa", i can ignore the SQL Server authentication and just use Windows authentication to manipulate database objects???
can anybody give some suggestions to restrict windows authentication and allow sql server authentication?.
Thanks in Advance
Best Regards
Ihsan
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Apr 26, 2015
Oracle and Teradata are able to capture the windows/client login that connects to their database with a functionnal ID.I've searched around and I don't think MS SQL can do this...I administer SQL 2014 server and also SAS Enterprise guide product. I've created sql server logins for several teams so everyone shares the same sql server login which is used to bind the SAS library to my SQL server database.
However, when looking at activity monitor, I can't drill down to which user is executing a particular query. I only see the SQL login which is share amongs 200 other folks.On the other hand, when they connect from SAS to Oracle or Teradata, I can see the shared login + additionally their windows NT login used to connect to SAS which is awesome....they can't fool me by using a shared/funcionnal ID....i still see who's using that ID...
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Mar 31, 2006
Hi--
I am building an intRAnet website using windows authentication for website access and SQL Server access ( Trusted_Connection = true ).
In IIS I have these settings:
Allow Anonymous = unchecked (false)
Windows Authentication = Checked (true)
Digest windows = checked (true)
In my Web.Config file:
authentication="windows"
impersonate="true"
allowusers="*"
When I pull up the page these are my credentials:
Security.Principal.Windows: mydomainmyuserid (this is correct what it shows on my page)
Me.User.Identity: mydomainmyuserid (this is correct what it shows on my page)
Threading.currentThread.currentUser mydomainmyuserid (this is correct what it shows on my page)
So the ASP.NET page recognizes it is me and my domain. However, when i click a button to pull some data from a database I get the error message: Login failed for user '(null)'. Reason: Not associated with a trusted SQL Server connection.
My data access on SQL Server works fine. The weird thing is when I debug on my machine it pulls data fine. but when I copy the files to the windows 2003 server it doesn't work.
Do i have to do something with delegation?
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Aug 12, 2015
We are seeing login failures for windows accounts. Below is the error message.
Description:Â In our env most logins are windows accounts. Initially we thought it is an UAC issue and we tried to launch the SSMS using "Run as Administrator". However, we are seeing login failures.
Enviroment:
Microsoft SQL Server 2014 - 12.0.2402.0 (X64)
RTM Enterprise Edition (HyperVisor)
Error Message in Error Log :
2015-08-10 22:36:45.290 Logon       Error: 18456, Severity: 14, State: 11.
2015-08-10 22:36:45.290 Logon       Login failed for user 'domainloginname'. Reason: Token-based server access validation failed with an infrastructure error. Check for previous errors. [CLIENT: 10.xxx.xxx.xxx]
2015-08-10 22:41:23.470 Logon       Error: 18456, Severity: 14, State: 11.
2015-08-10 22:41:23.470 Logon       Login failed for user 'domainloginname'. Reason: Token-based server access validation failed with an infrastructure error. Check for previous errors. [CLIENT: 10.xxx.xxx.xxx]
Troubleshooting done:
- Recreated the windows login in sql server. Doesn't work.
- ran sp_valdidatelogins. it doesn't return any rows.
- I belong to sysadmin role and when I say, getting below error message.
xp_logininfo 'domainloginname'
/*
Msg 15404, Level 16, State 19, Procedure xp_logininfo, Line 64
Could not obtain information about Windows NT group/user 'domainloginname', error code 0x5.
*/
We tried dropping this account and re-creating the windows account with same permissions but still result is same.It throws same error message. Login failure message !!!
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Feb 19, 2007
I have a test environment set up at home with a small windows server 2003 Active Directory domain. I created a windows security group on the dc and added myself and another user to the group. I then use this group as a login for SQL Server and add the login to the sysadmin server role. This works exactly as I would expect on the Windows Server computer (which is also the Domain Controller) regardless of which computer I use to connect to this Windows Server computer. However, when I set up the exact same login on the local sql server instance of my client laptop running windows xp pro, the I get an error message (Login failed for user MYDOMAINdgolds...) when I attempt to connect to the local instance of SQL server, even though I am able to connect to the instance on the domain controller with no problems using this same client laptop under the same user account. The only way I am able to connect locally on the laptop under this account (which does not have local admin privileges on any box, for testing purposes) is to add the user account separately as a login, rather than as part of a group. I'm curious as to why being a member of a security group that is part of the sysadmin server role does not allow me to connect to the local instance of SQL Server on this client laptop. The windows server computer is running SQL2k5 Enterprise, and the client laptop is running SQL2k5 developer. Any insight into this would be appreciated.
Thanks,
Dave
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Aug 1, 2006
Hello Everyone,
I am trying to connect SQL database through code but I get this error,I have spent days to solve it but unfortunately I couldn't...Here is my code in VB express(OP:windows 2000 with SP4)I am new to VB,so it makes the situation more difficult for me.
my code is:
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim conn1 As SqlConnection = _
New SqlConnection("Data Source=.SQLEXPRESS;" & _
"Integrated Security=SSPI;" & _
"database=deneme3_database;")
'Open connection
conn1.Open()
MessageBox.Show("Connection succeeded.")
'Close connection
conn1.Close()
MessageBox.Show("Connection closed.")
End Sub
The error message is,it is in german but it is clear I guess:)
" Die von der Anmeldung angeforderte "deneme3_database"-Datenbank kann nicht geöffnet werden. Fehler bei der Anmeldung.
Fehler bei der Anmeldung für den Benutzer 'ADPLANatalay'. "
Thank you in advance!
Can
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Jan 4, 2006
Hi, Happy New Year!
I have been struggling with this problem for a while with SQL 2005. I have never had such login problem with SQL 2000. Here is the scenario:
I have installed SQL2005 standard version on a XP Pro box and I am trying to access it from another XP Pro machine. I can access it using a SQL user name and password that I set up on the server, but I have not had luck with using Windows NT Integrated security. When I try to connect to it (e.g. by a UDL file), I get an error saying Login failed for user €˜HP-AMD64Guest€™ where €˜HP-AMD64€™ is the name of the PC running the SQL 2005. I can access the files on the machine without any problem. I do not understand why it uses €˜Guest€™ that is not what I use to log on my machine. Does anyone have any clue to offer me?
Thank you in advance!
h
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Oct 1, 2015
Current: One common SQL login is being used by SQL DBA on all the servers
New Plan: Creating one windows AD group, adding the DBA's to that group and create as a login with sysadmin server access on all the SQL Server boxes
how to achieve this activity. Creating SQL login is fine but how to change the ownership of various objects, jobs to new login on all servers?
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Oct 24, 2015
Deleting a Login from a server instance and adding it back did not show that the login was still mapped to databases. In SQL Server 2008, adding a Windows Login did not permit access to end user databases until the Windows Login was mapped to various databases. In SQL Server 2012, once a Windows Login is added to SQL Server Security, it may access ANY end user databaseWe use the following to circumvent this problem, Windows Login by Windows Login: DENY VIEW ANY DATABASE TO [TESTTest1]
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May 29, 2007
We are looking at developing an SQL Server 2005 Database and I would like to use Windows Authentication rather than SQL Server Authentication to connect our client app.
In our development environment, we have two Servers, one being used as a file server and the other as an SQL Server. We have now set up a domain using the file server as the domain controller. (We had previously been set up to use a workgroup).
I have set up an active directory group called SqlDevelopers and added an active directory user called Jonathan to it.
On the SQL Sever, in management studio, I have set up a new server login which uses windows authentication called DomainSqlDevelopers. I used the GUI to verify I could see the domain and the group.
The default database is set to a test database on the server. A user in the test database is mapped to the DomainSqlDevelopers and given the Roles dbo, db_datareader, db_datawriter.
To test the log in, on the server, I logged out as administrator and in as Jonathan. I could successfully access the server through management studio using windows authentication.
However, if I log in as Jonathan on my client PC and try to access the SQL Server using management studio and windows authentication, I have problems.
The first time I try I will get a timeout error. If I try again will get either:
Login failed for user ''. The user is not associated with a trusted SQL Server connection
Or
Cannot generate SSPI context
I can€™t determine any pattern to which of the above errors I get.
However, if I log in as administrator on my client PC, I can connect to the server using management studio and windows authentication.
Sounds like Active Directory/Domain or other Network issue (Not really my area). I would be grateful for any help.
Thanks,
Jon
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May 11, 2007
How to give authentication for Send Mail Task component?
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May 14, 2015
If we have a "pool" SQL login, a one that uses SQL Server authentication, and this login is used by different domain account to access SQL Server, is there a way to audit which domain account used that "pool" login to do something on a object in SQL Server? I have to keep this way of accessing SQL Server, so how to create a login for every domain account accesses SQL Server
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Apr 18, 2007
Hi there,I have installed MS SQL Server 2005 on my machine with windows authentication. But now I want to switch the authentication mode to SQL Authentication. I am unable to switch, I can’t find the proper way to do so here in 2005.Could any one help me in doing this?Thank you,-Ahsan
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Mar 25, 2004
Hello,
(Using win2k, sqlserver2k, framework 1.1)
I have an fairly data-heavy application that uses Windows authentication (Trusted connection/aspnet account) to connect to Sql Server. The site uses IIS basic authentication.
On the dev server everything works fine but when I move to the live server things get strange and it starts to crawl along. (Pages load OK but then it just crawls as it loads the datagrids etc. Sometimes it brings back incomplete/incorrect data )
BUT When I use Sql Authentication to connect to Sql Server and there is no problem at all!
Ok, there is something obviously wrong with the live server (which is identical setup to dev)but I dont know where to start.
Any ideas??
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May 15, 2006
Hi all,
I've got two applications which both have a database on my MS SQL 2000 server. The problem is, one application must use Windows Integrated Authentication (which it is currently using and cannot be changed) whilst the other application which I'm trying to configure must use a SQL password.
Since the server has already been configured to use Windows Integrated Authentication for the existing database and application, how do I configure the other database to use the SQL password?
Thanks.
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May 12, 2006
Hi all,
My work is using a shared application
which accesses a MSSQL 2000 database. To access the application, the
folder on the Windows 2003 Server is shared and users can access the
folder through a shared drive.
For the application to access the
database, it uses an ODBC connection to the MSSQL server which
originally used the SA password.
We have recently switched to using
Windows Integrated Authentication because we believe it offers a
higher level of security. However the only way in which we have been
able to enable this is to add the windows users to the SQL server.
The problem with this is that the
application sets permissions for individual users on what records
they can see within the database. We have found that by adding the
windows users to the SQL Server, they can bypass the permissions the
set by the application by simply using any application that can use
an ODBC connection, such as Enterprise Manager, and see all the
database.
One way around this would be to set up
domains of users with access privileges to the tables which reflect
the permissions set by the application, and configuring a view of the
data so they may only see the records that they have permissions to.
However to do this would require a high administrative cost to ensure
that changes made in the application are reflected in the privileges
of the SQL server.
Instead, is there a way the SQL server
can authenticate that the ODBC connection is coming from the correct
application using Windows Integrated Authentication?
This would allow the applcation to
determine security, and stop users from connecting to the SQL server
using other applications.
Alternatively, can the SQL server,
using Windows Integrated Authentication, also ask the application to
supply a username and password?
Any help with this matter would be
greatly appreciated.
Thanks!
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Dec 26, 2007
Hi,
i've sql 2005 std sp2,and i'm working with a program that create every view month's a new database automatically.
my question is - how can i make a full backup of the newly created database automatically only one time when it's created?
Thx
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Mar 26, 2008
Hallo there,
I just upgraded from Windows XP Pro to Windows Vista Bussiness and tried to reinstall SQL Server 2005 Developers Edition. After the installation i downloaded (using microsoft windows update) and installed all the service packs for sql and vista available.
My problem is when i open sql server management studio and try to connect to my default instance using windows authentication and database engine, an 18456 error occurs.
I enabled all the protocols and all the ports
I disabled windows firewall and antivirus (eset nod32)
I installed all service packs available
I have also installed Visual Studio 2005 without installing sqlexpress
But nothing happens!
Please i am very desperate, any information will be gratefully accepted.
This is my installation Information
Code Snippet
Microsoft SQL Server Management Studio 9.00.3042.00
Microsoft Analysis Services Client Tools 2005.090.3042.00
Microsoft Data Access Components (MDAC) 6.0.6001.18000 (longhorn_rtm.080118-1840)
Microsoft MSXML 3.0 5.0 6.0
Microsoft Internet Explorer 7.0.6001.18000
Microsoft .NET Framework 2.0.50727.1434
Operating System 6.0.6001
Thank you in advance,
Patonios
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Nov 24, 2005
create login dave with password='abc', default_database=tempdb
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May 8, 2003
Hello
Can anyone tell me what is the difference between sql authentication and windows authentication.
Examples of each would be very useful
Many thanks in advance
Steve
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