My domains actually trust each other because I have access from both sides and can log in with Sql authentication. But when I try to access it with windows authentication it gives the "Login failed. The login is from a Un- trusted domain and cannot be used with Windows authentication.
(Microsoft SQL Server, Error: 18452)" error. Plus the sql server accepts sql and windows auth.
Thanks
It happened to me. In web.config, when I checked connectionString it was set to Integrated Security=true. Make Integrated Security=false if you are providing the username and password.
There are two ways to resolve this problem. One is to use RUNAS command. Another way to use credential manager in windows. The main problem here is your computer is in one domain and the SQL SERVER is another domain. SQL SERVER doesn't allow due to security issue. See Doc for more details
Related
The authentication mode is "Mixed" for my SQL Server 2016.
I'm using SSMS to run cross-server queries.
I've checked the user account & have ensured that the account has proper authority. I can use a different account and run cross-server queries as expected. The account has proper authority to the databases in question and it has authority to them. I've tried everything I've seen on the internet searches I've done and no luck. The account can login using SSMS.
My linked server properties are:
The account's login properties are:
Has anyone else seen this & have a resolution?
** EDIT: rebooting the target server fixed the issue
When creating a linked server you choose the authentication mechanism by which the remote connection will be made. If you select the fourth option (pictured), the remote login must be a Sql Server authenticated login. It cannot be a windows login.
The only way to connect through a linked server using windows authentication is to forward the credentials of the login on the local server. There is no option to specify a windows username and password.
Indeed, there is no way, ever, to specify a password when connecting to a Sql Server with windows credentials, since the whole point of windows credentials is that you're already authenticated. That happened when you logged in to windows in the morning*
You can only (and must always) specify a password if you are using Sql Server authentication.
What seems to be going on in your case is that the linked server may have been created with the wrong security options. This is just easier to explain with an image:
* More precisely, a connection will be made using the account that the client is running under. If you start SSMS using a "runas /user ..." command, then the windows credentials used to connect to servers will be the credentials specified in runas
I have two SQL Servers on different domains. I am trying to connect to SQL server "A" using SSMS on domain "B", but getting this error.
Login failed. The login is from an untrusted domain and cannot be used with integrated authentication. (Microsoft SQL Server, Error 18452).
Please help.
Given that you state the servers are in different domains ... the first comment from #squillman gives the answer. You must do one of the following:
establish a domain trust between the domains
Create an identical local (non-domain) user on each server, and use that in your connectionstring per #Charlieface, this won't work.
switch to a SQL login rather than using a Windows account
I have an ASP.NET WebAPI that is calling a SQL Server (currently 2008, but will migrate on something newer soon). Authentication is Windows authentication. I have given the IIS Apppool that executes the WebAPI the rights to access the database.
When I use the following connection string, everything works:
Server=localhost; Database=LPG; Integrated Security=SSPI;
For the production system, the WebAPI and the database server are probably on different machines, so I want to use the name of the server instead of localhost.
Server=my.server.com; Database=LPG; Integrated Security=SSPI;
With this connection string, I get the following error.
Login failed. The login is from an untrusted domain and cannot be used with Windows authentication.
This is probably because the IIS APPPOOL - User is a local account and when calling my.server.com it can't use local accounts.
Does anyone knows how to resolve that problem?
Thanks in advance,
Frank
The problem is your production server may not be setup for delegation. The web server and the db server must have a relationship so the user on the browser flows through to the database.
I need to connect to a SQL Server 2008 instance in another Windows domain to manage it. We only use Windows Authentication.
In Windows XP, I could use the "Manage Network Passwords" feature to store on my local machine my username and password for the remote machine. Doing so would cause SQL Server Management Studio to use those credentials, instead of my local credentials, when connecting to that server. This worked great, and prevented my having to enter a username or password every time I connected with SSMS.
But, Holy Cow, after upgrading to Windows 7, I can no longer do this. Adding my remote domain credentials in Credential Manager fails to produce the desired behavior. SMSS 2008 R2 ignores the stored credentials, and instead, always sends my local credentials, causing the login to fail every time. There's not even a way, within SMSS, to enter alternate credentials, so the upshot is that I simply cannot access the remote server!
The login fails with the following message:
Login failed. The login is from an
untrusted domain and cannot be used
with Windows authentication.
(Microsoft SQL Server, Error: 18452)
How can I get SMSS on Windows 7 to work the same way it did on Windows XP?
It looks like there is a bug in the Windows 7 Credential Manager that causes this behavior. After lots of Internet research, I found some ugly workarounds, but also found a great one:
In Credential Manager, add an entry for the remote server, but instead of adding just the server name, like database.contoso.com, add the server name with the SQL Server port, like so:
database.contoso.com:1433
This results in the desired behavior, with no pain!
Source: http://social.msdn.microsoft.com/Forums/en-US/sqlsecurity/thread/c05a90e4-cb16-46f6-9072-37083c65696d/
Also remember, of course, that you need to prefix the remote username in Credential Manager with the remote domain name, like so:
database\administrator
MSSQL Server is in the "abc" domain and have mixed mode authentication.
I am connecting from the machine which is not in domain or in a domain "xyz" but with in the same network using MSSQL Jdbc driver 2.0. I have logged in as admin or account in xyz domain.
It works fine using following url for connection for "sa" or SQL Mode Authentication.
jdbc:sqlserver://%DB_IP%:%DB_PORT%;SelectMethod=cursor;DatabaseName=dbname
It doesn't work For window authentication using credential "MSSQLDomain\username" i.e "abc\username", using following url
jdbc:sqlserver://%DB_IP%:%DB_PORT%;SelectMethod=cursor;integratedSecurity=true;DatabaseName=dbname;
Gives following error.
Login failed for user ''. The user is not associated with a trusted
SQL Server connection.
I have tried adding property Trusted_Connection=Yes to url, but still gives same error.
I don't want to map the drive of the SQL Server. I am able to access the any shared folder of the SQL Server Machine by providing "MSSQLDomain\username" and password.
It works fine for both authentication mode, if both machine is in same domain.
If I am using jtDS Driver from the machine which is not in domain or in "xyz" domain within same network i.e same subnet, it works fine.
This is the deliberate and correct behaviour of Windows Authentication.
It is because the Domain from which you are connecting from, is not the same Windows Domain as the one where your SQL Server instance resides.
I believe there are methods for bridging the Domains so to speak, however they require custom and tricky implementation. You also will have to configure a trust relationship between the domains.
The following thread contains discussions which you will likely find useful.
http://sql-server-performance.com/Community/forums/p/24601/137574.aspx
Changing the login credentials might help,
use SQL authentication instead of nt authentication
https://support.microsoft.com/en-us/kb/555332
Symptoms
After you install Microsoft SQL Server 2014, SQL Server 2012, SQL Server 2008, SQL Server 2005, or SQL Server 2000 and you try to connect to the server that is running SQL Server, you receive one of the following error messages:
Login failed for user '%.*ls'. The login is a SQL Server login and cannot be used with Windows Authentication.%.*ls
Login failed for user ''. The user is not associated with a trusted SQL Server connection. (Microsoft SQL Server, Error: 18452)
Login failed for user ''. (Microsoft SQL Server, Error: 18456)
Resolution
This problem occurs if the user tries to log in with credentials that cannot be validated. This problem can occur in the following scenarios:
Scenario 1:
The login may be a SQL Server login but the server only accepts Windows Authentication
To resolve this issue, configure SQL Server in Mixed Authentication Mode.
Scenario 2:
You are trying to connect by using SQL Server Authentication but the login used does not exist on SQL Server
To resolve this issue, verify that the SQL Server login exists. For more information, see Create a login in SQL Server Books Online.
Scenario 3:
The login may use Windows Authentication but the login is an unrecognized Windows principal
An unrecognized Windows principal means that Windows can't verify the login. This might be because the Windows login is from an untrusted domain. To resolve this issue, verify that you are logged in to the correct domain.
I have been involved with making a SQL server connection cross to domains like that, and it is exceptionally painful. In order to use credentials from another domain, the domain where you are assigning the permissions has to trust the domain, where the account is coming from. IT Pro's are generally VERY reluctant to trust another domain in this manner, and for good reason, so if this trust relationship has not been established it might not be very likely to convince the admins to do this.
Once you have the trust relationship established, you will probably need to register the SPN's for your SQL server in Active Directory, and assign delegation permissions. This type of environment is very difficult to setup, troubleshoot and maintain.
I hope that there is some other way that you can do this, because it sounds like you are headed for a very difficult scenario.
Hope it helps
Rihan