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Login failed for WINDOWS Administrator login. (Microsoft SQL Server, Error: 18456)

Posted By:      Posted Date: August 30, 2010    Points: 0   Category :Sql Server
 
Hi All, I am using SQL server 2008. While adding SQL user i unknowingly deleted the SQL authentication user from SQL server. Now the problem is i can not login with Windows Authentication neither i can login as "sa" user as this user is disabled. Please suggest me how to get in to SQL server management studio. Database is up and running but i can not access the database any more after doing this blunder. Please suggest me how to recover SQL instance, Thank you.


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Login failed for user 'sa'. (Microsoft SQL Server, Error: 18456, Severity: 14, State: 1) When I us

  

When I use the following setting to connect server, it succeeds
Server type: Database Engine
Server name: Home-PC
Authentication: Windows Authentication

User name: Home-PC\John
Password:<empty>

However, when I try to use the following setting to connect the same server, it fails as always
Server type: Database Engine
Server name: Home-PC
Authentication: SQL Server Authentication 
Login:
sa
Password:
1234567

The Error Message as follows
TITLE: Connect to Server
------------------------------
Cannot connect to Home-PC.
------------------------------
ADDITIONAL INFORMATION:
Login failed for user 'sa'. (Microsoft SQL Server, Error: 18456)
For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&EvtSrc=MSSQLServer&EvtID=18456&LinkId=20476

Then, I enter the server to change some

Login to SQL, using Windows 7, SQL Server Error 18452, "Login failed. The login is from an untrusted

  
I have a File/Sharing Server which is Server 2008 SP2 and SQL Server 2008 is installed on it. My system which is on the same workgroup, was running Windows 2003 Server, which I have saved Server 2008 login credential on it and used that credential to login to SQL Server on Server 2008 system in Windows Authentication mode using SQL management studio. Recently I installed Windows 7 on that system, and I have also saved that Server 2008 credential in Windows 7 Credential Manager. The problem is here when I want to login in Windows Authentication mode using SQL management studio like past, and I will get below Error: Cannot connect to [SERVER] Login failed. The login is from an untrusted domain and cannot be used with Windows authentication. (.Net SqlClient Data Provider) Error Number: 18452 Severity: 14 State: 1 Line Number: 65536 I tried that registry solution (DisableLoopbackCheck=0x01 this thread), but no luck with that. I have checked the outgoing packets when I click on connect, and I found out that SQL management studio tried to send my local windows credential instead of Server 2008 saved credential. I don't want to login in SQL Mode, and also I don't want to convert my server to Domain controller. Is there any other solution with this issue? Regards

Login failed for user sa Microsoft Sql Server 18456

  

Its unbelievebale that I am not able to login using my sa password .I am setting it by loggin into windows mode still it is giving error

Login failed for user sa Microsoft Sql Server 18456

 


"SQLSERVER DBA" "INDIA"

Error: 18456, Severity: 14, State: 16 Login failed for user 'NT AUTHORITY\SYSTEM'

  
Hi,   can someone help me with this error. Error: 18456, Severity: 14, State: 16 Login failed for user 'NT AUTHORITY\SYSTEM' [CLIENT:<local machine>] I've found several Threads but not with the NT AUTHORITY\SYSTEM.   Thanks for help.   Jens

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Hi.

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It worked correctly in windows server 2003. we changed our Server'OS to windows server 2008. but we have a problem to login. after try to login we see this error :

Login failed for user ''. The user is not associated with a trusted SQL Server connection.

Server Error in '/dabir' Application.

Login failed for user ''. The user is not associated with a trusted SQL Server connection.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

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Source Error:

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I would appreciate help with the following issue:

 

I have created a local group in our SQL 2008 server and added two Windows user accounts "DOMAIN\UserName"  I  then added the local group to the database and granted read only access.

 

The users are trying to link tables using MS Access using and ODBC connection and getting the following error.

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Date                      6/30/2010 1:01:54 PM

Log                         SQ

Error 18452 Microsoft SQL Server Login

  

I have Client - Server system where client is MS access 2007 and server database is SQL server 2008. Conversion happened recently from MS Access 2003 and SQL Server 2005. User suddenly experiences these kind of error which they never encountered. Please help.

 

Microsoft SQL Server Login

---------------------------

Connection failed:

SQLState: '28000'

SQL Server Error: 18452

[Microsoft][ODBC SQL Server Driver][SQL Server]Login failed. The login is from an untrusted domain and cannot be used with Windows authentication.

 

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The login already has an account under a different user name. (Microsoft SQL Server, Error: 15063)

  

 

Hi,

 

I have two databases xxx and yyy.

I added a new user to xxx named as "Admin". It ownes some schemas.

Afterwards I added a new user to yyy named as "Admin". It ownes the same schemas.

Then I pressed ok button, got the error:" The login already has an account under a different user name. (Microsoft SQL Server, Error: 15063)".

 

 

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Thanks


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