18456 Sql Server Error Windows Authentication
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Sql Server Error 18456 Login Failed For User
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18456 Sql Server Authentication 2012
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18456 Sql Server Authentication 2005
could not be loaded. Loading... Loading... Rating is available when the video has been rented. This feature is not available right now. Please try again later. Published on Jan 30, 2013Explains the common sql server error 18456 and possible solutions.http://www.helpdesk-blog.comhttp://www.helpdesksoftware.bizThe "Login Failed" error 18456 can occur due to a variety of reasons. The 18456 error is sql server error 18456 severity 14 state 5 displayed when the server name you entered was correct, but the connection cannot be granted due to one of a number of reasons. The 18456 error message does not provide much information on the cause login failure. This is because it is intended to hide details from unauthorized users, in case someone tries to enter the SQL server by guessing information. What are the Main Causes of SQL Server Error 18456?(1) Error 18456 commonly occurs when mixed mode authentication is enabled. You may be trying to log in using Windows authentication with a user that the SQL server does not recognize as a SQL user login. (2) Error 18456 will occur If you are using SQL server authentication and the login or password is incorrect.(3) This error can also occur in the event of disabling or locking the username in the server, and also in the case of password expiration.How can a SQL Server Error 18456 be Resolved?Before proceeding with troubleshooting, take the time to v
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more http://stackoverflow.com/questions/23667670/unable-to-log-in-to-server-in-sql-server-2008-r2-management-studio about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack http://serverfault.com/questions/346525/cannot-login-to-sql-server-2008-r2-with-windows-authentication Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Unable to log in to server in SQL Server 2008 R2 Management sql server Studio up vote 3 down vote favorite I have a SQL Server 2008 R2 instance and can log in using the sa user. But I want to define another user (administrator) to log in with SQL Server Management Studio, so I did the following: Logged in to the server in Management Studio as sa. Right clicked on the database name. Clicked on properties. Then under permission, I select the sql server error required username (administrator). And I grant him all the permission. But when I tried to log in using administrator, I got the following error: Login failed for user “administator” Error 18456. Can anyone advise what might be the problem? sql-server authentication sql-server-2008-r2 ssms share|improve this question edited Feb 15 at 1:57 J0e3gan 6,27993059 asked May 15 '14 at 1:11 John John 20731231 add a comment| 2 Answers 2 active oldest votes up vote 3 down vote accepted You need to add a server login: Connect to your SQL Server with SSMS as sa. Drill into the server's Security folder in SSMS's Object Explorer pane. Right-click on the server's Security > Logins folder that appears in Object Explorer. Click on New Login... in the context menu that appears. Provide details of the new login in the Login - New dialog that opens - particularly its General, Server Roles, and User Mappings pages (along the left). (See the screenshots of each page with sample input at the bottom of the answer.) You may need to add a database user depending on your needs, but a server login (like your sa login) is necessary to connect to the SQL Server instance using Windows or SQL Server authentication. Mapping
Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Server Fault Questions Tags Users Badges Unanswered Ask Question _ Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Cannot login to SQL Server 2008 R2 with Windows authentication up vote 4 down vote favorite 2 When i try to connect to SQL Server (2008 R2) using Windows authentication: i cannot: Checking the Windows Application event log, i find the error: Login failed for user 'AVATOPIA\ian'. Reason: Token-based server access validation failed with an infrastructure error. Check for previous errors. [CLIENT: ] Log Name: Application Source: MSSQLSERVER Event ID: 18456 Level: Information User: AVATOPIA\ian OpCode: Task Category: Logon i can login to the computer itself using Windows authentication. i can log into SQL Server using the local Windows Administrator account. We can connect to 8 other SQL Servers on the domain using Windows Authentication. Just this one, whitch is the only one that is 2008 R2 is failing. So i assume it's a bug with *2008 R2. Note: i cannot logon locally, or remotely, using Windows authentication. i can login locally and remotely using SQL Server Authentication. Update Note: It's not limited to SQL Server Management Studio, standalone applications that connect using Windows authentication: fail: Note: It's not a client problem, as we can connect fine to other (non-SQL Server 2008 R2 machines): i'm sure there's a technote or knowledge base article describing why SQL Server 2008 R2 is broken by default, but i can't find it. Update 2 Matt figure out the change that Microsoft made so that SQL Server 2008 R2 is broken by default: Administrators are no longer administrators All that remains is to figure out how to make Administrators administrators. One of these days i'm going to start a list of changes around Microsoft's "broken by default" initiative. Steps