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Failed to resolve host sqlpro9/13/2023 ![]() ![]() If the Database Engine supports contained databases, confirm that the login wasn't deleted after migration to a contained database user. Login is deleted after a migration to a contained database user. When connected, add your Windows user as an individual login. If you're trying to connect using your administrator credentials, start your application by using the Run as Administrator option. ![]() You aren't running your application (for example, SSMS) as an administrator. The error message usually displays the domain name. Verify that you're properly logged into the correct domain. You're trying to connect using Windows authentication but are logged into an incorrect domain. Use a UDL file or a script to prove a connection is possible with a hard-coded connection string.Įnsure you're connecting to the correct server. As a temporary workaround, hard-code the connection string and test. If the application was written by your company and the connection string is programmatically generated, engage the development team to resolve the issue. If the application is SQL Server Integration Services (SSIS), there may be multiple levels of a Configuration file for the job, which may override the Connection Manager settings for the package. Alternatively, work with your SQL Server administrator to reset the password for the account. To fix the issue, use the correct password in your application or use a different account if you can't remember the password. You're using SQL Server Authentication, but the password you specified for SQL Server login is incorrect.Ĭheck the SQL error log for messages like " Reason: Password did not match that for the login provided" to confirm the cause. For more information, see Create a Login. Or if it's a windows login grant access directly or add it to a local or domain group that is allowed to connect to the database server. If it is, grant the login access to your SQL Server. To resolve this issue, validate that you are connecting to the appropriate server. Reason: Could not find a login matching the name provided.This can be a common issue if you deploy an application that uses a DEV or QA server into production and you fail to update the connection string. ![]() Login failed for user 'Domain\username'. Reason: Could not find a login matching the name provided. The SQL Server Errorlog will have one of the following messages: ![]() If it's present but misspelled, correct that in the application connection string. Verify that the SQL Server login exists and that you've spelled it properly. Login doesn't exist on the SQL Server instance you're trying to connect to. Server is configured for Windows authentication only. Reason: An attempt to login using SQL authentication failed. Note: You can see a message like the following one in the SQL Server Error log for this scenario: Alternatively, you can change your application to use Windows Authentication mode to connect to SQL Server. For more information, see Change server authentication mode. You can review and change the authentication mode for your SQL Server instance on the Security page under Properties for the corresponding instance in SQL Server Management Studio (SSMS). Verify that SQL Server is configured to use SQL Server and Windows Authentication mode. You're trying to use SQL Server Authentication, but the SQL server instance is configured for Windows Authentication mode. For potential causes and suggested resolutions, see: Potential cause If the domain name is specified, the problem is a failing Windows user account login. If the domain name isn't specified, the problem is a failing SQL Server login attempt. Login failed for user 'NT AUTHORITY\ANONYMOUS' LOGON Login failed for user '' or login failed for user '\' Select the exact error that you're experiencing to troubleshoot the issue: The following examples are some of the common login failures. In many cases, error codes include descriptions. User logins can fail for many reasons, such as invalid credentials, password expiration, and enabling the wrong authentication mode. Started trying suggestions from comments too but stopped when I realized I might be messing things up more.You get this error message when a connection attempt is rejected because of an authentication failure. I also went through the following article, changed TC/IP settings, restarted, but nothing. I did come across this article, followed the steps, but didn't seem to help. Yesterday, I installed IIS on my machine and set up a site using my IP address - don't know if this has anything to do. Note, I can log on to the actual server with no problem. (provider: SSL Provider, error: 0 - The wait operation timed out.) (.Net SqlClient Data Provider) Now, I get the following error:Ī connection was successfully established with the server, but then an error occurred during the pre-login handshake. Until yesterday evening, I was able to connect to my server from my local machine. ![]()
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