Cannot connect to SQL Server Database - sql
I cannot connect to SQL Server Database.
I am trying to setup Membership with roles on my website using the MSDN Tutorial. It used to work only locally on my machine, however after following advice given on different forums, and on stackoverflow, the situation worsened, and now I can't even connect to the SQL Server Database.
When I run the aspnet.regsql.exe utility, I get the following error message:
"Setup failed.
Exception:
Unable to connect to SQL Server database.
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Details of failure
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System.Web.HttpException: Unable to connect to SQL Server database. ---> System.Data.SqlClient.SqlException: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj)
at System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, SqlConnection owningObject)
at System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64 timerExpire, SqlConnection owningObject)
at System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(String host, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, Int64 timerStart)
at System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance)
at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance)
at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection)
at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options)
at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject)
at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject)
at System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject)
at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)
at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
at System.Data.SqlClient.SqlConnection.Open()
at System.Web.Management.SqlServices.GetSqlConnection(String server, String user, String password, Boolean trusted, String connectionString)
--- End of inner exception stack trace ---
at System.Web.Management.SqlServices.GetSqlConnection(String server, String user, String password, Boolean trusted, String connectionString)
at System.Web.Management.SqlServices.SetupApplicationServices(String server, String user, String password, Boolean trusted, String connectionString, String database, String dbFileName, SqlFeatures features, Boolean install)
at System.Web.Management.SqlServices.Install(String database, SqlFeatures features, String connectionString)
at System.Web.Management.ConfirmPanel.Execute()"
Also, I am unable to use the ASP.NET Website Adimistration Tool. When I click on the Security tab I receive the following error:
"There is a problem with your selected data store. This can be caused by an invalid server name or credentials, or by insufficient permission. It can also be caused by the role manager feature not being enabled. Click the button below to be redirected to a page where you can choose a new data store.
The following message may help in diagnosing the problem: Unable to connect to SQL Server database."
So, I click on the 'Choose Data Store' button as instructed, which allows me to select a a Provider. The provider is named 'AspNetSqlProvider', it has a Test link beside it. I click on Test and receive the following error message:
"Could not establish a connection to the database.
If you have not yet created the SQL Server database, exit the Web Site Administration tool, use the aspnet_regsql command-line utility to create and configure the database, and then return to this tool to set the provider."
The only other option on this page is to click "Back".
Can somebody please help me sort this out? It's been over a week now and I've searched high and low for answers and have been given so many links to posts that have been of no help. I'd appreciate any help at all.
I have tried running the Configuration Surface Tool and enabling pipes, local/remote connections, though this has made no difference at all.
I have even gone so far as to completely uninstall Visual Web Developer and SQL Server 2005 and 2008 and delete all traces left behind of these applications, and then re-downloaded them all and re-installed them all again.
No luck so far.
Please help
Thanks
Bael
Edit:
I have since tried disabling my firewall changing the port, with no luck.
SOLUTION:
Yes, this may be a little drastic. And I think that this solution should only be a last resort when all else fails.
I managed to fix whatever was wrong by uninstalling SQL Server 2005 and 2008. And then Registering for, downloading SQL Server Express Edition 2008 (with Management Tools) and installing them.
After installation was complete, I closed Visual Web Developer, opened it again, and clicked on the Security tab after opening ASP.NET Website Administration Tool and everything has just "worked" since...
Can you connect using sqlcmd locally?
Can you connect using sqlcmd from a remote machine?
Are you using a SQL username/password, or trusted Windows authentication? If the latter, run CommandPrompt/Powershell as a different user and see if you can connect.
My guess is that you haven't added logins to SQL, and that you're running aspnet.regsql.exe without escalated privileges. If it runs successfully from a Command Prompt that was Run As Administrator, then this is a useful sign.
There are a number of potential issues, but the escalated privileges is something I see often these days. It's better to create a dedicated account, give that an appropriate amount of access to the SQL instance, and then run Command Prompt as that account (shift-right-click to get the old 'Run as' option).
Related
Azure web app Connect to SQL Database random error
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Could not find stored procedures in SQL Server, IIS 6 server
I have an application that is running an calls a stored procedure. This application works fine on another PC connecting to a database, but not on localhost. The database was backed up and restored on my dev computer. The source code is exactly the same thus there is no naming/typo error. When I run the app, I get this error: System.Data.SqlClient.SqlException: Could not find stored procedure 'xyz'. at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) I know the application is connecting to the database properly as it has already logged into the database. What I have tried: grant all permissions to the db_user(I have made the db_user the owner of the database and granted all permissions of the stored procedure to the user) ran aspnet_regiis to configure the application on the SQL Server. However, it seems like I am still getting the error. Any advise will be greatly appreciated. I have googled the rest of the similar could not find stored procedure on stackoverflow, but none of the resolutions worked.
DNN website: [SQL] Access Is Denied for Non-DNN-Framework Data Access
In a DNN page containing ANYTHING that accesses custom data (i.e., site-specific tables), we always get the following error: Access Is Denied [Win32Exception (0x80004005): Access is denied] [SqlException (0x80131904): A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)] System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) +6749670 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) +815 Current config: IIS pool set up as a local service SQL runs as a localsystem service All of the users have the proper DB ownership DB can be accessed OK for the main DNN install (i.e. users can log in and all DNN-related database infrastructure can be read and displayed from the database), but for the custom modules that read the Connection string from the web.config, it throws the error above. We've tried to: Change to poolidentity and give the permission to that particular user/service, and we are experiencing the same problem. I'm not sure if IIS Application Pools or SQL users are the issue. The error seems to be about the SQL instance which may or may not be set up correctly. However, if it's an SQL instance issue, as per the error message, we are not sure why database access for DNN functions (login, tabs, modules, etc.) are allowed but other connections (via LINQ data context for site-specific schema, or via where we hard-code the connection string) are denied.
Error message: (provider: Shared Memory Provider, error: 0 - No process is on the other end of the pipe.)
I am trying to deploy my website on windows server 2003. Am i missing something or what is wrong from the following error message, how can I correct it? Thank I am having the error message: A connection was successfully established with the server, but then an error occurred during the login process. (provider: Shared Memory Provider, error: 0 - No process is on the other end of the pipe.) 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. Exception Details: System.Data.SqlClient.SqlException: A connection was successfully established with the server, but then an error occurred during the login process. (provider: Shared Memory Provider, error: 0 - No process is on the other end of the pipe.) Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [SqlException (0x80131904): A connection was successfully established with the server, but then an error occurred during the login process. (provider: Shared Memory Provider, error: 0 - No process is on the other end of the pipe.)] System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +1019 System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +108 System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +126 System.Data.SqlClient.SqlConnection.Open() +125 NHibernate.Connection.DriverConnectionProvider.GetConnection() +104 NHibernate.Tool.hbm2ddl.SuppliedConnectionProviderConnectionHelper.Prepare() +15 NHibernate.Tool.hbm2ddl.SchemaMetadataUpdater.GetReservedWords(Dialect dialect, IConnectionHelper connectionHelper) +89 NHibernate.Tool.hbm2ddl.SchemaMetadataUpdater.Update(ISessionFactory sessionFactory) +80 NHibernate.Impl.SessionFactoryImpl..ctor(Configuration cfg, IMapping mapping, Settings settings, EventListeners listeners) +599 NHibernate.Cfg.Configuration.BuildSessionFactory() +104 MyProject.API.Data.SessionManager..cctor() in C:\Dev\Code\API\Data\SessionManager.cs:27
Typically, to troubleshoot this, you go to SQL Server Configuration Manager (SSCM) and: ensure Shared Memory protocol is enabled ensure Named Pipes protocol is enabled ensure TCP/IP is enabled, and is ahead of the Named Pipes in the settings Maybe it can help: Could not open a connection to SQL Server Note : If this is a new instance of SQL Server be sure SQL Server and Windows Authentication is enabled Right Click the Server in SSMS and pull up server properties Go to Security--> Select 'SQL Server and Windows Authentication Mode' Restart the Server and Login with the credentials
Check if your connection string has "Trusted_Connection=true" added.
I had this same error message, turns out it was because I didn't have mixed mode auth enabled. I was on Windows Auth only. This is common in default MSSQL deployments for vSphere, and becomes an issue when upgrading to vSphere 5.1. To change to mixed mode auth you can follow the instructions at http://support.webecs.com/kb/a374/how-do-i-configure-sql-server-express-to-enable-mixed-mode-authentication.aspx.
I had the same error by in SQL Server Management Studio. I found that to look at the more specific error, look at the log file created by the SQL Server. When I opened the log file, I found this error Could not connect because the maximum number of ’2′ user connections has already been reached. The system administrator can use sp_configure to increase the maximum value. The connection has been closed I spend quite some time figuring this out. Finally running the following code fixed my problem. sp_configure 'show advanced options', 1; go reconfigure go sp_configure 'user connections', 0 go reconfigure go More on here and here Edit To view logs search for "logs" on windows startup button, click "view events logs". From there go to Applications under "Windows Logs". You can also choose "System" logs to see system wise errors. You can use filter on current logs by clicking "Filter Current Logs" on right side and then select "Error checkbox".
Just another possibility. I had to restart the sql server service to fix this issue for me.
The "real" error was in the SQL error log: C:\Program Files\Microsoft SQL Server\MSSQL14.MSSQLSERVER\MSSQL\log\ERRORLOG Path will depend on your version of SQL Server
You should enable the Server authentication mode to mixed mode as following: In SQL Studio, select YourServer -> Property -> Security -> Select SqlServer and Window Authentication mode.
Goto to SQL server using windows Credentials - > Logins - > Select the Login - > in the Properties -> Check if the Log in is enabled/disabled. If Disabled, make it enable, this solution worked for me.
Adding this to my connection string worked for me: Trusted_Connection=true
In C# and SQL SERVER, we can fix the error by adding Integrated Security = true to the connection string. Please find the full connection string: constr = #"Data Source=<Data-Source-Server-Name>;Initial Catalog=<DB-Name>;Integrated Security=true";
By looking into SQL SERVER log file in "C:\Program Files\Microsoft SQL Server\MSSQL13.MSSQLSERVER\MSSQL\Log\ERRORLOG", it says "Login failed for user 'XXXXX'. Reason: An attempt to login using SQL authentication failed. Server is configured for Windows authentication only. [CLIENT: ]" The fixing method is to open "Microsoft SQL Server Management Studio" -> Right click the SQL server and then select "Properties" -> Security -> Change the authentication to mixed mode. -> Restart SQL server.
I was getting this error today. In my case, looking at the ERRORLOG file on the SQL server gave me this error: Login failed for user ''. Reason: Failed to open the database '' specified in the login properties. This was because I had deleted the "Default database" of this user a few days ago. Setting the default database to my new database fixed the problem. Hope this helps someone else.
I forgot to add the "Password=xxx;" in the connection string in my case.
I had the same error, Fixed it by ensuring that SQL server had SQL authentication mode enabled. see images below. To enable, go to server properties. Click on the Security tab and select the SQL server and window server auth mode and press ok You will need to restart the server for the changes to reflect, should be fine now.
Enable Mixed authentication mode while installing MSSQL server. Also provide password for sa user.
Hi Just enable both for server authentication as per screen shot attached below.
All good and valid courses of investigation especially the logs for more info. For those hitting this it might be a simple gotcha where when you have created the DB User you may have enforced a password policy and left the user to change the password on first login (i.e. left the checkboxes around the password field at their default values). Very easily done in SQL Management Studio and can of course cause authentication issues off the bat that are masked unless you look into the logs.
Check that the server name you're logging into with SQL Management Studio matches your connection string. I was getting this error today. It turned out that I hadn't realised the machine with SQL Server installed had multiples servers running. I had in fact put my database in a totally different server to the one I thought I was using. (So my connection string was pointing to a server with no database) Hence, When .net tried to access the database it couldn't find anything and gave only a misleading error message about pipes. I opened the correct server in SQL Management Studio, added my database to and then all worked fine. (If the correct server isn't available in the dropdown, try browsing for it.)
In my case it was a spelling mistake in the database name in connection string.
This is old but I had the problem in the connect dialog that it was still defaulting to a database I had removed. And by running those commands the default database in the prompt wasn't changing. I read somewhere I can't find now, that if you open the "Connect to Server" dialog and then select "Options" and select "Connection Properties" tab by typing the default database (no by selecting from the drop down) the database will then stay on that new value entered. This sounds like a flaw to me but in case someone was wondering about that, that should fix the issue, at least on SQL Server 2012
I know i am probably the only one that will have this problem in this way. but if you deleted the mdf files in the C:/{user}/ directory, you will get this error too. restore it and you are golden
I ran across this in a code-first application which expected the database to be there: Make sure the database is created / the name in the connection string is correct.
I had the same problem. I tried all the suggested answers in this page but to no avail! Finally, I tried the steps below and it worked for me: In SQL Server Management Studio Object Explorer, right-click the server, and then click Properties. On the Security page, under Server authentication, select the new server authentication mode, and then click OK. In the SQL Server Management Studio dialog box, click OK to acknowledge the requirement to restart SQL Server. In Object Explorer, right-click your server, and then click Restart. If SQL Server Agent is running, it must also be restarted. Then try this in your Package Manager Console: Scaffold-DbContext "Server=YourServer;Database=YourDB;Persist Security Info=False;User=YourUserName; Password=YourPassword; MultipleActiveResultSets=False;Encrypt=False; TrustServerCertificate=False; Connection Timeout=30;" Microsoft.EntityFrameworkCore.SqlServer -OutputDir Models -Context DatabaseContext -f
In my case, my situation was a little different. 1. My Mistake: I was missing a ";" in stringConnection. I know this is a newbie bug, but I am new to C # and SQL Server. I have one day :) private string connectionString = "Data Source=localhost;Initial Catalog=FundamentalsCSharp" + "User=sa;Password=123456"; 2. My Solution: Put a ";" it was missing after the phrase "FundamentalsCSharp" and it worked. private string connectionString = "Data Source=localhost;Initial Catalog=FundamentalsCSharp;" + "User=sa;Password=123456"; 3. Note: Change "FundamentalsCSharp" for your owned Initial Catalog. I hope this can be of use to someone. Thanks!
In my case, my project is Asp.net Core 3.1 and this is my connection string "ConnectionString": "Data Source=.; Initial Catalog=WebDB; user Id=sa; Password=123" And database name in sql server webdb (lower case in sql server). After many time change database name webdb in connecion string and worked fine.
For those doing entityframework code first, also check to enture you have done your migrations. The best place to look for the root cause is the sql server error log
In my case My disk was full 99%, It worked after I freed up to 80% of the disk.
SQL CLR function and OleDb permissions
I have a .NET 3.5 C# library that uses OleDb to pull data from an Excel file and return it in a DataRowCollection which is used by a CLR Table-Valued Function in SQL Server 2005. I deployed the ASSEMBLY in SQL Server as sa and used PERMISSION_SET = EXTERNAL_ACCESS. The sa login has EXTERNAL ACCESS ASSEMBLY and the database has TRUSTWORTHY on. The assembly is signed and I used the following caspol.exe command which indicated that it was successful: -m -ag All_Code -url "C:\Testing\sqlFunction.dll" FullTrust -n "sqlFunction" The SQL Server instance, my library and the Excel document are all on the same machine. The SQL Server service is running as Local System (but while trying to get this to work I also tried running it as the AD user that I was logged in as which is also a local administrator). I created a command line application to test run the library and everything runs fine and data is returned as expected. But when I run the function from SSMS, I get this error in the result pane: A .NET Framework error occurred during execution of user-defined routine or aggregate "GetExcelFile": System.Security.SecurityException: Request for the permission of type 'System.Data.OleDb.OleDbPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed. System.Security.SecurityException: at System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet) at System.Security.PermissionSet.Demand() at System.Data.Common.DbConnectionOptions.DemandPermission() at System.Data.OleDb.OleDbConnection.PermissionDemand() at System.Data.OleDb.OleDbConnectionFactory.PermissionDemand(DbConnection outerConnection) at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) at System.Data.OleDb.OleDbConnection.Open() at System.Data.Common.DbDataAdapter.QuietOpen(IDbConnection connection, ConnectionState& originalState) at System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataTable[] dataTables, Int32 startRecord, Int32 maxRecords, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataTable dataTable) at GetExcelFunction.GetFile() at GetExcelFunction.InitMethod(String logname) I've deployed this on my personal dev machine (XP PRO) and our dev sandbox (Server 2003) and got the same error. Most code access security issues revolve around the assembly running from a network share - but that's not the case here. Any ideas? I'm tapped out.
Solved it! PERMISSION_SET = EXTERNAL_ACCESS was not enough. I had to go all the way down to PERMISSION_SET = UNSAFE and then it started working. I can't believe I didn't try that before.
I am sorry that I am not providing a solution to the exact problem here. But, you can use OPENROWSET function to work with Excel files from SQL Server. CLR is not necessary, unless there is something that I don't know of.
I am looking the code using reflector. And I am purely speculating looking at the code. Try initializing System.Data.OleDb.OleDbPermission class & use it's Add method to include the excel connection string to have permission (either before connection opens or query execution). I hope that helps.