I hope someone can help me with this. I have differente projects (websites) in Visual Studio 2010. Today when I try to expand one of the databases in the data connections of the server explorer, I get a window with this error:
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: SQL
Network Interfaces, error: 26 - Error Locating Server/Instance
Specified) 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
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: SQL
Network Interfaces, error: 26 - Error Locating Server/Instance
Specified)
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.
The situation occurs in ALL my projects. I suppose this happens because I installed Kaspersky 2012 yesterday. Please I need help.
May be installing Kaspersky stopped SQL Server service.
Type services.msc in run dialog box to open services panel .
Make sure SQL Server service has status as Started .
If not , right click on SQL Server and select start.
Of course this is if you are using Windows .
I think the problem is with your firewall. Here is something you can do to remove this error:
http://blog.sqlauthority.com/2009/05/21/sql-server-fix-error-provider-named-pipes-provider-error-40-could-not-open-a-connection-to-sql-server-microsoft-sql-server-error/
Related
I'm not very familiar with ASP.NET. How comes my database is not working in my project? what am I missing exactly?
ASP.NET in Visual Studio
The website works when I run the project but once I interact with the database it shows me this error:
"Something went wrong! Contact your devloper
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: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)"
Sometimes following error happening in windows application. The error is like
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)
I am having more than 50 forms in my application and most of the times there is no error. But sometimes, there is an error like this and when I am trying to connect sql its works fine.
I am following this simple MVC tutorial (Visual Studio) and there is no database created in App_Data. I think it might have to do with my installing mySQL, but I uninstalled it and it still doesn't work.
This message pops up when I reopen my Visual Studio
The Web project "project" requires SQL Server 2012 Express LocalDB, which is not installed on this computer. To upgrade the project datbase to use latest SQL Server Express LocalDB...
I tried googling that message and tried a lot of different things, I even reinstalled Visual Studio. I have Visual Studio 2015.
This is the error message when I try to run the page "/movies"
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: SQL Network Interfaces, error: 50 - Local Database Runtime error occurred. Cannot create an automatic instance. See the Windows Application event log for error details.
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 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: SQL Network Interfaces, error: 50 - Local Database Runtime error occurred. Cannot create an automatic instance. See the Windows Application event log for error details.
Source Error:
Line 18: public ActionResult Index()
Line 19: {
Line 20: return View(db.Movies.ToList());
Line 21: }
Line 22: "
I am getting error when try to execute post installation scripts to configure R. I installed sql server 2016 ctp3 as named instance.
Running below command :
“%programfiles%\RRO\RRO-3.2.2-for-RRE-7.5.0\R-3.2.2\library\RevoScaleR\rxLibs\x64\RegisterRExt” /install /instance:myserver\sql2016
Error :
Connecting to SQL server...
Error: 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: SQL Network Interfaces, error: 26 - Err
or Locating Server/Instance Specified)
Failed to complete the operation successfully.
Tried using Powershell too but same error. I am able to connect to same named instance through sqlcmd or directly fine but above command always fail with same error. I am admin on the box.
Already checked firewall rules and added all ports being used by new instance. No luck though.
Thanks for help.
NJ
For the instance name parameter, you need to specify only the SQL instance name "SQL2016" without the machine name.
Was able to connect to my SQL Server 2012 database using localhost with no problem storing it in the App_Data folder. My connection string was...
Data Source=(LocalDB)\v11.0;AttachDbFilename=|DataDirectory|\bookingsandpreorders.mdf;Integrated Security=True
However when I hosted my site on another/remote server I got the following error:
Server Error in '/' Application.
The system cannot find the file specified
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.ComponentModel.Win32Exception: The system cannot find the file specified
I thought it may be the connection string after looking at connection strings.com so I tried...
Server=.\SQLExpress;AttachDbFilename=|DataDirectory|\bookingsandpreorders.mdf;Database=bookingsandpreorders.mdf;
However now I just get another error...
Server Error in '/' Application.
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: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)
I've watched and read a seemingly endless amount about this error mainly involving configuring firewall, tcp port... all of which have made no difference.
I think I've made a rookie error as I've not got much experience with SQL Server Express. any suggestions?