I have two instances:
Default
Named[dynamics\FINANCE]
running on SQL Server 2014. However, when I try to connect to named instance say (dynamics\FINANCE) using SQL authentication from local SSMS, I get below error message:
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) (Microsoft SQL Server, Error: -1)
I assigned a static port number 1450 to the named instance [dynamics\FINANCE]. I also setup the firewall rule to allow access to Port 1450.
What am I missing here?
Related
I cannot connect to any remote SQL Server instances from my system. I used to connect them from SQL Server Management Studio. Moreover, I can still connect to the same SQL Servers remotely from another systems (my colleagues' system).
I am getting following 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: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) (.Net SqlClient Data Provider)
Error Number: 53
Severity: 20
State: 0
I have checked:
Named pipes/TCP is enabled.
Remote connections are allowed.
Windows Firewall is off.
Enabled everything in SQL Server Configuration Manager.
Also, I have tried everything mentioned in this post-
How do I fix the error 'Named Pipes Provider, error 40 - Could not open a connection to' SQL Server'?
But still could not solve my problem. Please suggest any method which allows me to fix this error and connect to the remote servers again.
instead of check whether that server system is working or not, because sometimes if the server system is not working means we are unable to connect to that system
My instance name is MSSQLSERVER and while I connect to Management Studio, I use .\MSSQLSERVER to login. I have gone through all the threads here but everyone is suggesting to enable tcp, pipes, shared memory which I have done and restarted the server too. Also I am using .\instance name as suggested. But still can't connect, and I get the following error
TITLE: Connect to Server
Cannot connect to .\MSSQLSERVER.
ADDITIONAL INFORMATION:
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: 25 - Connection string is not valid) (Microsoft SQL Server, Error: 87)
It would be great if someone could help me with this
MSSQLSERVER is the SQL Server service name for the default instance which is the instance without any instance name - so to connect to this (unnamed) default instance, just use
.
(local)
localhost
your-machine-name
without any "instance" name (since there is NO instance name)
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.
I'm connecting my SQL Server 2012. But I get below error message, connection failed.
I'm not sure about my server name (I forgot).
Is there anyway to get the database server name, Windows authentication username and password without logging to SQL Server?
Cannot connect to MY-SERVER.
ADDITIONAL INFORMATION:
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) (Microsoft SQL Server, Error: 2)
use ., localhost or 127.0.0.1 for local server with default instance.
I have tried any kind of name for Server Name, including ".\SQLEXPRESS", "localhost\SQLEXPRESS", "My PC Name", "MyPCName\SQLEXPRESS" but I still get the same error:
Cannot connect to .\SQLEXPRESS.
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) (Microsoft SQL Server, Error: -1)
For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&EvtSrc=MSSQLServer&EvtID=-1&LinkId=20476