I run several applications that require SQL Server. I usually use SQL Server Express. After the latest Windows 10 update, my profile became corrupted, so reinstalled windows. I had been wanting to play around with SSRS, so I installed SQL Server 2016 Dev edition. After installing, I tried to connect from SSMS using hostname\instance and Windows authentication and I got error 87
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)
I tried removing the instance name and just connecting using the hostname, and the connection succeeded. With SQL Server Express I always needed the instance name. Why is it no longer necessary?
When you connect without specifying an instance name, the client connects to whichever instance is listening on port 1433. This is typically the default instance. A named instance usually listens on a different port so either the instance name or port number must be specified in the connection string.
Unless you specify otherwise, SQL Server Developer Edition will install as the default instance (if no default instance already exists). In contrast, Express installs as a named instance (name SQLEXPRESS unless you change it) but you can explicitly install as the default instance if desired.
Related
I have installed new setup of Microsoft SQL Server Management Studio using SQLManagementStudio_x86_ENU.exe on Windows 8. Installations was completed successfully.
But I am not able to login using default logins e.g
server name: (local), machine name, .
login: sa
password: Password123,blank password.
PFB the error.
TITLE: Connect to Server
Cannot connect to Dell.
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)
Go to
Start > SQL Server (xx) > Configuration Tools > SQL Server Configuration Manager
You should see a screen something like this:
When you select SQL Server Services on the left, you should see the running SQL Server services on the right. There should be at least one entry that looks like
Name State
------------------------------------
SQL Server (instancename) Running
If there is no such entry --> you just simply don't have SQL Server (the database engine) installed. To fix it : install the database engine.
If you have an entry, the (instancename) becomes important:
if it's MSSQLSERVER, you're dealing with a default, unnamed instance - you should be able to connect to it using ., (local) or your machine name
if it's something else - then that something else is your instance name, and you need to connect to it using .\instancename, (local)\instancename
Typically, SQL Server Express editions are installed (by default) as SQLEXPRESS instances.
I'm trying to connect from a local SQL Server Management Studio to a SQL Server hosted in a VM on Azure.
I followed all the instructions from
http://www.windowsazure.com/en-us/manage/windows/common-tasks/install-sql-server/ and created the necessary endpoints:
Somehow, I can't connect to the SQL Server, getting this error
Cannot connect to xxx.cloudapp.net.
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: 53)
The network path was not found
I already tried to temporary disable the windows firewall on the vm - without success. Any suggestions?
I had the same problem, this troubleshot helped me getting close to the solution:
Use SQL Server Management Studio to connect remotely to an SQL Server Express instance hosted on an Azure Virtual Machine
Summing up, what i did, i don't know if all these steps are necessary, so you should test after each one:
1) In SQL Server configuration manager enable Named Pipes in protocols
2) In the VM add a windows firewall inbound rule for sql server port (in my case the default 1433, in yours it seems to be 1435, make sure it's 1435 in sql server configuration)
3) Make Sure you are using a sql server authentication login (not a windows authentication) if you don't have one create it locally in the VM>MSSMS
4) Make Sure the SQL server is configured for mixed authentication (http://www.katieandemil.com/microsoft-sql-server-error-18456-login-failed-for-user)
5) Make sure sql server browser is running
Hope this helps :)
I am trying to connect to MS SQL Server 2008 R2 Express Edition through a Remote computer.
I am getting 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: Named
Pipes Provider, error: 40 - Could not open a connection to SQL Server)
On running SELECT CONVERT(char(20), SERVERPROPERTY('InstanceName')) instancenameting
I get NULL as the instance name. I have started SQL Browser service, checked TCP/IP are enabled.
What else can be done?
Use
Data Source=IP-0A6E3175;Network=DBMSSOCN;...
Or
Data Source=<<ip address>>;Network=DBMSSOCN;...
You'll also need to make sure that TCP/IP is enabled on the host using SQL Server Configuration Manager, that you aren't blocked by a firewall, etc.
And just for kicks, also please try:
Data Source=<<ip address>>\SQLEXPRESS;Network=DBMSSOCN;...
In addition to Aaron's suggestion to ensure your connection string uses tcp, run SQL Server Configuration manager and check the following:
do you have more than one instance?
tcp/ip enabled?
if the instance you are targeting is not the default instance, it will not be on port 1433 but rather some dynamic port. The Microsoft libraries figure out which port using SQL Server Browser on port 1434. Your firewall needs to allow that also (UDP).
if your Express instance is the only instance, you can change to use port 1433. Then you don't need SQL Server Browser.
I cannot connect to Sql server remotely from management studio , It is corrrect User name and password, but
how to enable remote connections to a sql server?
what is other chances?
Cannot connect to xxxx.xxxx.xxxx.xxxx
===================================
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)
thanks
Check out surface area configuration. It gives options to do so.
Edit: Enable the Named pipes conenction as well. I guess you are using Named pipe to connect. Also check if the SQL server browser service is running on the DB server.
Check the Authentication mode settings. It may be set to Windows Authentication only, it needs to be in Mixed Mode to accept SQL usernames & passwords.
Also check the Server network configuration and make sure named pipes or tcp/ip are enabled add that the client is using the appropriate protocol.
If everythings are correct, you may want to connect with a upper version, for example you are in SQL Server 2005 and want to connect to SQL Server 2008.
Note that you cannot connect to a upper version.(only same version or older version are granted)
I have SQL Server 2005 installed in my local machine. When I installed it, I was able to connect to the local server which is named "MNTCON016".
After restarting the machine, I found out that i was not able to connect to the local server "MNTCON016":
A network related or instance specified error occured while
establishing a connection to SQLServer. 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, Errorv 2)
After a lot of troubleshooting, I installed the same setup again and named the instance "MNTCON016\SQLEXPRESS", and then again it allowed me to connect properly.
But when I restart the machine, it gives me the same error as before. On the other hand, it allows me to connect to remote database servers on the network. The only problem is with my local server.
Try to open Start/Programs/Microsoft SQL Server 2005/Configuration Tools/SQL Server Configuration Manager.
Open node SQL Server Network Configuration and click Protocols for MSSQLSERVER. Verify which protocols are enabled. For example, I have named pipes disabled on my machine.
Also open SQL Native Client Configuration and click Client Protocols and check wchich protocols are enabled.
Regards
Piotr
Goto Run from start menu.
Type services.msc there. This gives you a list of all runnig services on your local machine.
Be sure that services for your SQL Server instance is running. These services should be set to automatic if you want them to start when windows starts.