I'm attempting to connect to a test Database on a Parallels VM on Mac using Azure Data Studio, but I'm getting the standard, generic connection error:
System.Data.SqlClient.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: TCP Provider, error: 40 - Could
not open a connection to SQL Server)
Steps I've taken so far to open the connection include:
Opening port 1433 through windows firewall
Ensuring remote connections are allowed on the SQL instance
Setting the TCP/IP Protocol to 5171 for IPAll
Running SQL Server and SQL Browser Instances
Adding a rule to windows firewall for sqlservr.exe to allow all connections
Enabling the SA account and adding a password (password is correct - I've double checked in SSMS on the VM)
I'm able to connect from the windows VM but not the Mac.
My connection string is below (IP is correct, again I've double checked):
Is there a step I've missed or some extra config that I need to do on the VM itself maybe? Or maybe the connection string isn't quite right? I've also tried using the Machine Alias to connect to the instance (SQLEXPRESS) - but still no joy. Anyone know what the problem might be because it's driving me crazy and I can see that other devs have made it work, so I know it's possible. My version of Parallels is Desktop 15, I don't know if that makes a difference or not?
Ok so turns out I needed to open the IPAll port I had set for the TCP/IP Config which in my case was 5171 as well as adding a rule to allow SQL Server Browser to connect to the internet.
For those of whom the above method doesn't work, try Bridged Network instead of Shared Networking in the Network settings and replace the old IP address with the new one.
I am able to connect to Microsoft SQL Server (in Parallels Desktop 16) using Visual Studio Code in macOS Big Sur.
Related
I am having an issue connecting to my SQL Server Database remotely from another computer.
I am trying to connect to the database using a VB.Net application that is suppose to be able to interact with it. I'd say my connection string may be the issue, but I have no problem connecting on the machine the database is on using the connection string.
This is what the connection string looks like though:
"Data Source=[IP_ADDRESS],[PORT];Network Library=DBMSSOCN;Initial Catalog=SQL_Database;Persist Security Info=True;User ID=[USER];Password=[PASS]"
The error I am getting right now is:
Database 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: TCP Provider. error: 0 - The wait operation timed out.).
This is what I have done so far to try to get this to work:
I have made sure that the files being run are on not a network/shared drive.
I've added an exception for TCP Port 1433 and UDP Port 1434 as Incoming Rules to the Firewall.
I've tried disabling the firewall.
I have gone into SQL Server Configuration Manager to ensured that the TCP settings are setup properly.
One thing I am not sure about, is that in the Configuration Manager, I have both the SQL Server and SQL Server Browser running, but the SQL Server Agent is unable to start. Would this cause me my problem?
If not, what else could be my issue? I need to be able to access this database remotely, but the connection string seems to only work locally.
So the issue was literally my company's installed network Firewall. Apparently when I asked if the firewall had been put down for me to test this, "Yes" really meant "No". Once I got the firewall temporarily disabled I was able to connect to everything perfectly fine.
I am trying to connect to an MSSQL server from a C# ASP.Net core application running in OSX. The MSSQL is on a separate machine which firewall is configured to let connections via TCP to port 1433 and via UDP to port 1434.
The connection string I am using is:
Server=IP\SQLEXPRESS;Database=DB_NAME;user id=****;password=*****
What is very confusing at this point is that the very same connection string works flawlessly from Windows and both Visual Studio and Visual Studio Code. The moment I reboot in my OSX, then VS Code opens the project but raises the dreaded
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: TCP Provider,
error: 40 - Could not open a connection to SQL Server)
exception. I have no idea what to do, as this code should work. What does the OSX implementation of the SQL Server connector do that is so different?
As Giuseppe said, you need to use IP,port. Named instances can run on various ports and Windows clients (i.e. SQL Management Studio) detects port by asking SQL Browser service.
In you case, you should open SQL Configuration Manager, Go to SQL Server Network Configution -> Protocols for SQLExpress (or whatever is name of the instance) -> TCP/IP (right click) -> Properties -> Ip Adresses tab, scroll to bottom and see (and/or) set the current port.
Apparently the *nix implementation of the UseSQLServer method does not support instance names. Therefore IP,port is the way to go.
I have two machines (a laptop and a desktop) connected to the same network throgh the same router and an SQL Server with 2 instances: ODD and EVEN, both instances have the same configuration (as far as I can see), including sa account settings.
From my desktop I can connect to both instances, but from laptop I can connect only to the EVEN instance, when I try to connect to ODD instance I get the following error:
Microsoft Visual Studio
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)
OK
I know that:
I have correct password, because I can connect to EVEN
I have correct firewall settings, because I can connect to EVEN and both instances use the same TCP/IP port 1433
I have properly configures server, because I can connect to the both instances from desktop.
How should I troubleshoot this issue? Is there any more detailed information about what went wrong? Why does Visual Studio uses named pipes and does not try TCP/IP for example?
Check Sql Server Configuration manager on your client and server to see if TCP/IP protocol is enable or not. you can even disable Named Pipes protocol there and see how it will effect on VS error message.
you can even check server setting by trying below command from command shell.
telnet server-ip 1433
I'm so frustrated I'm going to give all of my rep points if someone can help me with this.
Scenario:
There was a domain name change and the development server had a SQL Server Express working. Since I have forgotten the SA password and was not able to login with any account from the new domain I decided to uninstall and re-install a new SQL Server 2008 R2 Express.
I installed SQL Server Express from WPI with management studio. After the installation I can open the local server with Management Studio, but cannot open from a remote Management studio.
What I did to try to figure out WTH is going on:
I made sure Remote connection was checked on the SQL Options "Connections"
I enable TCP/IP and Named Pipe on SQL Server Configuration for my instance SQLEXPRESS
I ensure that the port was OK on Properties of TCP/IP of the SQL Server Configuration, there were no value at first, so I manual entered 1433, stop, start the server, try to connect.
a) I even try playing with the Active / Enable value, and with a stop, start, re-try in between every any changes.
Disable the Windows Server 2008 firewall, even added a manual rules for 1433.
Make sure the instance name was good on hkey_local..\software\ms\sql\... and the one I see on the local Management Studio, it's SQLEXPRESS
I can ping the server with its name or ip address, I even tried to connect with the IP address as well.
I'm just trying to connect from another server with another Management Studio, and here is the error I get:
Cannot connect to DEVSERVER\SQLEXPRESS.
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: 26 - Error Locating Server/Instance
Specified) (Microsoft SQL Server, Error: -1)
The server is a Windows Server 2008 x64
What a time waster
TIA for any tips, can't believe what's happening.
UPDATE:
I telnet from the remote server on port 80 just to make sure it's not a network problem, and I got HTML result, since firewall is disabled, and tcp/ip is enabled, SQL Browser started, Remote connection is activated it's hard to put the finger on what's not OK.
We had the same problem, finally figured out that a dynamic port entry has to be given along with the SQLExpress login .. ie 192.168.1.25\SQLEXPRESS,45490... then it allowed the login to happen.
We had installed a new SQLEXPRESS 2008 R2 (Windows 7 Professional Edition) in a new machine & was trying to connect to this DB from another machine from the mgmt studio and it was not connecting, nor was it connecting from any of the client machines.
We tried to check the SQLEXPRESS Browser / TCPIP was enabled and spent couple of hrs before we we figured out that the Dynamic port was causing this issue.
You can find this information, Open the SQLEXPRESS Configuration Manager, Select SQL Server Network Configuration on the left menu![Configuration Manager][1]
Select Protocol for SQLEXPRESS
You will find the TCPIP Enabled on the right side, click on the TCPIP and select properties
go to IPALL .. you will find the dynamic port info there.
btw, we tried installation on two HP PCs had the same issue & was solved with the dynamic port, while when we tried the installation on the ACer PC - did not get this dynamic port issue - so not really sure if it had anything to do with the OEM OS setup !?
However, the above solved our situation.
Last time this has happened to me, it was because I forgot about the SQL Server Browser service.
Did you try these steps: http://blogs.msdn.com/b/sqlexpress/archive/2005/05/05/415084.aspx ?
SQLEXPRESS is named instance, so it doesnt listen on 1433 port (it's for default instance). Try this:
Disable firewall
Start SQL Browser
Try to connect from remote machine
My problem solved by using the server configuration manager to disable the dynamic port (blank = disable), and fix the port to 1433
I'm running SQL Server 2008 Express on Windows XP on a VirtualPC instance inside a Windows XP host. I want to be able to connect to databases on the guest instance using SSMS on the host. When I go to connect from SSMS on the host, and browse for servers, I see the instance of SQL Server on the guest. Yet when I try to connect, using a SQL authentication login, I get the following connection 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: 28 - Server doesn't support requested protocol) (Microsoft SQL Server, Error: -1)
I have:
* tried connecting with both Name Pipes and TCP/IP
* ensured that the SQL Browser service is up
* ensured that the firewall on the guest is open
* the server is configured to allow remote connections (according to the database engine properties within SSMS on the guest)
What am I missing?
EDIT: I figured this out. My resolution is below.
SELF-ACCEPTED ANSWER
Thanks for the ideas. After much fiddling I got things working. It turned out that I had not gone into the Sql Server Configuration Manager and enabled TCP/IP and Named Pipes as network protocols. So even though SSMS said remote connections were enabled, there was no protocol to allow for them other than shared memory. After I did this I restarted the SQL Server service, but things still didn't seem to work properly. Yet once I had rebooted both the guest and host, everything was working as expected.
How are your IP settings? Are you sharing the same IP address between the two machines? If so, then perhaps when your clients attempt to connect to 10.1.1.10, it is hitting the IP of the machine hosting the VPC instance, and that machine is not running the SQL Server instance. If possible, have VPC get its own IP and try that.
Mostly double check what you have already said,
turn off the guest firewall to make sure it isn't that.
Make sure your virtual machine networking is set to bridged and not NAT.
Try connecting to the IP address of the guest instead of its name.
Make sure the remote connections are allowed by SQL server and that both client and server are using tcp/ip (or named pipes if you prefer).
I don't know if enabling remote connections requires a restart of SQL server.
Try using SQL authentication to eliminate an authentication issue. Are you running on a domain?
To add some steps that are not explicitly called out above, what worked in my experience was to set up the Virtual PC's Networking to my physical network adapter.
Then disabled Windows Firewall for the Public Profile.
Hopefully could actually lock that down to port 1433.
Also, on the guest OS, if SQL Server is installed with only Windows Auth, you later add SQL auth, note that by default 'sa' is disabled for login access. Either 'enable' Login for 'sa' or (better idea) create Logins with appropriate permissions as needed.