SQL Security :: Cannot Connect To Local Instance
Sep 25, 2015
I have verified that the following services ARE running.SQL Server (SQLEXPRESS)SQL Server Browser SQL Server VSS Writer.This one however will not start ... For some reason it starts then automatically turns off.SQL Server Agent (SQLEXPRESS).When I try to connect using my <machine name>/instance and Windows Authentication I get the 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: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) (Microsoft SQL Server)".The connection specified in the "Connect to Server" box was working perfectly fine before I upgraded. I thought it might have been my Norton 360 Premier but I uninstalled it.I AM having issues with the adapter frequently dropping the internet connection but I just disconnect and reconnect and that resolves itself.The other technique I tried was to replace the server name with the IP address ... <192.168.0.22>/Instance ... This actually seemed to find the SQL Server but rejected the Windows Authentication ...
"Login failed. The login is from an untrusted domain and cannot be used with Windows authentication." I have several databases on here and would hate to have to reinstall SQL Server and manually hook them back up.
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Jul 22, 2015
I've two instances(Default, Named[dynamicsFINANCE]) running on SQL server 2014. However, when I try to connect to named instance say (dynamicsFINANCE) 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 to the named instance [dynamicsFINANCE] 1450. I also setup the firewall rule to allow access to Port 1450.
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Jan 29, 2008
I have just recently installed MS SQL Server 2005 Developer edition. I have installed SP2.
Today when I try to connect via Management Studio, I get the following error:
An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: TCP Provider, error: 0 - A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.) (.Net SqlClient Data Provider)
I installed it as a default instance.
I recently added a login with dbo privileges. I have tried logging in with that sql account and also with windows authentication to no avail.
Thank you for any help.
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Feb 19, 2007
Hello,
I am using the following connection string to connect to SQL Server 2005 Express Edition installed on my local PC.
string sqlstr = "Server=(local);Database=MyDB;User ID=sa;Password=sa;Trusted_Connection=False";
And it gives me the following error. The string works fine in computer with SQL Server 2000 instance but fails with 2005. The string also fails for "Server = localhost".
However the string works very fine if I use the name of Server 2005 i.e ./SQLExpress
===================================
Cannot connect to (local).
===================================
An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) (.Net SqlClient Data Provider)
------------------------------
Error Number: 2
Severity: 20
State: 0
------------------------------
Now the main problem is that, of course I could use a named instance, but since I am embedding the Connection String in a dll file so that any user can use it to connect it to the local instance of the SQL Server 2005 installed in his/her computer, I need to use "server = localhost". Doesn't SQL 2005 support this. If yes, where could i find option to enable it?
I have enabled every option available in surface area configuration for SQL Server 2005, but nothing seems to help out. I even use local as well as remote connections using both TCP/IP and named pipes.
Can nyone help me out?
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Feb 6, 2007
Just when I think I have this stuff figured out, it bites me back everytime.
I'm
trying to deploy an mdf out to a different machine, and attached to it with local user instance. I connect without problem from my development
machine with a local user instance, which also has Express Manager resident,
and I can connect to a server instance without problem.
What I can't do is
copy the .mdf database over to another workstation, which has Sql Native
Client installed, and connect to the database using a local user
instance! I can connect to a server instance without problem from this
other workstation. Here's my connect string for local user instance
that works fine from my dev machine:
Provider=SQLNCLI.1;Persist
Security Info=False;Integrated Security=SSPI;Data
Source=.sqlexpress;AttachDBFileName=<full path_name and mdf
filename>;User Instance=true;
The error I get upon trying to connect with other stations is:
Error -2147467259
Database not found or cound not connect to database
I've
tried this every way I know how. I've copied the database from my dev
machine both with and without having detached the database from the
local instance. I've tried detaching from a server instance and copying
the file over. Nothing works, and I've done this before! What gives with this thing?
Rick
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May 31, 2007
Hi Remus,
I am experiencing the same problem, and I can't get the easy fix to work. I drop and create the DB's in between tests, so it is not related to having an old certificate in the DB, as in the case of Tilfried.
The situation is as follows:
DB1 owned by login1, has a user for login2; this DB is for the initiator
DB2 owned by login2, has a user for login1; this DB hosts the target
Both DB's have TRUSTWORTHY flag set to ON
Error in sys.transmission_queue: 'Error 916, State 3: The server principal "Login1" is not able to access the database "DB2" under the current security context.
Going on a limp, I decide to add a remote service binding in DB1, binding the user for Login2 to the target service, even though BOL explicitly states that this is only required for cross-server communications. This does change the situation - I still get an error, but a new message is sys.transmission_queue: "Dialog security is unavailable for this covnersation because there is no certificate bound to the database principal (Id: 5). Either create a certificate for the principal, or specify ENCRYPTION = OFF when beginning the conversation." I already know that the first option works, but I wanted to get the simple solution running. As for the second option, I doublechecked and the initiating procedure DOES already specify ENCRYPTION = OFF in the BEGIN DIALOG CONVERSATION command. My theory is that the remote service binding somehow forces SB to use encryption, but (a) that is not stated in the error message, and (b) if so, then how to get the messages sent over to the target service without using the binding?
==> EDIT: Just saw that you confirmed this theory in your last reply to Tlifried. So I am indeed back to having to find out how to get this to work without remote service binding - it should be possible, but how???
BTW, SELECT @@VERSION shows that I'm on build 3054, in case it matters.
Between all the errors in BOL and less than helpfull error messages produced by SB, I feel like I'm slowly losing my sanity. Please help!
Best regards,
Hugo Kornelis
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Jul 22, 2015
I've two instances(Default, Named[dynamicsFINANCE]) 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 to the named instance [dynamicsFINANCE] 1450. I also setup the firewall rule to allow access to Port 1450.
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Jan 2, 2008
I installed SQL 2005 Developer addition on my Vista laptop. When I open Management Studio to connect to the local instance of the DB, I get the error below. Why can't I access? Is there something with Vista that is prohibiting?
Thanks
TITLE: Microsoft SQL Server Management Studio
------------------------------
Login failed for user 'xxxx'. (Microsoft SQL Server, Error: 18456)
For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&EvtSrc=MSSQLServer&EvtID=18456&LinkId=20476
------------------------------
BUTTONS:
OK
------------------------------
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Aug 8, 2007
Hello,
I just installed SQL Server 2005 Enterprise edition from my company's DVD. It was installed with the setting of using both Integrated windows authenitication as well as basic named authenication. I installed all the options too: Database Engine, Analysis Services, Reporting Services, SQL Server compact edition, and Integration Services. When I look at services there are: SQL Server Integration Services, SQL Server Analysis Services, SQL Server Reporting Services, and SQL Server Browser. All of which are running. Something that took me offguard was the installation did not ask me to provide an SA password. Other than that, the install looked like it went good.
I was able to connect to the local instance of the SQL Server 2005 using the SQL Server Management Studio. I could connect with SA, or connect with Integrated Windows Authenication. Whoohoo. Off and running! As a matter of fact, for the SA account I could use any password and it would still log me in.
First thing I did was I went in to the copy wizard to attempt to copy a database from a server on our network to my local box. First it asked me for the remote server. Then when I specified my local instance in the wizard, the wizard complained that my local instance was NOT SQL Server 2005. Doh! This I didn't understand. I figured maybe I need to check for MS updates. Sure enough, I found that ther was a SP2 and then a hot-fix for that SP2. I applied both. Now I cannot connect from SQL Server Management studio to my local instance of SQL Server 2005 database server. I get the following error:
"An error occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 2)"
However, I went in to see what other services I could connect to, and here's the results:
Analysis Services : OK!
Reporting Services (Windows Auth/Basic/Forms) : NG "The reporting Services Instance could not be found (Microsoft.SqlServer.Management.UI.RSClient)"
SQL Server Compact Edition : NG "The database cannot be found. Check the path to the database. [ File Name = CCG092 ] (SQL Server Compact Edition ADO.NET Data Provider)
Integration Services : OK!
I can connect to other SQL Server databases on our network. However, just not my local one. No one on the network can connect to me either.
I even turned off my windows firewall and still no luck connecting to my own.
So something really went wrong when I applied SP2, however, admittedly from the error message when I tried to use the copy wizard, something was probably already wrong.
Any ideas?
Thanks!
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Apr 7, 2007
Can't connect to local server instance MSSQLSERVER in SQL Server Management Studio (SQL2005 sp2/Vista).
SQL Server Configuration Manager reports SQL Server2005 services: SQL Server (MSSQLSERVER) Running. This would indicate the name of the SQL server is "MSSQLSERVER" correct? I chose "default" instance during the install and that is the name it gave itself.
I tried connecting to the server using the following for the Server Name: MSSQLSERVER and .MSSQLSERVER neither works.
The only thing that works for my installation is just plain "." (no quotes) and nothing else. Can this be correct because I can't find any reference to this. Thanks.
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Jun 7, 2006
I am facing a problem in connecting to the local database with server name as (local).
I have installed SQL Server 2005 in my machine. When I try to connect to the SQL server with the server name as SUNILKUMAR I am able to connect but when I try to connect to the same server with the server name as (local) I am not able to connect. SUNILKUMAR is my machine name and SQL server is running locally.
if anyone can help me what is the problem in this case it is highly appriciated.
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Mar 20, 2014
I have a 3 node cluster on which I have installed SSAS as it's own insntance. I have created this as a named instance and can connect to it by serverinstance if I'm on the server itself. However from my desktop I get the error saying instance was not found on server name.
I have defined an alternate port and setup firewall rules and can connect via server:port but not serverinstance. Prior to making this change SSAS was running on default port of 2383 and I could connect just by servername.
I have read many articles for previous versions saying that clustered SSAS will always use 2383 and that you must connect just using servername. However and this is were it gets strange. I have a 2 node UAT cluster with SSAS setup exactly the same way I've described above and I can connect from my desktop as serverinstance.
Should I be able to connect as serverinstances for a named clustered instance in 2012 ?
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Dec 7, 2006
This is my first time to deploy an asp.net2 web site. Everything is working fine on my local computer but when i published the web site on a remote computer i get the error "Failed to generate a user instance of SQL Server due to failure in retrieving the user's local application data path. Please make sure the user has a local user profile on the computer. The connection will be closed" (only in pages that try to access the database)
Help pleaseee
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Oct 10, 2002
I have a SQL2K server installed , and it is given an instance name (like BoxSQLInstance). I have a connect string looking for "local" server, is it possible to make this instance name as the default local server ?
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Sep 30, 2015
I am working on an existing project that uses sql server 2014 local db. I've installed it (there was no option to set an instance id). Using sql server 20014 management studio and setting the server name to (localdb) results in this error
Network related or instance specific error occurred while establishing a connection to sql server.......
So obviously its not there, how can i test this? There's no service I can see. The installation procedure completed without any errors, what could be going on here ?
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Oct 20, 2006
(New to SQL Server Installs)I installed SQL Server 2005 Developer Edition on a WinXP-SP2workstation and can see some enterprise databases on the network justfine.My problem is I cannot register a local database on the local drive fortesting/education purposes.(I accepted all of the defaults on the install and thought all waswell.)There are a couple of small databases that are in development in ourgroup and I need to work on when offline from the network.Short of uninstalling the whole product and doing it over, what stepscan I take to remedy this so I will be able to work with DB's locally?Thanks.
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Feb 17, 2006
I have two databases (A and B )on the same SQL Server instance. Both have SSB enabled and running fine within themselves. All athorizations are at present set to dbo.
Recently I had a requirement to start a dialog and send a message from within data base A to a queue via a service that is in database B.
I tried coding the SSB instance in the BEGIN DIALOG then I set up a route and tried that. On both occoasions I got the following on sys.transmission_queue
"An exception occurred while enqueueing a message in the target queue. Error: 916, State: 3. The server principal "sa" is not able to access the database "B" under the current security context."
Is this sometjhing to do with security lock downs in 2005?
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Sep 2, 2006
Hi, I've installed SQL Server 2005 Express Edition, SQL Server Management Studio Express using Windows Authentification and IIS 5. The problem occurs when I try to access the default address of my local computer to test my installation. I've tried with both http://localhost and http://127.0.0.1. The system requires a password despite I don't use password for my Windows Authentification. Does IIS always demands a password regardless my settings for Windows Authentification or?
Best regards
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Jun 19, 2007
We are seeing some very strange behavior on installation for our application when it is trying to enumerate the available SQL Server instances. On some machines (not yet determined why) the SQL Browser service is apparently able to locate remote instances but not the local instance. This does not seem to map to any firewall or TCP/IP settings which we can determine. We have gone to the extent of uninstalling all associated firewall and antivirus products, and the problem persists.
For the moment, we are working around this problem by interrogating the registry for the instances installed locally, but this seems unsatisfactory in the long run. Is there any possibility that other instances of SQL Server Express or MSDE have somehow disabled our ability to see local instances? I would really like to find a better solution to this problem.
Andrew Raymond, MCAD.NET
Senior Developer
Mitchell 1
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Sep 18, 2007
Greetings friends,
Not sure if this is the right place for my question but here goes anyway.
I have an instance of SQL Server 2005 installed on my DEV PC. A colleague of mine wants to access my server from his machine which connected to the same network.
I logged on to SSMS and added him as a new login.
Will he be able to connect to it now or do I have to do more than just that?
Your help would be appreciated.
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Feb 12, 2007
I want to add a data source to a C# project that comes from a local SQLServer instance. But when I attempt to do a new connection, it only allows me to specify a file. That is, the only choices I have to select a data source type are "Access DB file" and "SQL Server DB file". I know that with the non-express VS edition there are more choices available. But reviewing limitations of express editions on the web, I find a frequent mention that one cannot access remote data, only a locally installed data source. But is not a SQL Server instance on my local machine a local data source?
This is an issue because if I proceed with connecting as a file, then VC#Express complains the file is in use. If I first go into SqlServer Expresss and detach the database there, then I can connect to it in VC#Express, but that is rather cumbersome!
So to put it another way, can I use this connection string...
Data Source=.SQLEXPRESS;Initial Catalog=testDB;Integrated Security=True
instead of this one?
Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory| estDB.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True
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Mar 5, 2001
Hello,
In NT MS suggests putting global groups into local groups and then assigning object permissions to those local groups in NTFS. I was wondering if this pattern should be followed in SQL server when assigning permissions to integrated login accounts. Is it better to use global groups or local groups?
Thanks
JJ
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Mar 19, 2007
We have a weird issue with one of our computers.
We have a SQL 2005 server that is running our website and is accessed by our staff to run some applications (VB and Access 2003). The SQL 2005 server is at an off-site datacenter, so all access is via VPN.
We have one individual who is recieves the The Local Security Authority Cannot Be Contacted error whenever we try to create an ODBC connection to the SQL server. If the user is in our office, his computer connects fine, when he connects via an IPSEC VPN (we have tried various connections DSL, Cable and EVDO as well as Starbucks) he gets the same error. The error is sporadic, though recently it appears 80-90 percent of the time.
More info
When he is connected to the VPN, he can ping the SQL and exchange servers, as well as any of our other servers.
The issue started when he got a new computer. The computer is less than a year old, was mine previously. Hard drive was wiped and reloaded with XP Pro, 2.6 GHz, 2 GB RAM, 100GB hard drive with 70% free space.
When he connects to the VPN, he loses access to the exchange server, when he is not connected to the VPN, he accesses exchange via Outlook 2003 via RPC over HTTPS without an issue. When he disconects from the VPN, his connection to exchange is returned.
Any help or pointing in the right direction would be greatly appreciated.
Thanks
Wayne
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Jan 14, 2007
This is regarding general protection of a database hosted on a network. I am developing a database application for my college library using VB.NET, that will reside on a network.
For some reasons, I did not want to hardcode the Database location in the application. Instead, when a user logs in, he can choose the database location using a folder browser control, if the location has changed.
Now, I realize that for this, I have to put the database in a shared folder, which makes it quite vulnerable. Having pondered over the problem for sometime, a solution that comes to my mind is to place a Text file in the same shared folder that always contains the correct path of the database. When a user chooses that folder, I will read the actual path of the database from the text file, and move the database to a non-shared folder.
I haven't yet implemented this approach, but felt it better to consult someone before. So, would this approach work, and is it a good idea.
For information purposes, I consider it important to mention that the database is in MS Access. I know this is not a place for discussing it, but this is a general security concern. So, I thought
people would not mind answering it....
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Mar 17, 2008
I have been reading through the article pointed to by the link below on msdn and its documented that one functional limitation of user instances is "Only local connections are allowed." I didn't understand the technical details(meaning) of that limitation and hopefully some one might explain it to me so that i can understand it better.
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Sep 15, 2005
Hello, PLEASE Help me.I have just installed the Quick Starts on my local machine, and it mentions that you will need a new instance of SQL called (local)/NetSDK.I already have the MS Personal Edition and the tutorials say to download the MS Desktop Engine. So what do i need to do in order to get teh Quick Start samples to work locally???Can i not just use my own instance and use the Grocer and other Databases there???Please Help
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Feb 28, 2007
Hello all,
I'm a bit new to SQL Server and T-SQL (my background is in DB2), so hoping you can help me with this. I'm writing a T-SQL script that's hopefully going to scan a bunch of SQL server instances and record the results. We've got a mix of SQL2K and SQL2K5 instances, and for part of my script I only want to run something if the remote instance is SQL2K.
I'd tested this on my local PC with several instances created and it worked fine. When I try and run it for instances located on other servers it barfs :eek: . From what I've found from looking up the error message it looks like I've got myself a loopback -- but I don't know how to get around it - any ideas please?
DECLARE @tempdata TABLE (scratch sql_variant)
DECLARE @debug tinyint
DECLARE @server sysname
DECLARE @version varchar(20)
SET @debug=1
SET @server='SQLSERVER_INSTANCE'
INSERT INTO @tempdata (scratch) EXEC ('[' + @server + '].master.dbo.sp_executesql N''SELECT SERVERPROPERTY(''''ProductVersion'''')''')
SELECT @version = convert(varchar(100),scratch) from @tempdata
DELETE FROM @tempdata
IF @debug>0 BEGIN PRINT @server + ' is running SQL Server version: ' + @VERSION END
IF charindex('8.00',@version) > 0 BEGIN
PRINT 'SQL2K-only code goes here'
END
The error I get is:
OLE DB provider "SQLNCLI" for linked server "SQLSERVER_INSTANCE" returned message "The transaction manager has disabled its support for remote/network transactions.".
Msg 7391, Level 16, State 2, Line 1
The operation could not be performed because OLE DB provider "SQLNCLI" for linked server "SQLSERVER_INSTANCE" was unable to begin a distributed transaction.
I get this error running from a SQL2K5 instance against both SQL2K or SQL2K5
TIA, moff.
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Aug 4, 2014
First time I've tried doing this - I have SQL Server 2012 installed on my local machine with an instance running (which was set up under an administrator account, not mine, which has no admin rights), and I'm trying to create a linked table from Access (also on the local machine) to a table on the server.
I tried creating a DSN using Windows Authentication, using the server name which is the same as my computer name, and got the error "Error 18452, Login failed. The login is from an untrusted domain and cannot be used with Windows authentication".
I then created a SQL authentication user ID and password, and tried the same thing using that instead, and got "Login failed for user <myusername>"
Is there some particular setting on the local instance I need to change to allow this kind of connection, or do I need to use something other than the server name to connect, such as an IP address? Remember that I have no admin access on this machine so any solution would have to avoid requiring that.
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Mar 15, 2008
I am using SMO EnumAvailableSqlServer to make a list of available SQL servers in local network. I have tested it in two different local networks. In the first all works fine, but in the second I have noticed that when disconnected from the network the call fails to even detect the locally installed sql servers.
I know that I can scan registry to get installed local servers, but I want to know what could be making problem.
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Aug 15, 2007
We would like to use the SQL Server 2005 Express at our customers.
But now we have to meet the local security settings of the PC.
What is happening with the database users password (e.g. sa) when the "Maximum password age" in the "local security settings" for the password policy is to >0 (e.g. 30 days)?
Because this cause a frequently change of the passwords at the customers!!!!!!
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Oct 28, 2015
Can you use a SQL service account (domain account) on two different SQL instances?
Can you set the SPN for both clusters instances with the same account?
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Sep 11, 2007
Hey Guys,
I have a SQL connection string question. In my web.config I don't know what to put for the server. I have SQL Server 2005 installed locally.
<connectionStrings><add name="database" providerName="System.Data.SqlClient" connectionString= "server=whatgoeshere?;database=test;uid=sa;pwd=password" /></connectionStrings>
I'm using VS 2005.
Thanks in advance.
-Marc
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Nov 7, 2007
hi..
i am trying to run my asp project using my iis in winxp and installed a sql express 2005 and wheni try to connect using http://localhost/myproject i encounter this error
Microsoft OLE DB Provider for SQL Server (0x80004005)
[DBNETLIB][ConnectionOpen (Connect()).]SQL Server does not exist or access denied.
am i missing some permission settings in sql express?
thanks
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