I'm trying to connect to MySQL from my asp.net website on a hosted platform. My connection string looks fine, all the login details and server IP are correct but I am still getting an error on the page:
[Win32Exception (0x80004005): The network path was not found]
provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server
web.config connection string:
<connectionStrings>
<add name="Conn" connectionString="Server=xxxx;Database=xxxx;Uid=xxxx;Pwd=xxxx;" providerName="MySql.Data.MySqlClient"/>
</connectionStrings>
Can you guys give me any more info why this might be the case? Thanks!
Your server is not running or if running, your code cannot access this - firewall, etc. Or you didn't granted privileges for the IP of your app.
Looks like on this occasion there was a random Import that was making my site think it was using MSSQL rather than MySQL. Removed this and it's now working. Thanks for the help!
Related
I am trying to install dotnetnuke in my localhost but not able to installing dnn and below connection string used in webconfig file.
<add name="SiteSqlServer" connectionString="Server=(local);Database=d1;uid=;pwd=;" providerName="System.Data.SqlClient" />
Below error getting:
I am installing dnn in local host, please help to out this headache installation.
Integrated will attempted to use Windows Authentication for the database connection.
You either need to create a SQL authentication account and choose the "User Defined" option, or you need to add the user for your app pool to SQL to give it access to the D1 database.
I prefer to just use SQL Auth accounts, always ends up easier in my opinion.
I copied an entire ASP site from a remote server to my local machine. I can access the homepage, but once I try to login to the rest of the site, I receive 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)"
I set things up to allow for remote connections (enabling TCP/IP and Named Pipes), but is the problem because I'm trying to access a remote database? The connection string in Web.Config is:
<connectionStrings>
<add name="ISBEPI_DEV" connectionString="Data Source=ERI-DB-06\DEVELOPMENT;
Database=ISBEPI_DEV; Initial Catalog=ISBEPI_DEV;Persist Security Info=True;
User ID=Pi_usr; Password =J6$h3Qoz#9Yw;" providerName="System.Data.SqlClient"/>
</connectionStrings>
Any help would be very much appreciated! Please let me know if I can provide more info. Thanks!
Looks like you specified incorrect connection string or you are not allowed to connect to that SQL server. Have you tried to connect to that database from SQL Management Studio or Server Explorer in Visual Studio?
I am hosting a website on GoDaddy and getting database connectivity error while connecting to MySql database.
The error is coming as "Connection must be valid and open."
This error is coming while establishing the connection itself.
The language used is C# in MVC3.
Database server : MySql
Following is the connection string that I am using to connect to database.
<connectionStrings>
<add name="Application_Database" connectionString="Server=50.62.209.43;Protocol=TCP;Port=3306;Database=#####;Uid=#####;Pwd=######;" providerName="MySql.Data.MySqlClient" />
</connectionStrings>
Further, I would like to inform that the same connection string (provided above) is working on my local system and other servers also, but it is not working on GoDaddy hosting server.
Please help me out in this issue.
I am trying to create a web app using ASP.Net MVC3, Entity Framework and MySQL.
I have added the following code to my Web.Config file.
<connectionStrings>
<add name="ContactContext" connectionString="server=localhost;database=contacts;uid=root;pwd=password;" providerName="MySql.Data.MySqlClient"/>
</connectionStrings>
I also have created "Person" Model , "ContactContext" in the project "Contact_Me". When I try to create a "ContactController" including Person Model and Contact context, it gives me the following error
"Unable to retrieve metadata for "Connect_Me.Models.Persons". The
provider did not return a ProviderManifestToken string"
MYSQ & MVC3 SQL connection error \ ProviderManifestToken but I am using MySQL, this is the closest question to mine. But the answer didn't solve my problem.
Thanks in advance
I know this may be very basic for a couple of you guys, but this exception is also thrown in cases where EF is unable to locate a Connection String to use.
If you-re working in a multi-layered application, make sure the connection String is added to your client application, instead of the class library that contains you data access code.
Just my 2 cents.
I got this error when my sql server was actually down. So, please be sure that your sql server is up and running.
You can also get this error if you upgrade Nuget references in an EntityFramework project that uses MySql.Data.Entity (latest version is 6.10.X) and MySql.Data (latest version is 8.0.X). Those version numbers should match. You should use the MySql.Data.EntityFramework package with MySql.Data version 8.0 and after, and the MySql.Data.Entity package with versions 6.10 and before.
There are a lot more details in this blog post: https://davidsekar.com/asp-net/mysql-error-the-provider-did-not-return-a-providermanifesttoken
The problem was with the MySQL connector/Net.
I previously used MySQL connector/Net 6.3.5 and after I uninstalled it and installed MySQL connector/Net 6.5.4 the issue was fixed. You can find latest connectors at http://www.mysql.com/products/connector/
Sometimes this issue arises because of sslmode as well, For me the solution was to add sslmode=None to connection string
I had to make a small change to my connection string from
<add name="Connection" connectionString="Server=SOMEHOST;Database=DB;Uid=USR1;Pwd=PASS1;" providerName="MySql.Data.MySqlClient" />
to
<add name="Connection" connectionString="Server=SOMEHOST;Database=DB;Uid=USR1;Pwd=PASS1;sslmode=None;" providerName="MySql.Data.MySqlClient" />
May be the error is in your connection string. Have you tried to connect to your DB instance using the above log in. try changing the connection string
connectionString="Data Source=.;Initial Catalog=contacts;Integrated Security=True uid=root;pwd=password;" providerName="MySql.Data.MySqlClient"/>
use above if you are using sql server, else if you are using sql express use below one
connectionString="Data Source=.\SQLEXPRESS;Initial Catalog=contacts;Integrated Security=True uid=root;pwd=password;" providerName="MySql.Data.MySqlClient"/>
Even though this is answered, but I have experienced the same problem and my in case it was in the connection string; I had the part "Integrated Security" when I really shouldn't have used it; I was relying on the database authentication.
I removed the "Integrated Security=True" part and it worked perfectly :)
Restarting the computer worked for me.
While this message was showing, I did not find any differences between my computer [Windows 10] and the test server where the the application was deployed with the same configuration and was working correctly there and using the same database. It means the issue was probably not connected to the database running on the test server.
Worth mentioning is there were some Windows updates pending while restarting.
Setup
MVC 3 EF 4.1 Code First - Windows 7 Pro 64 Dev machine, Separate Win 7 Pro for host.
I started with a SQLCE4.0 database, and everything worked fine (database initializer created tables, populated, etc...).
Once I got everything working like I wanted, I scripted out my SqlCe DB, created a real SQL 2008 DB, opened the proper ports and enabled TCP connections.
Problem
IF I Change my connection string to point to my intranet server\instance name, with a user I created for this app specifically, it works perfectly running from my dev machine.
IF I publish the app to the server (the web server and sql server are the same), and I try to login to the website (aka access the db), then I get:
CREATE DATABASE permission denied in database 'master'.
I commented out the DBInitializer setup so nothing should be created upon a db hit. The tables are there already.
If I do Database.SetInitializer(null); then I get a different login error:
I don't remember exactly but it was something to the affect of LOGIN FAILED FOR IIS APPPOOL\ApplicationPoolIdentity
So I changed the Identity to NETWORK SERVICE and even tried LOCAL SERVICE, both giving the same login failed error.
I tried following this post who says add a SQL user named 'IIS APPPOOL\MyApplicationName'. SQL Wont let me do that as it has invalid characters ... go figure.
Why does it work perfectly over the network accessing the DB from my dev machine, but when I publish to THE SAME machine that hosts the sql and the site, I get permission denied or login failed errors? I've scoured the net and tried different things.
EDIT: Here are my connection strings:
<add name="AntripContext" connectionString="Data Source=|DataDirectory|AntripWeb.sdf" providerName="System.Data.SqlServerCe.4.0" />
<!--<add name="AntripSQL" connectionString="Data Source=.\sqlexpress;Initial Catalog=Antrip;User Id=myuser;Password=mypassword;" providerName="System.Data.SqlClient" />-->
<add name="AntripWebEntities" connectionString="metadata=res://*/DAL.AntripEntities.csdl|res://*/DAL.AntripEntities.ssdl|res://*/DAL.AntripEntities.msl;provider=System.Data.SqlServerCe.4.0;provider connection string="Data Source=|DataDirectory|\AntripWeb.sdf"" providerName="System.Data.EntityClient" />
<!--<add name="AntripWebEntities" connectionString="metadata=res://*/DAL.AntripEntities.csdl|res://*/DAL.AntripEntities.ssdl|res://*/DAL.AntripEntities.msl;provider=System.Data.SqlClient;provider connection string="Data Source=.\sqlexpress;Initial Catalog=Antrip;User Id=myuser;Password=mypassword;"" providerName="System.Data.EntityClient" />-->
Note: The commented out connection strings are the ones that use the sql 2008 database (that break my published app).
It sounds to me as if your connection string has Integrated Security=true so that you are connecting to SQL as the user you specify, rather than the SQL user you think you are using?
But beware, its still trying to create a database: you need to swap the IDatabaseInitializer - I guess it will look for a DB named the same as the entitys to be careful!