Error: dotnet mysql connection Access denied for user 'root'#'***.***.***.***'
I got this error when I use MySqlConnection to connect to a mysql server. I put in the correct user name and password, and I can use phpmyadmin to log in the server with the username and password.
Also, there is a line with root and % in the privileges page. Is there anything else that I don't know that could make this error?
Better if you show your code.
Try to craete a new user like:
CREATE USER 'test_user'#'localhost' IDENTIFIED BY 'some_pass';
Then grant all PRIVILEGES ON shop:
GRANT ALL PRIVILEGES ON shop.* TO 'test_user'#'localhost';
Try to connect via this user. May be it is due to PRIVILEGES issue.
Related
After deploying my C# win app in client computer, the following error occurs:
The underlying provider failed on open.system.data.sqlclient.sqlexception
login failed for user. cannot open database "EmdadKhordo" Requested by the login
This is my connection string:
metadata=res://*/Models.EmdadKhodroDB.csdl|res://*/Models.EmdadKhodroDB.ssdl|res://*/Models.EmdadKhodroDB.msl;provider=System.Data.SqlClient;provider connection string="data source=.;initial catalog=EmdadKhodroDB;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework"
I use Entity Framework to access a SQL Server database.
Based on the cannot access database error message, authentication succeeded to the SQL instance but the specified database cannot be accessed. This may be because the EmdadKhodroDB database does not exist, is not online, or (most likely) inaccessible under the current security context. Make sure the account you are using has access to the database and the needed object permissions.
The DCL below will add the user to the database. You will also need to grant object level permissions directly to the user or a role of which the user belongs.
USE EmdadKhodroDB;
CREATE USER [YourDomain\YourAccount];
You can also manage your Windows user rights using SQL Management Studio. Just follow instructions from here for creating a new login and also configure mappings to each database you need access to.
Basically you need to make sure that your login is properly defined (Security -> Logins) and that it has the appropriate rights on EmdadKhordo database (read, write etc.). The recommendation is to allow the minimum required rights (e.g. do not allow to alter tables, if only SELECT, INSERT, UPDATE, DELETE statements are performed by the user).
The DB Code that I've written requires that I use Allow User Variables in my connection string. Without this setting, I am to login to the DB; with this setting, I am unable to login.
Here is an example of the code:
new MySqlConnection:
("server=XX.XX.XX.XX;
Port=3306;
database=store;
UserID=XXX;
password=XXX;
Allow User Variables=TRUE");
I have changed the access privileges for the user, but this has no effect on my ability to connect to the DB. Can anyone please let me know what I'm doing incorrectly? One other note, the DB is hosted on a different server than where this code is running.
I got this error message while connecting my app with the database at my website.
If i try using XAMPP using my computer, its work well.
FYI, the username and password is same as username and password that i created using XAMPP.
and also grant the privileges.
this is the connection string. for example the server is 174.125.80.140, the database name is myDB, the Uid is alfred, and the password is Alfred111.
MySqlConnection conn = new MySqlConnection("Server=174.125.80.140; Database=myDB;Uid=alfred;Pwd=Alfred111;");
I'm using MySQL client version: 4.1.22.
I'm still can't access the database. is there any solution??
If you are using MySQL workbench,
1) Start the workbench
2) click on the option "Users and Privileges" under SECURITY
3) click on add user (for the specific user), this is more secure because it lets you handle who has access over your database and lets you control access.
however if you want to grant access a large number of users for an application like c# application, then hard-code the username and password in the application, from the user privileges that you have set above.
Hope this helps (^_^)
Yes, you may have supplied the user and password correctly but have you configure the server (new server) to accept Uid=alfred;Pwd=Alfred111;?
Adding User in MySQL Server
If your app is on a different host that the MySQL server then you most likely need to add a new user granting permission for that host. Your alfred user is probably allowed by localhost and nothing else. Try CREATE USER 'altred#'%' identified by 'password'; and then grant that user privileges on myDB.
You can replace % with a specific IP address or hostname as well, % allows the connection from any host which is not necessarily safe.
You can try the following query to see the allowed user/host combos:
SELECT `User`, `Host` FROM `mysql.user`
Hope that helps.
I created my database on the server using code. Now no client on the local network can login to my database. This error occurs:
:"cannot open database "test" requested by the login.
the login failed for user "farzane".
Here is the connection string for my database:
ConnectionString=#"Data Source=SERVER\SQLEXPRESS;Initial Catalog=test;
Integrated security=SSPI;Persist Security Info=False";
How can I fix this problem?
I have about 30 clients on my network, and I don't want to create a login for every one. Is it possible to assign permissions and read/write access for all of them using code?
thanks.
If your clients have existing accounts on your LAN, you can right-click on the database, select Properties and then the Permissions section to assign users and groups the permissions you want them to have on your database. Alternatively, you can go to Security/Logins and right-click the groups or users you want to assign permissions to, select Properties, then choose the User Mappings section to grant permissions on specific databases.
Because you can do it with the GUI, you must be able to do it in code, but that I am afraid is not my area of expertise.
I am working on development machine without making any user account [i have three of four account who comes when i installed them].
so i open the connection everywhere by a globals variable who hold the connectionstring off-course value of variable can not be changed it's constant.
i open the connection using root account who come by default in mysql server. they work fine everywhere.
but my code try to run a command then server return the error that
The user specified as a definer ('admin'#'localhost') does not exist
i don't know why i got this error even in debug i found that connection open by root and they work fine everywhere else.
so the problem is why they tell me about admin#localhost even the connection my code open by root.
are their anything my code try to do who need authentication or need admin account even they not have then give me exception.
Are you know that what is gone wrong.
I got this error after DB was moved to another server.
There no such user 'admin' so I got the error.
Solution:
log into mysql as root
grant all on *.* to admin#localhost identified by "s!5_superp#ss!";
flush privileges;