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I set the mode to mixed and created a login for sql server, e.g sql_login_user.
This works and i am able to login to the server and database with the sql_login_user.
I then created a user in the database (readonly_user) and assigned them the "sql_login_user" login. I also selected SQL user with login. The schema was default (dbo).
However, when I try to connect with the user name readonly_user, I get an error - "login faile for user readonly_user..."
I'm fairly certain this worked for me in SQL Server 2014.
ANy help would be appreciated
In my .exe setup having connection string
Data Source=SERVER;Initial Catalog=POS_Chimur;User ID=sa;Integrated security=false
I have to install database for this exe what settings will be needed according to above connectionString.
Till now I have installed sql server with default instance with name of pc SERVER. Still i am unable to connect with above connection string.
You need to cheat your way in. Here's how I would approach this problem:
Data Source=SERVER;
You can create an alias to point to your final instance using "SQL Server Configuration Manager", "Aliases"
Initial Catalog=POS_Chimur;
You need to have a database named POS_Chimur
User ID=sa;Integrated security=false
Here, you need to provide a SQL login named sa with no password. I recommend to rename actual sa account to original_sa then create a new account named sa with no password. You also need to create a user mapping for that new account in the POS_Chimur database using this code.
CREATE USER sa FOR LOGIN sa;
ALTER ROLE [db_owner] ADD MEMBER sa;
If DBO doesn't work then you can give it SysAdmin rights if you still have error.
If you are using SQL Server security, you need to specify a username and a password, like this (where you replace 'mySApassword' with the actual password):
Server=SERVER;Database=POS_Chimur;User Id=sa;Password=mySApassword;
In the event you want to use Windows security, you will need this connection string:
Server=SERVER;Database=POS_Chimur;Trusted_Connection=True;
If you are running the executable on the same machine as where SQL Server is running, you can replace 'SERVER' with '.' in order to make it work on all computers, if you need to distribute it to more than one pc.
Here's some more information about SQL Server 2008 connection strings.
I see two things mainly:
You are connecting with SQL Server login
Go to SQL Server Management studio
Connect to the database server with administrative account you know and that works
right mouse click on the server in the 'Object Explorer' window
choose security
In the Server authentication group, choose 'SQL Server and Windows Authentication mode'
Restart SQL Server
This account is sa and doesn't have a password
Go to SQL Server Management studio
connect to the database server with administrative account you know and that works
unfold the server object [-]
unfold the Security folder [-]
unfold the Logins folder => find sa login
right click on it and click Properties
In General section uncheck the Enforce password policy checkbox and clean the passwords in both text boxes
In Status section, make sure that Login is Enabled and that the Permissions to connect is set to Grant
click Ok
confirm, that you want to create a login with blank password (which is obviously always a risk)
After performing those steps, please log out, and try to log in again, but change the Authentication drop down value to 'SQL Server Authentication' and try to login with sa and empty password, if it works, then the connection string should be fine too.
You need to mention the Provider. Your connectionstring should look like this.
Data Source=SERVER;Initial Catalog=POS_Chimur;User ID=sa;Integrated security=false; Provider="System.Data.SqlClient"
I've got this error:
A connection was successfully established with the server, but then an error occurred
during the login process. (provider: Shared Memory Provider, error: 0 - No process is
on the other end of the pipe.)
(Microsoft SQL Server, Error: 233)
I know, there are similar questions on this site, and the answer is, to enable TCP/IP and pipes.
But I enabled both, and still doesn't work:
I am using Microsoft SQL Server 2012 and the user has full permissions.
The server was set to Windows Authentication only by default. There isn't any notification, that the origin of the errors is that, so it's hard to figure it out. The SQL Management studio does not warn you, even if you create a user with SQL Authentication only.
So the answer is: Switch from Windows to SQL Authentication:
Right click on the server name and select properties;
Select security tab;
Enable the SQL Server and Windows Authentication mode;
Restart the SQL Server service.
You can now connect with your login/password.
Here are the directions by Microsoft: https://learn.microsoft.com/en-us/sql/database-engine/configure-windows/change-server-authentication-mode?view=sql-server-ver15
To solve this, connect to SQL Management Studio using Windows Authentication, then right-click on server node Properties->Security and enable SQL Server and Windows Authentication mode. If you're using 'sa' make sure the account is enabled. To do this open 'sa' under Logins and view Status.
If this didn't work, you may need to reinstall SQL Server
Also you can try to go to services and restart your Sql server instance
So, I had this recently also, for integrated security, It turns out that my issue was actually fairly simple to fix but mainly because I had forgotten to add "Trusted_Connection=True" to my connection string.
I know that may seem fairly obvious but it had me going for 20 minutes or so until I realised that I had copied my connection string format from connectionstrings.com and that portion of the connection string was missing.
Simple and I feel a bit daft, but it was the answer for me.
Another reason for this error could be incorrect or non-existent database name.
Forcing the TCP/IP connection (by providing 127.0.0.1 instead of localhost or .) can reveal the real reason for the error. In my case, the database name specified in connection string was incorrect.
So, here is the checklist:
Make sure Named Pipe is enabled in configuration manager (don't forget to restart the server).
Make sure the database you are connecting to exists.
Make sure SQL Server Authentication (or Mixed Mode) is enabled.
Please check this also Also check in configuration TCP/IP,Names PipeLine and shared memory enabled
If you are trying to login with SQL credentials, you can also try changing the LoginMode for SQL Server in the registry to allow both SQL Server and Windows Authentication.
Open regedit
Go to the SQL instance key (may vary depending on your instance name):
Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\MSSQL14.SQLEXPRESS\MSSQLServer\
Set LoginMode to 2
Restart SQL service and SQL Server Management Studio and try again.
I face this issue for the second time and all previous answers failed, fortunately the following request do the job:
Alter login [user] with CHECK_POLICY = OFF
go
Alter login [user] with CHECK_POLICY = ON
go
For me the password expired for my login user, and i got the same exception.
Then i login with Windows Authentication mode and change the password for the associated user, and it solved my problem.
Yup, this error might as well be "something failed, good luck figuring out what" - In my case it was a wrong username. SQL Server 2019 RC1.
Had this error too, the cause was simple, but not obvious: incorrect password. Not sure why I didn't get just "Login failed" from freshly installed SQL 2016 server.
I have the same proplem
"A connection was successfully established with the server, but then an error occurred
during the login process. (provider: Shared Memory Provider, error: 0 - No process is
on the other end of the pipe.)"
My connection is:
server=POS06\SQLEXPRESS; AttachDbFilename=C:...\Datas.mdf;Initial Catalog= Datas; User ID= sa; Pwd=12345; Connect Timeout=10;
But My SQL is POS06\MSQL2014
Change the connection string to
server=POS06\MSQL2014 ; AttachDbFilename=C:...\Datas.mdf;Initial Catalog= Datas; User ID= sa; Pwd=12345; Connect Timeout=10;
it worked.
Always try to log in using those credentials with SQL Management Studio. This might reveal some more details that you don't get at runtime in your code.
I had checked the SQL + Windows authentication, restarted the server but still no luck.
After trying to log in using SQL Management, I got this prompt:
Somehow the password had expired although the login was created just minutes before. Anyway, new password set, connection string updated and all's fine.
This might help others. After writing my db routines at home, all working fine. Brought it to work and got this error as well. Might assert same error, different reason. I mistyped the database name when fixing up my code. Ooohh! More coffee ;) Looking back now, kind of makes sense in my case the login/user was good (an admin account) but with a bad database name, there was nothing on the end of the pipe. Why not say "Database does not exists...? And be clear.
make sure that you have specified user in Security-> Logins, if no - add it and try again.
Follow the other answer, and if it's still not working, restart your computer to effectively restart the SQL Server service on Windows.
In my case the database was restored and it already had the user used for the connection. I had to drop the user in the database and recreate the user-mapping for the login.
Drop the user
DROP USER [MyUser]
It might fail if the user owns any schemas. Those has to assigned to dbo before dropping the user. Get the schemas owned by the user using first query below and then alter the owner of those schemas using second query (HangFire is the schema obtained from previous query).
select * from information_schema.schemata where schema_owner = 'MyUser'
ALTER AUTHORIZATION ON SCHEMA::[HangFire] TO [dbo]
Update user mapping for the user. In management studio go to Security-> Login -> Open the user -> Go to user mapping tab -> Enable the database and grant appropriate role.
In my case: Assign a sysadmin role to the user.
Login as windows authenticated user
Go to: Security->Login->Right click user->Assign server role as sysadmin
In my case, login works fine remotely, via VPN. But connecting from the server where sql server was installed, it failed.
Turns out, the instance name is not the default eg. SQLEXPRESS. Hence, it needs to be explictly specified when connecting.
Server name: .<instance_name>
eg. ".\I01"
I don't have to do this if I'm connecting remotely, just <server_hostname>,<port_number>
I have created an application pool called "schoolPool" and assigned it to my web application. Identity for this pool has been set to LocalSystem.
When I try to access my database from within the application, i.e. open a SQL connection, I get the following error all the time:
Login failed for user 'NT AUTHORITY\SYSTEM'
I tried to add NT AUTHORITY/SYSTEM to SSMS (SQL Server Management Studio) logins, but it was already a principal, showing the following error:
Allow NT AUTHORITY/SYSTEM to server Role as sysadmin.
I tweaked the application settings a lot, changing the application pool's identity (in Windows 8.1's IIS) to LocalSystem, LocalService, NetworkService, and ApplicationPoolIdentity. However, all of them failed to solve the problem I had logging into my database.
Finally I set the pool identity on LocalSystem and thought why it might be preventing "NT AUTHRITY\SYSTEM" from opening a connection to my database. I opened up SQL Server Management Studio as "Administrator" and checked the Server Roles for NT AUTHORITY\SYSTEM under "logins" section. The default server role for this user was public by default. I also checked sysadmin and refreshed my web application form. This time it worked! Everything working perfectly now.
There is another fix. You should open Command Prompt (cmd) and write the following:
sqlcmd -S (server name)
select name from sys.server_principals where name = 'NT AUTHORITY\SYSTEM'
go
SP_ADDSRVROLEMEMBER 'NT AUTHORITY\SYSTEM','SYSADMIN'
go
The first line will give you an access to the sql server on you machine, the second will
take the following result NT AUTHORITY\SYSTEM an the stored procedure addsrvrolemember will add sysadmin to it. Be careful, because you have to type the following code the way it is.
Rerun following query which will assign 'NT SERVICE\MSSQLSERVER' to sysadmin
EXEC master..sp_addsrvrolemember #loginame = N'NT SERVICE\MSSQLSERVER', #rolename = N'sysadmin'
Musakkhir's answer of granting sysadmin seems poorly thought out as far as security goes, and Pinal's answer involved giving the unknown process db_owner rights, still almost certainly overkill. I've 'solved' it myself by simply granting "public" rights, which normally just allows CONNECT, but nothing else, even SELECT. If gets rid of the login error and stops flooding the error log, since it now logs in, but whatever unknown process is doing the connecting still can't do anything.
You should give your User ID and pwd of SQL server authentication login in the connectionStrings as User ID="username";pwd="yourpassword". You can use the following query
CREATE LOGIN login name WITH PASSWORD = 'password' ;
GO
I am getting this error while trying to connect to the SQL Server.
Microsoft SQL Server Error: 18456
Can anybody tell me what the error code means?
If you're trying to connect using "SQL Server Authentication" then you may want to modify your server authentication:
Within the Microsoft SQL Server Management Studio in the object explorer:
Right click on the server and click Properties
Go to the Security page
Under Server authentication choose the SQL Server and Windows Authentication mode radio button
Click OK
Restart SQL Services
Check out this MSDN blog article from the data platform team.
You really need to look at the state part of the error message to find the root cause of the issue.
2, 5 = Invalid userid
6 = Attempt to use a Windows login name with SQL Authentication
7 = Login disabled and password mismatch
8 = Password mismatch
9 = Invalid password
11, 12 = Valid login but server access failure
13 = SQL Server service paused
18 = Change password required
Afterwards, Google how to fix the issue.
Before opening, right-click and choose 'Run as Administrator'. This solved the problem for me.
I have faced this issue.
Please look at the attached image,
Step 1: Go to server property
Step 2: Go to Security
Step 3: Change server authentication as SQL server and WindowsAuthenication mode
and restart your Sql server.
first see the details of the error
if "state" is "1"
Ensure the database is set for both SQL and Windows authentication under SQL server / Properties / Security.
for other state see the above answers ....
Just an update, here is the solution if anyone else has there error with a properly configured login:
If you're trying to connect using "SQL Server Authentication" then you may want to modify your server authentication:
Within the Microsoft SQL Server Management Studio in the object explorer:
Right click on the server and click Properties
Go to the Security page
Under Server authentication choose the SQL Server and Windows Authentication mode radio button
Click OK
Restart SQL Services
Check whether mixed mode authentication is enabled in you server->properties
Then create a login in the server->security
create an user for that login in your database
Then restart your server by right clicking the instance and select restart
If you change a login user credential or add new login user then after you need to log in then you will have to restart the SQL Server Service. for that
GO to--> Services
Then go to SQL Server(MSSQLSERVER) and stop and start again
Now try to log in, I hope You can.
Thanks
Just happened to me, and turned out to be different than all other cases listed here.
I happen to have two virtual servers hosted in the same cluster, each with it own IP address. The host configured one of the servers to be the SQL Server, and the other to be the Web server. However, SQL Server is installed and running on both. The host forgot to mention which of the servers is the SQL and which is the Web, so I just assumed the first is Web, second is SQL.
When I connected to the (what I thought is) SQL Server and tried to connect via SSMS, choosing Windows Authentication, I got the error mentioned in this question. After pulling lots of hairs, I went over all the setting, including SQL Server Network Configuration, Protocols for MSSQLSERVER:
Double clicking the TCP/IP gave me this:
The IP address was of the other virtual server! This finally made me realize I simply confused between the servers, and all worked well on the second server.
Right Click the User, go to properties, change the default database to master
This is the screen print of the image which shows what you have to check if you have the error 19456. Sometimes it default to a database which the user doesn't have permission
18456 Error State List
ERROR STATE ERROR DESCRIPTION
State 2 and State 5 Invalid userid
State 6 Attempt to use a Windows login name with SQL Authentication
State 7 Login disabled and password mismatch
State 8 Password mismatch
State 9 Invalid password
State 11 and State 12 Valid login but server access failure
State 13 SQL Server service paused
State 18 Change password required
Potential causes
Below is a list of reasons and some brief explanation what to do:
SQL Authentication not enabled: If you use SQL Login for the first time on SQL Server instance than very often error 18456 occurs because server might be set in Windows Authentication mode (only).
How to fix? Check this SQL Server and Windows Authentication Mode page.
Invalid userID: SQL Server is not able to find the specified UserID on the server you are trying to get. The most common cause is that this userID hasn’t been granted access on the server but this could be also a simple typo or you accidentally are trying to connect to different server (Typical if you use more than one server)
Invalid password: Wrong password or just a typo. Remember that this username can have different passwords on different servers.
less common errors: The userID might be disabled on the server. Windows login was provided for SQL Authentication (change to Windows Authentication. If you use SSMS you might have to run as different user to use this option). Password might have expired and probably several other reasons…. If you know of any other ones let me know.
18456 state 1 explanations: Usually Microsoft SQL Server will give you error state 1 which actually does not mean anything apart from that you have 18456 error. State 1 is used to hide actual state in order to protect the system, which to me makes sense. Below is a list with all different states and for more information about retrieving accurate states visit Understanding "login failed" (Error 18456) error messages in SQL Server 2005
Hope that helps
Also you can just login with windows authentication and run the following query to enable it:
ALTER LOGIN sa ENABLE ;
GO
ALTER LOGIN sa WITH PASSWORD = '<enterStrongPasswordHere>' ;
GO
Source: https://learn.microsoft.com/en-us/sql/database-engine/configure-windows/change-server-authentication-mode
First go to start bar then search local services
Then click on "view local services"
Then it will open service window then go to SQL Server(MSSQLSERVER) right click on it and click on stop and then again right click on it and click start. Now you can able to login and put your user name as 'sa' and password is your won password.
Please check to see if you are connected to the network if this is a domain member PC. Also, make sure you are not on a dual home PC as your routes may be incorrect due to network metrics. I had this issue when I could not connect to the domain the SQL windows authentication switched to the local PC account but registered it as a SQL authentication. Once I disabled my wireless adapter and rebooted, the Windows integration switched back to the domain account and authenticated fine. I had already set up Mixed mode as you had already done as well so the previous posts do not apply.
For me, it was wrong login and password.
I believe this can happen if you are trying to log in with a user that is defined in Active Directory, but attempt using "SQL Server Authentication" in the login screen. I do not know how to specify a different user with NTLM/Windows Authentication: When I click the Windows Authentication dropdown, the username and password is blanked out, and I can only log in as myself.
In my case multiple wrong attempts locked the account.To do that I had tried running the below query and it worked:
ALTER LOGIN WITH PASSWORD= UNLOCK
And make sure to set the option "Enforce Password Security" option for specific user to be unchecked by right click on Sql Server -> Properties.
SQL Server connection troubleshoot
In case you are not able to connect with SQL Authentication and you've tried the other solutions.
You may try the following:
Check connectivity
Disable Firewall.
Run PortQry on 1434 and check the answer.
Check the state
Try to connect with SSMS or sqlcmd and check the message.
State 1 is rarely documented but it just mean you don't have the right to know the true state.
Look at the log file in the directory of SQL server to know what is the state.
The State 5
What ? my login doesn't exist ? it's right there, I can see it in SSMS. How can it be ?
The most likely explanation is the most likely to be the right one.
The state of the login
Destroy, recreate it, enable it.
reset the password.
Or...
"You don't look at the right place" or "what you see is not what you think".
The Local DB and SQLEXPRESS conflict
If you connect with SSMS with Windows authentication, and your instance is named SQLEXPRESS, you are probably looking at the LocalDb and not the right server. So you just created your login on LocalDb.
When you connect through SQL Server authentication with SSMS, it will try to connect to SQLEXPRESS real server where your beloved login doesn't exist yet.
Additional note: Check in the connection parameters tab if you've not forgotten some strange connection string there.
Another worked solution for me.
serever->security->logins->new logins->General->create your user name as login name,Click sql server authentication add passwords
uncheck the password verification three checkboxes .
This will work.
Remeber to change the server properties ->Security from Server authentication to SQL Server and Windows Authentication mode
you can do in linux for mssql
change password for sa account
sudo /opt/mssql/bin/mssql-conf setup
The license terms for this product can be downloaded from
http://go.microsoft.com/fwlink/?LinkId=746388 Jump Jump
and found in /usr/share/doc/mssql-server/LICENSE.TXT.
Do you accept the license terms? [Yes/No]:yes
Setting up Microsoft SQL Server
Enter the new SQL Server system administrator password: --Enter strong password
Confirm the new SQL Server system administrator password: --Enter strong password
starting Microsoft SQL Server...
Enabling Microsoft SQL Server to run at boot...
Setup completed successfully.
I got this error after creating a new sysadmin user under my SQL instance.
My admin user was created under a specific domain
MyOrganization/useradmin
Using useradmin on a disconnected environment allows you to create other users using SQL Server authentication, but as soon as you try to login you get
Microsoft SQL Server Error: 18456
To fix the problem, try to connect again to your Organization network and create the user while you are connected and then you can get disconnected and will work.
I have faced the same issue. In case you see it, run this query:
DBCC FREEPROCCACHE
DBCC DROPCLEANBUFFERS
then it shows a 18456 error code.
Do one thing again run same query after reconnecting SQL server. It will work fine.
Click on "Options" and under "Connection Properties" specify the catalog/database name next to "Connect to database:". I got the error because this was set to <default> and I needed to specify the dbname.
Microsoft SQL Server, Error: 18456
I was getting an issue because I was entering the wrong password.
Microsoft SQL Server, Error code: 18456 - This indicates that the password is incorrect.
Reference: https://learn.microsoft.com/en-us/sql/relational-databases/errors-events/mssqlserver-18456-database-engine-error?view=sql-server-ver16
it happen with me when I have restored my computer
enable windows and sql authentication
reboot your PC
in vs code in my case still in error because i forget install pyodbc :D