TH1
September 23, 2025, 3:39am
1
I am still not able to connect to my local SQL Server from my local n8n. My is Windows authentication without username and password.. it cannot connect… .. but even when I created a username and password below, it failed too:
-- Run this in SSMS when connected with Windows auth
CREATE LOGIN n8n_user WITH PASSWORD = 'YourPassword123!', CHECK_POLICY = OFF;
USE SalesDemo;
CREATE USER n8n_user FOR LOGIN n8n_user;
ALTER ROLE db_owner ADD MEMBER n8n_user; -- More permissions for testing
Hi there,
I see you are having trouble connecting to local sql server from your local installation, can you please download this workflow and see if it works,
```
{
"name": "My workflow 2",
"nodes": [
{
"parameters": {},
"type": "n8n-nodes-base.manualTrigger",
"typeVersion": 1,
"position": [
0,
0
],
"id": "be39e878-e39b-4b7c-9057-66deb490c35c",
"name": "When clicking ‘Execute workflow’"
},
{
"parameters": {
"operation": "executeQuery",
"query": "create * from pets;"
},
"type": "n8n-nodes-base.microsoftSql",
"typeVersion": 1.1,
"position": [
208,
0
],
"id": "46f6eb7d-0832-4960-a5b3-d7ff912737c6",
"name": "Microsoft SQL",
"credentials": {
"microsoftSql": {
"id": "eLYkSIo0XpJgvFdD",
"name": "Microsoft SQL account 2"
}
}
}
],
"pinData": {},
"connections": {
"When clicking ‘Execute workflow’": {
"main": [
[
{
"node": "Microsoft SQL",
"type": "main",
"index": 0
}
]
]
}
},
"active": false,
"settings": {
"executionOrder": "v1"
},
"versionId": "30a5493a-ff28-42a6-b54e-327a39fbf0b8",
"meta": {
"templateCredsSetupCompleted": true,
"instanceId": "316dcdd65a8a62f8bdab1bf9efb9f5f42c8c0503bbd989b8df5cce35c599fe45"
},
"id": "ZfGz4BL2KJzHOZ3K",
"tags": []
}
```
Also please ensure to add the correct database, port, username and password in the below dialog and try again,
Cheers!
1 Like
Dhruv29
September 23, 2025, 4:46am
3
@TH1
If you’re running n8n docker image and also use SQL server in docker make sure both are in same network.
TH1
September 23, 2025, 5:20am
5
that was extactly what I am doing, but I could not get the connection through.
TH1
September 23, 2025, 5:26am
6
could there be any firewall issue, as I read from MSSQL connection problem with instance - #17 by christiaanwesterbeek but I am actually testing everything in local PC (not even using Docker), so there should not be any firewall issue.
system
Closed
October 2, 2025, 4:47am
7
This topic was automatically closed 7 days after the last reply. New replies are no longer allowed.