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56 lines
2.1 KiB
Markdown
56 lines
2.1 KiB
Markdown
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---
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title: Troubleshooting for MSSQL
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slug: /connectors/database/mssql/troubleshooting
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---
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# Resolving SQL Server Authentication Issue for Windows User
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This guide addresses a common issue when connecting to a SQL Server instance using Windows OS. If you encounter the error below, follow the steps outlined to resolve it effectively.
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## Error Description
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When attempting to connect to SQL Server using a Windows user, the following error appears:
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```
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(pyodbc.InterfaceError) ('28000', "[28000] [Microsoft][ODBC Driver 18 for SQL Server][SQL Server]Login failed for user 'domain\\user'. (18456)")
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```
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Additionally, the SQL Server logs display:
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```
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Login failed for user 'domain\user'. Reason: Attempting to use an NT account name with SQL Server Authentication.
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```
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## Root Cause
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The error occurs because the connection is configured to use SQL Server Authentication instead of Windows Authentication. Windows Authentication requires a connection scheme that supports integrated security.
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## Resolution
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### Step 1: Verify Connection Configuration
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1. Ensure that you are connecting to SQL Server using **Windows Authentication**.
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2. Update the connection scheme to use `mssql+pymssql` instead of `mssql.pyodbc`.
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### Step 2: Update the Connection Details in Collate
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1. Navigate to **MSSQL Service Configuration** in the Collate UI.
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2. Update the **Connection Scheme** to `mssql+pymssql`.
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3. Retain the following connection details:
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- **Host and Port**: e.g., `10.121.89.148:62452`.
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- **Database**: Specify the target database (e.g., `OneSumx_Stoging`).
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- **Username**: Use the Windows account username, e.g., `domain\user`.
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4. Save the updated configuration.
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### Step 3: Test the Connection
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1. After saving the changes, click **Test Connection** in the Collate UI.
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2. Confirm that the following steps pass successfully:
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- **CheckAccess**
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- **GetDatabases**
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- **GetSchemas**
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- **GetTables**
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- **GetViews**
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- **GetQueries**
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### Expected Outcome
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After updating the connection scheme, the connection should succeed. The status will display:
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```
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Connection Status: Success
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```
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