Ssis-835

Regularly monitor package executions to catch and resolve issues early.

To avoid the SSIS-835 error, follow these best practices: SSIS-835

Problems with the connections to data sources or destinations can lead to this error. This could be due to incorrect connection strings, network issues, or permissions problems. Regularly monitor package executions to catch and resolve

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| Step | Action | Expected Outcome | |------|--------|-------------------| | | Verify the provider name in the OLE DB connection manager ( Provider= line in the connection string). | Should be Microsoft.ACE.OLEDB.12.0 or Microsoft.ACE.OLEDB.16.0 . | | 2 | On the SSIS server, open a Command Prompt as the SSIS service account and run: reg query "HKLM\SOFTWARE\Microsoft\Office\12.0\Access Connectivity Engine" (32‑bit) or reg query "HKLM\SOFTWARE\WOW6432Node\Microsoft\Office\12.0\Access Connectivity Engine" (64‑bit). | The key must exist for the architecture you plan to run. | | 3 | Run c:\Windows\System32\odbcad32.exe (64‑bit) → Drivers tab → look for “ Microsoft Access Driver (*.mdb, *.accdb) ”. | If missing, install the 64‑bit ACE redistributable. | | 4 | In SQL Server Data Tools (SSDT) , open the package → Project Properties → Debugging → Run64BitRuntime . Set it to True (default) if you intend to run 64‑bit on server. | Ensures the same architecture as production. | | 5 | If you must run 32‑bit (e.g., only 32‑bit ACE is available), go to the SQL Agent job → Step → Advanced → Use 32‑bit runtime . | Works only on on‑premises SQL Agent; not in Azure‑SSISIR. | | 6 | Test the connection outside of SSIS: Open PowerShell and run: $conn = New-Object System.Data.OleDb.OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\temp\test.xlsx;Extended Properties='Excel 12.0 Xml;HDR=YES'") $conn.Open() | If you get System.Data.OleDb.OleDbException , the driver is still missing or the file path is wrong. | | 7 | Check file permissions – ensure the SQL Server service account (or the Azure‑SSISIR managed identity) can read/write the source file. | If access denied, you’ll see 0x80004005 as the underlying COM error. | | 8 | Look for multiple ACE versions on the box ( 12.0 , 14.0 , 16.0 ). Mixed installations can cause registry redirection issues. | Uninstall older versions; keep only the version you intend to use. |

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