Ssis-835 May 2026

SSIS-835 Error Report

Error Description: The SSIS-835 error is a common issue encountered in SQL Server Integration Services (SSIS) that typically occurs when there is a mismatch or inconsistency in the version of the SQL Server client library used to connect to a data source.

Error Message: "The EXECUTE permission was denied on the object 'sp_describe_unhandled_exception', database 'msdb', schema 'sys'. (Microsoft OLE DB Provider for SQL Server)". SSIS-835

Causes:

1. Version Incompatibility: Using an incompatible version of the SQL Server client library to connect to a SQL Server instance.
2. Insufficient Permissions: The account executing the SSIS package lacks necessary permissions on the msdb database.

Troubleshooting Steps:

Step 1: Verify SQL Server Client Library Version

1. Check the client library version used in your SSIS package. Ensure it matches or is compatible with the SQL Server instance version.

3️⃣ Real‑World Scenarios That Trigger SSIS‑835

| # | Scenario | Why It Happens | |---|----------|----------------| | 1️⃣ | Dev → Prod migration – The package was built on a dev laptop with the 32‑bit ACE driver, then deployed to a production SSISDB that only has the 64‑bit driver. | Provider cannot be instantiated. | | 2️⃣ | Azure Data Factory (ADF) → Azure‑SSISIR – The SSISIR is 64‑bit only, but the package still references Microsoft.ACE.OLEDB.12.0. | Same mismatch, plus no easy “Run in 32‑bit mode”. | | 3️⃣ | SQL Server 2022 on Windows Server 2022 – You installed the Access Database Engine 2016 Redistributable (32‑bit) to satisfy another app. The 64‑bit driver is missing. | SSIS runs 64‑bit → driver missing. | | 4️⃣ | File path / permission issue – The Excel file lives on a network share that the SSIS service account can’t reach. The provider throws a generic COM error that appears as SSIS‑835. | Not a driver issue, but the error mask looks identical. | | 5️⃣ | Mixed‑mode packages – Some data flows use ACE, others use ODBC. The package runs with Run64BitRuntime = False in Visual Studio, but the deployment uses the default 64‑bit runtime. | Inconsistent execution mode. |

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✅ Path B – Force the Package to Run 32‑Bit

Only viable on‑prem (SQL Agent) – not in Azure‑SSISIR. SSIS-835 Error Report Error Description: The SSIS-835 error

1. In SQL Server Data Tools, set Project → Properties → Debugging → Run64BitRuntime = False.
2. In the SQL Agent job step, check “Use 32‑bit runtime”.
3. Ensure the 32‑bit ACE driver is installed (AccessDatabaseEngine.exe).

Caution: Running 32‑bit can impose memory limits (≈2 GB) on your data flow, which may cause out‑of‑memory errors for large Excel files.

4) Immediate mitigations (short term)

• Isolate affected SSIS servers from untrusted networks; block inbound access except management subnets.
• Restrict who can deploy/upload packages (least privilege on msdb and file share).
• Disable or pause automatic SSIS package execution where feasible.
• Apply host-based EDR rules to block creation/execution of suspicious child processes by dtexec.exe/sqlservr.exe.
• Rotate credentials for service accounts used by SSIS and SQL Agent.

Step 2: Use the Correct OLE DB Provider

• Check the provider: Verify that the correct OLE DB provider is being used to connect to the SQL Server instance.
• Change the provider: If necessary, change the OLE DB provider to the correct one, such as "SQLNCLI" or "SQLNCLI11".

SSIS-835 Error Report

3. The Final Act’s Emotional Payoff

Unlike typical releases where the final scene is purely mechanical, SSIS-835 ends on a melancholic, ambiguous note. The aftermath focuses on the cost of the encounter, leaving the viewer with lingering questions about the characters’ future. It’s haunting and memorable. Troubleshooting Steps: Step 1: Verify SQL Server Client

Executive summary

A concise, actionable report on CVE-2023-XXXX / SSIS-835 (assumed: remote code execution vulnerability in Microsoft SQL Server Integration Services) including impact, root cause, detection, mitigation, and recommended remediation steps.