repair system files steps

Author: chcomley

docs/boards/backlogs/office/tfs-office-integration-issues.md

@@ -7,7 +7,7 @@ ms.assetid: 819EA180-2BAC-46DB-A17E-A5179E6BEADC
 ms.author: chcomley
 author: chcomley
 ms.topic: troubleshooting
-ms.date: 09/12/2025
+ms.date: 09/19/2025
 ---
 
 # Resolve Azure DevOps and Office integration issues
@@ -284,15 +284,31 @@ Resolve this issue by creating a configuration file that redirects assembly bind
    </configuration>
    ```
 
-4. Save the file and ensure it is named exactly `excel.exe.config` (not `excel.exe.config.txt`).
+4. Save the file and ensure it's named exactly `excel.exe.config` (not `excel.exe.config.txt`).
 
 5. Close all Excel instances and restart Excel.
 
 6. Test the connection by attempting to connect to Azure DevOps from Excel again.
 
+If the problem persists after completing the previous troubleshooting steps, consider repairing the user's profile and checking for corrupted system files.
+
+1. Open the Command Prompt or PowerShell as the Administrator.
+2. Run the DISM tool to repair the Windows image:
+
+```cmd
+DISM.exe /Online /Cleanup-Image /RestoreHealth
+```
+
+3. After DISM completes, run the System File Checker:
+
+```cmd
+sfc /scannow
+```
+
 ## Related content
 
 - [Bulk modify work items (web portal)](../bulk-modify-work-items.md)  
 - [Bulk import or update work items using CSV files](../../queries/import-work-items-from-csv.md)
 - [FAQs: Work in Excel connected to Azure Boards](faqs.yml)
 - [Add or remove add-ins](https://support.office.com/article/Add-or-remove-add-ins-0af570c4-5cf3-4fa9-9b88-403625a0b460)
+