My current n8n platform cannot link with excel sheet under m365

[azwin]

Describe the problem/error/question

What is the error message (if any)?

Your issue likely comes from Microsoft 365 Excel integration limitations in n8n. Currently, n8n supports Microsoft services through its Microsoft Graph API.

Please share your workflow

(Select the nodes on your canvas and use the keyboard shortcuts CMD+C/CTRL+C and CMD+V/CTRL+V to copy and paste the workflow.)

Share the output returned by the last noden8n

Information on your n8n setup

• n8n version:
• Database (default: SQLite):
• n8n EXECUTIONS_PROCESS setting (default: own, main):
• Running n8n via (Docker, npm, n8n cloud, desktop app):
• Operating system:

[achamm]

Based on your screenshot, you’re encountering a “500 - The service was not able to process your request” error when trying to load workbooks from your Microsoft Excel 365 account. This is a known issue with SharePoint-hosted Excel files in n8n, as documented in [github.com]([Bug] Cannot modify SharePoint Excel files due to a sequence of 403 WAC token and 404 Not Found errors · Issue #20040 · n8n-io/n8n · GitHub).

Here are some solutions to try:

• **Re-authenticate your Microsoft Excel credentials** - Go to your credentials and reconnect your Microsoft account

• **Use the workaround approach**: Download the Excel file using SharePoint → use the Spreadsheet File node for modifications → upload back to SharePoint

• **Check file permissions** - Ensure your Microsoft account has proper read/write access to the Excel file in SharePoint

• **Try using the file ID directly** - If you can get the Microsoft Graph `driveItem.id` of your Excel file, use “By ID” instead of “From list”

The Microsoft Graph API that n8n uses has authentication token issues with SharePoint-hosted Excel files, which is why the workbook list won’t load. The download/modify/upload workaround is currently the most reliable solution for SharePoint Excel files.