Summary
- Microsoft is retiring the ability to load Power Query data into the Python runtime in Excel for the web.
- The change affects users who combine Power Query and Python in Excel on the web; those workflows will stop working there.
- Excel for Windows desktop is not affected, and users can continue using Power Query and Python together on supported desktop experiences.
- No administrative action is required, but IT should identify impacted users and update communications, training, and documentation.
Microsoft is retiring support for loading Power Query data into Python in Excel for the web on October 16 2026. This change does not affect Excel for Windows desktop. Administrators should identify impacted users and advise them to transition affected browser workflows to the desktop application before the retirement date.
Administrator impact: No direct administrator action is required.
End user impact: Users will no longer be able to load Power Query data into Python in Excel for the web after October 16 2026.
Score rationale: This is a feature retirement with limited scope affecting only web users of a specific data integration.
Microsoft will retire support for loading Power Query data into Python in Excel for the web on October 16, 2026. This affects users combining Power Query and Python in Excel for the web but not Excel desktop. No admin action is needed; affected users should be notified and workflows reviewed.
Message ID: MC1473149
Primary Service: Excel
Admin Impact: Low
User Impact: High
Release Start: 16 Oct 2026
Release End: 16 Oct 2026
Published: 17 Sept 2026
Expires: 28 Dec 2026
Last updated: 17 Sept 2026
Rollout: October 2026
Services: Excel, M365 Apps
Category: Plan for change
Tags: Admin Action, Retirement, User Adoption
History
9/16/2026 Item Added to Message Center
Microsoft Message
Microsoft is retiring support for loading Power Query data into the Python runtime in Excel for the web. After this change, users will no longer be able to use Power Query as a data source for Python in Excel when working in Excel for the web. This retirement aligns investments in Python in Excel with supported experiences and does not affect Excel for Windows desktop.
Rollout Schedule
- Retirement date: October 16, 2026
Impact on Your Organization
Who is affected
- Users who use Python in Excel with Power Query data sources in Excel for the web.
Platforms affected
- Excel for the web
What will happen
- Beginning October 16, 2026, users will no longer be able to load Power Query data into the Python runtime in Excel for the web.
- Workflows that depend on combining Power Query and Python in Excel for the web will no longer function as expected.
- No changes are being made to Python in Excel experiences in Excel for Windows desktop.
- Users can continue to import external data by using Power Query and analyze data with Python in Excel on supported desktop experiences.
Action Required / Recommendations
- No administrative action is required.
- Identify users and business processes that rely on Power Query data being loaded into Python in Excel for the web.
- Notify affected users of the retirement and expected workflow impact.
- Review affected solutions and consider transitioning those workflows to Excel for Windows desktop where this capability remains available.
- Update internal training, documentation, and support materials as needed.