Microsoft’s Excel Connector Retirement Could Break Your Workbooks

Microsoft is retiring Excel’s Exchange Connector, and organizations that rely on it will need to manually migrate affected workbooks before April 2027.

According to Microsoft 365 Message Center entry MC1461158, Microsoft plans to replace Excel’s existing Exchange data connector with new Exchange connectors. However, existing workbook connections will not migrate automatically.

Existing Excel workbooks could stop working

Excel currently lets users pull Exchange data into workbooks through its Exchange Connector. Once Microsoft retires that connector, workbooks that continue relying on it could stop retrieving Exchange data.

Workbook authors and IT administrators will need to identify files that use the existing connector and manually move those connections to Microsoft’s replacements.

This could prove especially important for business-critical spreadsheets that pull Exchange Mail or Calendar data.

Microsoft plans to retire the connector in April 2027

Microsoft has outlined a gradual migration timeline.

Customer validation of the new Exchange connectors begins in August 2026. In October 2026, Microsoft will start the final phase of Exchange Web Services retirement enforcement.

Microsoft then plans to fully retire Excel’s existing Exchange Connector in April 2027. After that date, customers will need to use the replacement connectors.

Older Office versions will not get the replacement

There is another potential complication for organizations running older Office releases.

Microsoft says the new Exchange connectors will only come to Microsoft 365 and Office 2024. Customers using Office 2021 or earlier releases will therefore need to upgrade if they want to continue using supported Exchange connectors.

Organizations should review existing Excel workbooks now, identify important Exchange-dependent files, test the new connectors when available, and complete migrations before April 2027.

In other news, PowerPoint is getting SmartArt improvements, while Microsoft Planner users will finally be able to see worker capacity.

The removal also comes as Microsoft Office faces criticism for forcing users to use the Ribbon interface.

Via Neowin