MC1520706 - Power Platform – Update for read access to custom connector definitions for Basic User role

Microsoft 365 Message Center announcement MC1520706.

MS Message Center's Summary

Microsoft is updating Power Platform read access for custom connector definitions in October 2026. Users with the Dataverse Basic User security role will lose read access to solution custom connectors unless they own them or have explicit sharing. Administrators should review current environment permissions and create custom security roles providing organization level read permissions on the connector table where broad access is necessary.

Administrator impact
Administrators must review environment permissions and create custom security roles for users who require continued access to custom connectors.
End user impact
End users assigned the Basic User security role will experience reduced visibility into custom connector definitions unless permissions are explicitly granted.
Importance
6/10: This change alters default security permissions and requires administrator intervention to prevent user disruption.
Message Center ID
MC1520706
Category
prevent Or Fix Issue
Severity
normal
Services
Power Platform
Tags
Admin impact
Published
2026-10-22
Last updated
2026-10-22
Expires
2026-11-22

In October 2026, we are updating read access for custom connector definitions in Power Platform. Users assigned the Dataverse Basic User security role will no longer be able to read solution custom connector definitions unless the connector is owned by that user or explicitly shared with them. What action do I need to take? Please take the actions listed below: Review environments where users with the Basic User role need to read custom connector definitions. Create and assign a custom security role with organization-level Read permission on the Connector table when users need access to all custom connectors in an environment. Update internal maker and admin guidance to reflect the new access model. Why is this action needed? This update improves security by limiting access to connector definitions and configuration details that were not intentionally shared. If you need additional assistance, please contact Microsoft Support.