Share a planner that is currently located in a private team to a non-member.

Planner plans are secured by the Microsoft 365 group/Team they belong to. To give colleagues access to a plan in a private team, they must have access to the underlying group; there is no supported way to let them use the plan while remaining non‑members of that private team.

Supported options:

1. Add them as guests or members to the private team’s group
   Guest access in Planner is built on Microsoft 365 Groups guest access. A group owner can add external or internal users as guests/members to the group; once added, they can access the plan.
   • Step 1: A group owner adds the users to the group associated with the plan.
   • Step 2: They accept the invitation (if guests) and sign in.
   • Step 3: They access the plan via Planner or the Teams channel where the plan tab is added.
   This is the only way to give people direct access to that specific plan.
2. Create a separate plan in a different (less restrictive) team or group and share that instead
   If adding them to the private team is not acceptable, create a new plan in a team or Microsoft 365 group where those colleagues can be members, then manually recreate or migrate tasks there. Once they are members of that group, they can use the plan normally.
3. Use Loop/Planner integration only with users who already have plan access
   When using the Planner component in Loop, only people who already have access to the underlying plan (i.e., are members/owners of the associated Microsoft 365 group) can view or edit it. Sharing the Loop page alone does not bypass the group membership requirement.

In summary, Planner does not support exposing a plan from a private team to users who are not members of that team’s Microsoft 365 group. The practical choices are to grant them membership (member or guest) to that group, or move/copy the work into a plan under a group they can join.

References:

• Guest access in Microsoft Planner
• Use the Planner component in Loop
• Frequently asked questions for admins about Microsoft Planner