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Power Platform Community / Forums / Power Automate / Planner user ID for de...
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Planner user ID for deleted user

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Posted on by 442
Hi,
it seems that when a user account is deleted, Planner changes the user ID with 36 characters to a 28 character string.
 
Is there a way to know what user account is connected to this 28 character string?
 
I have a SP list with names and Entra user ID:s (existing and deleted users).
 
Task created by existing user:
 
Task created by deleted user:
 
EDIT: I found Delete user data in Microsoft Planner - Microsoft Planner | Microsoft Learn and if I understand correctly, all deleted Planner users get the same user ID. If that's the case, it's plain stupid.
 
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  • Suggested answer
    David_MA Profile Picture
    14,956 Super User 2026 Season 1 on at
    Based on the information in the link, I would assume that this value represents the "Former user" value.
     
    The user's name and User.Id are deleted. Microsoft Planner stores the user's name and User.Id against the TaskUserID. When a user is deleted, Microsoft Planner retains the TaskUserID, but deletes the user's name and User.Id. This enables Microsoft Planner to:
    Rename the user to "Former user." All deleted users will be renamed "Former user."
    Keep information on "task created by", "task assigned to", and "task completed by" under the name "Former user."
    •  

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