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Power Pages - Design & Build
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“User Not Found in F&O” Error with Power Pages Virtual Entities and Service Principal Configuration

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We have a Power Pages (Power Apps portal) that surfaces data from Microsoft Dynamics 365 Finance & Operations via virtual entities in Dataverse. The portal is prompting the following error:

"User portal:{00000000-0000-0000-0000-000000000000} was not found in Finance and Operations. Please ensure this user exists."

Despite configuring a service principal (Client ID and Secret) in the F&O virtual data source record, the portal still seems to pass the portal user's identity to F&O, causing the “User not found” error. I suspect that something is overriding the service principal authentication and reverting to a per-user delegation mode.

Question:

  1. How do we fully configure Dataverse to use a single service principal for all calls to F&O virtual entities (so that F&O doesn't try to match each portal user)?
  2. Could you provide direct references or official Microsoft documentation that explains how to disable per-user impersonation and ensure the service principal authentication is enforced?

Goal:

  • Stop the portal from sending the portal user's identity to F&O.
  • Rely solely on the service principal account we’ve configured, so the “user not found” error no longer occurs.
  • Confirm the specific steps or environment variables in Dataverse and F&O that must be set, plus any relevant hidden fields or flags, to ensure service principal authentication is used.
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  • Suggested answer
    SaiRT14 Profile Picture
    1,988 Super User 2025 Season 2 on at
    “User Not Found in F&O” Error with Power Pages Virtual Entities and Service Principal Configuration
     
     
    Here are the high-level steps:
    • Configure the F&O virtual entity data source in Dataverse to use Service Principal Authentication.
    • Disable per-user impersonation by setting EnablePerUserImpersonation to False in the portal.
    • Ensure the service principal has the correct permissions in both Dataverse and F&O.
    • Verify that no user mappings exist between portal users and F&O users in F&O’s system administration.
    pls let me know if you need more details. thanks
  • Lucas001 Profile Picture
    2,389 Super User 2025 Season 2 on at
    “User Not Found in F&O” Error with Power Pages Virtual Entities and Service Principal Configuration
    Hi
     
    can you close this thread as you already posted it twice and currently following the conversation in this issue: https://community.powerplatform.com/forums/thread/details/?threadid=d163ad69-2ecd-ef11-8ee9-7c1e52591095

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