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Help with connecting to Microsoft Dynamics 365

  • May 18, 2026
  • 2 replies
  • 41 views
mnash
Contributor
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Hi,

Following the instructions: How to Connect to Microsoft Dataverse using FME Form – FME Support Center

I can successfully authenticate to Dynamics 365. However, when I create a Reader and attempt to List the available tables, I get HTTPError: 404.

The error message suggests the URL is being incorrectly formed by including “/user_impersonation offline_access/”

<domain> is redacted real address….

Error URL:

https://<domain>.crm6.dynamics.com/user_impersonation offline_access/api/data/v9.2/EntityDefinitions?$select=LogicalName,EntitySetName,DisplayName,PrimaryIdAttribute&$filter=IsValidForAdvancedFind+eq+true

Expected URL:

https://<domain>.crm6.dynamics.com/api/data/v9.2/EntityDefinitions?$select=LogicalName,EntitySetName,DisplayName,PrimaryIdAttribute&$filter=IsValidForAdvancedFind+eq+true

All assistance gratefully received….

    2 replies

    j.botterill
    Influencer
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    • j.botterillInfluencer
    • Influencer
    • May 19, 2026

    error 404 speaks to an incorrect API url/endpoint. You can try updating the reader, take a look is a newer version is in the transaction log and try again. Otherwise I think you should reach out to Safe Support and lodge a request

      mnash
      Contributor
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      • mnashContributor
      • Author
      • Contributor
      • May 20, 2026

      Thanks. I have logged a Support ticket and waiting for response.

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