we are currently unable to provision new Dynamics 365 trial environments.
The issue affects at least the following products:
- Dynamics 365 Customer Insights
- Dynamics 365 Sales
During the Customer Insights trial registration, the following request fails:
POST https://api.protean.wps.microsoft.com/api/v1/ProvisionTrialEnvironment/dynamics/marketing/?language=de-deThe response is:
HTTP 403 Forbidden{
"analyticsData": {
"code": "NeptuneFailure"
}
}The same error also occurs when attempting to create a Dynamics 365 Sales trial.
We have reproduced the issue under several independent conditions:
- with different user accounts,
- with accounts belonging to different Microsoft Entra tenants,
- on a corporate computer and a completely separate private computer,
- through different internet connections,
- with and without the corporate VPN,
- with different browsers and browser sessions.
General access to the Power Platform Admin Center works correctly. No existing or stuck trial environment is visible in the affected tenant, and no related incident is currently shown in Power Platform Service Health.
Our tenant already has the Dynamics 365 Customer Insights Self-Service license, which is assigned to several users. This setup has existed for a long time and has worked successfully in the past. We have repeatedly created new Customer Insights trial environments through the normal trial registration process without having to recreate or reconfigure the Microsoft Entra tenant.
The current problem occurs specifically during the provisioning of a new trial environment.
Recent registration error IDs include:
8de7db71-b164-4e0c-a38b-b4adf28f3528
07f01b6e-a705-42b3-bc23-902c2b779706Based on the tests across multiple products, tenants, devices, and networks, this appears to be a server-side issue in the shared Dynamics 365 trial provisioning service, possibly within the Protean/Neptune backend.

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