Not able to create the client secret key in the developers portal

The error indicates that the portal failed while generating the client secret, not that the concept or configuration is wrong. The supported and reliable way to create a client secret for a Microsoft Entra application is through the Azure portal under App registrations.

Use the following steps as a workaround instead of the failing “developers portal” flow:

1. Sign in to the Azure portal and go to Microsoft Entra ID.
2. Select App registrations and choose the application for which the secret is needed.
3. Go to Certificates & secrets.
4. Under Client secrets, select New client secret (or Add a client secret depending on the experience).
5. Enter a description, choose an expiration period, and select Add.
6. Copy the Value of the new client secret immediately and store it securely. It is shown only once.

If the error persists specifically in the developers portal but the above steps work, use the secret created in Azure portal in place of the one the developers portal was trying to create, and consider opening a support ticket for the developers portal issue.

References:

• Quickstart: Call a web API in a sample daemon app (external)
• Set up Power BI Embedded
• Securely access products and APIs with Microsoft Entra applications
• Client secret key is expired error occurs when deploying or terminating virtual machines