How to fix a missing SharePoint Online Client Extensibility Web Application Principal Helper app registration in your tenant?

Question

One of our customers is missing the SharePoint Online Client Extensibility Web Application Principal Helper app registration in Microsoft Entra. The SharePoint Online Client Extensibility Web Application Principal however is available.

Now Authorization requests from within an SPFx webpart to Microsoft Graph are failing, a 500 error is retrieved when requesting a token.

On all other tenants, both app registrations are available and Graph calls from within the SPFx are working fine.

Does anyone know how to (re)create this Helper app?

Answer 1

Hi @Ad van den Berg,

In SharePoint Framework code you make Azure AD permission requests by adding a webApiPermissionRequests element inside the config/package-solution.json file.

"webApiPermissionRequests": [
  {
    "resource": "Microsoft Graph",
    "scope": "User.ReadBasic.All"
  }
],

Then you can redeploy the app package, the admin can approve the permission requests using the API access page in the SharePoint Admin Center.

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