System.UnauthorizedAccessException when accessing sharepoint 2013 REST API

Question

The REST API ("/_api" and "/_vti_bin/client.svc") doesn't work with anonymous access in 2013.

Getting System.UnauthorizedAccessException when accessing the above Sharepoint REST API.

stack trace : "{\"error\":{\"code\":\"-2147024891, System.UnauthorizedAccessException\",\"message\":{\"lang\":\"en-US\",\"value\":\"Access denied. You do not have permission to perform this action or access this resource.\"}}}"

Answer 1

Unfortunately, the REST services are only working for authenticated users. The REST API ("/_api" and "/_vti_bin/client.svc") doesn't work with anonymous access in 2013.

SharePoint 2013 APIs for anonymous and/or mobile access

SharePoint 2013 and anonymous access problem

Answer 2

Kindly use Digest in the header. if you are using _api call