Connecting with an Odata connector in the Web Connector Package against Sharepoint may fail with:
HTTP error 403 (forbidden)
Environment:
Qlik Web Connectors
If both Windows and Forms authentication is enabled in Sharepoint the OData connection attempt is redirected to the Form, and windows authentication fails. The workaround for this is to either disable forms authentication or to use a REST or Web File connection instead to get your data.
In addition, review Qlik Office 365 Sharepoint Connector current permissions requested for Sharepoint Connector requirements.