HTTPS Site InfoPath Issue : You do not have permissions to access a web service that provides data required for this form to function correctly
Also, if you look at the Event Viewer, you might find the below issue: An operation failed because the following certificate has validation errors..... It could look something like this: The solution to fix this issue is to add the root certificates of the SSL certificate to the SharePoint 2010: Open the SharePoint 2010 Central Administration Open the ‘Manage Trust’ section under the ‘Security’ Tab Add the SSL Certificate and all the Root Certificates of the certificate chain. The best way to import the certificates is to store them in base-64 files with the file extension *.cer Now check if the SharePoint 2010 Portal is working via the Https url