So I am trying to pass windows authentication from sharepoint into a tab withing a webpart that loads reporting services. Right now the users log into Sharepoint and when they click on the reporting tab within a webpart they are prompted to login again. I can't pass session variables because the reporting services is outside of the webpart and is being hosted within an Iframe. I don�t know if it is possible to impersonate or store the login credentials from Sharepoint temporally and send it to the Reporting Services log in prompt. Any help is greatly appreciated.
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