This might be a permission issue but cant seem to find out where else i need to add permissions for this person. They have a report created by someone else on the system. i can add a subscription for it and have it emailed to me with attachment and works perfectly. when this user adds the subscription and has the attachment added it gets an error "Failure sending mail: The report server has encountered a configuration error. Mail will not be resent.", if there is not attachment and the link is sent no error appears.Michael Duhon

Check if this helps: A call to the AuthzInitializeContextFromSid API function fails during the delivery of an e-mail subscription in SQL Server Reporting Services

Perfect, just went into the reporting services configuration manager and changed the Report Server Service Account from Local Service to a Domain account and emails starting working with attachments! thanksMichael Duhon

Actually after a day after adding a windows account to the service startup account it sends the reports as attachments just fine but other user's can't log into the site anymore. This web link helped me fix the issue now attachments are working and users can access the Reports web page. http://msdn.microsoft.com/en-us/library/cc281253.aspxMichael Duhon