SSRS Export Feature Causes an "Object Moved" Error
I ran into the following issue with SSRS 2005 where some users would run a report and then try to export it into a different format (Excel, PDF, etc) using the SSRS web site tool bar resulting in an "Object Moved" error. Some would see the error in a pop-up message box or as an ASP.Net Server Error page after clicking the Open or Save As button on the download dialog (depending on what IE browser version they were using).
After some investigating a lot of things (including spending a lot of time looking at server logs) it was discovered that this isn't a server problem at all. Instead it is an error that occurs for some users based on their IE settings. Since the SSRS site was being run under an SSL certificate when the following IE setting is enabled it can cause the "object moved" error when a user tries to download the report: "Do not save encrypted pages to disk". Go to the advanced tab in IE settings and uncheck this option if you are experiencing the error when exporting reports in an SSL protected SSRS web site.