Access Denied error while trying to Preview SSRS Repor
You might get a message "An error occurred during local report processing. Access Denied. (Exception from HRESULT: 0x80030005 (STG_E_ACCESSDENIED))" while you try to preview a report you developed under VS 2008 and which has been added to TFS or any source control.
The reason for this is due to the .data file associated to the report which is read only state. You can resolve this issue by either checking out the .data file or un-checking the read-only attribute of the file under local folder.
Here is a nice article post by about the issue