Error: Cannot impersonate user for data source

An error has occurred during report processing. (rsProcessingAborted)

Cannot impersonate user for data source 'DataSource1'. (rsErrorImpersonatingUser)

Logon failed. (rsLogonFailed)

For more information about this error navigate to the report server on the local server machine, or enable remote errors

Any help would be greatly appreciated. Thank you.

Can you enable remote errors so we can see the detailed error message:

http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=230635&SiteID=1

sql