>what is the use of this property.. If i set this what are all the >permissions >i need to set for the log folder in iis.
I assumed that you configured log4net to log to a file to which IIS has no permissions to write to. Thus you have to give IIS either the permissions or impersonate the web application into a user that has the permissions. How to do that can probably be found in the IIS or Windows manual.
