.ExternalClass .EC_hmmessage P {padding:0px;} .ExternalClass body.EC_hmmessage {font-size:10pt;font-family:Verdana;} I am trying to log to a Network Drive using a RollingFileAppender but am having problems.
 
When I set the file parameter value to a UNC value (\\servername\sharename\Alert.txt) it works fine
 
However, when I try to set it to a mapped drive value which refers to the same path it fails.
 
The internal debug is showing this:
 
log4net:ERROR [RollingFileAppender] No output stream or file set for the appender named [TDALog].
log4net: FileAppender: Opening file for writing [T:\Alert.txt] append [True]
log4net:ERROR [RollingFileAppender] Unable to acquire lock on file T:\Alert.txt. Could not find a part of the path 'T:\'.
log4net:ERROR [RollingFileAppender] OpenFile(T:\Alert.txt,True) call failed.
log4net.Appender.FileAppender+LockingStream+LockStateException: The file is not currently locked
   at log4net.Appender.FileAppender.LockingStream.get_CanWrite()
   at System.IO.StreamWriter..ctor(Stream stream, Encoding encoding, Int32 bufferSize)
   at System.IO.StreamWriter..ctor(Stream stream, Encoding encoding)
   at log4net.Appender.FileAppender.OpenFile(String fileName, Boolean append)
   at log4net.Appender.RollingFileAppender.OpenFile(String fileName, Boolean append)
   at log4net.Appender.FileAppender.SafeOpenFile(String fileName, Boolean append)
log4net:ERROR [RollingFileAppender] No output stream or file set for the appender named [TDALog].
 
When I use UNC for the same file it works okay:
 
log4net: FileAppender: Opening file for writing [\\uncdrive\share\Alert.txt] append [True]
log4net: XmlHierarchyConfigurator: Created Appender [TDALog]
log4net: XmlHierarchyConfigurator: Adding appender named [TDALog] to logger [root].
log4net: XmlHierarchyConfigurator: Retrieving an instance of log4net.Repository.Logger for logger [tda].
log4net: XmlHierarchyConfigurator: Setting [trustda] additivity to [True].
log4net: XmlHierarchyConfigurator: Logger [trustda] Level string is [DEBUG].
log4net: XmlHierarchyConfigurator: Logger [trustda] level set to [name="DEBUG",value=30000].
log4net: XmlHierarchyConfigurator: Adding appender named [TDALog] to logger [tda].
 
Any ideas?
 
We would only use UNC as a last resort because the application is going to be distributed to multiple sites which all use a common drive mapping letter


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