diff --git a/UBCopy/App.config b/UBCopy/App.config
index d97727c..1548a52 100644
--- a/UBCopy/App.config
+++ b/UBCopy/App.config
@@ -8,7 +8,7 @@
 <log4net>
   <root>
     <level value="ERROR" />
-    <appender-ref ref="RollingFileAppender" />
+    <!--<appender-ref ref="RollingFileAppender" />-->
     <!--<appender-ref ref="FileAppender" />-->
     <appender-ref ref="ColoredConsoleAppender" />-->
   </root>
diff --git a/UBCopy/AsyncUnbuffCopy.cs b/UBCopy/AsyncUnbuffCopy.cs
index 48fd326..1b8f21a 100644
--- a/UBCopy/AsyncUnbuffCopy.cs
+++ b/UBCopy/AsyncUnbuffCopy.cs
@@ -104,7 +104,7 @@ private void AsyncReadFile()
             //open input file
             try
             {
-                _infile = new FileStream(_inputfile, FileMode.Open, FileAccess.Read, FileShare.None, CopyBufferSize,
+                _infile = new FileStream(_inputfile, FileMode.Open, FileAccess.Read, FileShare.Read, CopyBufferSize,
                                          FileFlagNoBuffering | FileOptions.SequentialScan);
             }
             catch (Exception e)
diff --git a/UBCopy/AsyncUnbuffCopyStatic.cs b/UBCopy/AsyncUnbuffCopyStatic.cs
index 3996bd1..6a5b0ea 100644
--- a/UBCopy/AsyncUnbuffCopyStatic.cs
+++ b/UBCopy/AsyncUnbuffCopyStatic.cs
@@ -109,7 +109,7 @@ private static void AsyncReadFile()
             //open input file
             try
             {
-                _infile = new FileStream(_inputfile, FileMode.Open, FileAccess.Read, FileShare.None, CopyBufferSize,
+                _infile = new FileStream(_inputfile, FileMode.Open, FileAccess.Read, FileShare.Read, CopyBufferSize,
                                          FileFlagNoBuffering | FileOptions.SequentialScan);
             }
             catch (Exception e)
diff --git a/UBCopy/SynchronousUnbufferedCopy.cs b/UBCopy/SynchronousUnbufferedCopy.cs
index c5790ac..b12e3be 100644
--- a/UBCopy/SynchronousUnbufferedCopy.cs
+++ b/UBCopy/SynchronousUnbufferedCopy.cs
@@ -31,7 +31,7 @@ public static int SyncCopyFileUnbuffered(string inputfile, string outputfile, in
             try
             {
                 infile = new FileStream(inputfile,
-                                            FileMode.Open, FileAccess.Read, FileShare.None, buffersize,
+                                            FileMode.Open, FileAccess.Read, FileShare.Read, buffersize,
                                             FileFlagNoBuffering | FileOptions.SequentialScan);
 
             }