diff --git a/pkg/constants/constants.go b/pkg/constants/constants.go
index 3ac8e6c..5abfed7 100644
--- a/pkg/constants/constants.go
+++ b/pkg/constants/constants.go
@@ -12,19 +12,19 @@ const (
 
 	EnableNASTransfer   = true
 	NASOutputPath       = "\\\\HomeLabNAS\\dci\\streams"
-	NASUsername         = ""
-	NASPassword         = ""
+	NASUsername         = "NASAdmin"
+	NASPassword         = "s3tkY6tzA&KN6M"
 	TransferWorkerCount = 2
 	TransferRetryLimit  = 3
 	TransferTimeout     = 30 * time.Second
 	FileSettlingDelay   = 5 * time.Second
 	PersistencePath     = "../data/transfer_queue.json"
 	TransferQueueSize   = 100000
-	BatchSize           = 10
+	BatchSize           = 1000
 	ManifestPath        = "../data"
 
 	CleanupAfterTransfer = true
-	CleanupBatchSize     = 10
+	CleanupBatchSize     = 1000
 	RetainLocalHours     = 0
 
 	AutoProcess        = true
diff --git a/pkg/transfer/nas.go b/pkg/transfer/nas.go
index 65c38af..ecbc146 100644
--- a/pkg/transfer/nas.go
+++ b/pkg/transfer/nas.go
@@ -7,7 +7,9 @@ import (
 	"log"
 	"m3u8-downloader/pkg/nas"
 	"os"
+	"os/exec"
 	"path/filepath"
+	"strings"
 )
 
 type NASTransfer struct {
@@ -19,6 +21,12 @@ func NewNASTransfer(config nas.NASConfig) *NASTransfer {
 	nt := &NASTransfer{
 		config: config,
 	}
+
+	// Establish network connection with credentials before accessing the path
+	if err := nt.establishConnection(); err != nil {
+		log.Fatalf("Failed to establish network connection to %s: %v", nt.config.Path, err)
+	}
+
 	err := nt.ensureDirectoryExists(nt.config.Path)
 	if err != nil {
 		log.Fatalf("Failed to create directory %s: %v", nt.config.Path, err)
@@ -109,6 +117,47 @@ func (nt *NASTransfer) ensureDirectoryExists(path string) error {
 	return nil
 }
 
+func (nt *NASTransfer) establishConnection() error {
+	// Extract the network path (\\server\share) from the full path
+	networkPath := nt.extractNetworkPath(nt.config.Path)
+	if networkPath == "" {
+		// Local path, no authentication needed
+		return nil
+	}
+
+	log.Printf("Establishing network connection to %s with user %s", networkPath, nt.config.Username)
+
+	// Use Windows net use command to establish authenticated connection
+	var cmd *exec.Cmd
+	if nt.config.Username != "" && nt.config.Password != "" {
+		cmd = exec.Command("net", "use", networkPath, nt.config.Password, "/user:"+nt.config.Username, "/persistent:no")
+	} else {
+		cmd = exec.Command("net", "use", networkPath, "/persistent:no")
+	}
+
+	output, err := cmd.CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("failed to establish network connection: %w\nOutput: %s", err, string(output))
+	}
+
+	log.Printf("Network connection established successfully")
+	return nil
+}
+
+func (nt *NASTransfer) extractNetworkPath(fullPath string) string {
+	// Extract \\server\share from paths like \\server\share\folder\subfolder
+	if !strings.HasPrefix(fullPath, "\\\\") {
+		return "" // Not a UNC path
+	}
+
+	parts := strings.Split(fullPath[2:], "\\") // Remove leading \\
+	if len(parts) < 2 {
+		return "" // Invalid UNC path
+	}
+
+	return "\\\\" + parts[0] + "\\" + parts[1]
+}
+
 func (nt *NASTransfer) TestConnection() error {
 	testFile := filepath.Join(nt.config.Path, ".connection_test")
 
@@ -129,6 +178,26 @@ func (nt *NASTransfer) IsConnected() bool {
 	return nt.connected
 }
 
+// Disconnect removes the network connection
+func (nt *NASTransfer) Disconnect() error {
+	networkPath := nt.extractNetworkPath(nt.config.Path)
+	if networkPath == "" {
+		return nil // Local path, nothing to disconnect
+	}
+
+	cmd := exec.Command("net", "use", networkPath, "/delete")
+	output, err := cmd.CombinedOutput()
+	if err != nil {
+		log.Printf("Warning: failed to disconnect from %s: %v\nOutput: %s", networkPath, err, string(output))
+		// Don't return error since this is cleanup
+	} else {
+		log.Printf("Disconnected from network path: %s", networkPath)
+	}
+
+	nt.connected = false
+	return nil
+}
+
 // FileExists checks if a file already exists on the NAS and optionally verifies size
 func (nt *NASTransfer) FileExists(destinationPath string, expectedSize int64) (bool, error) {
 	fullDestPath := filepath.Join(nt.config.Path, destinationPath)
diff --git a/pkg/transfer/service.go b/pkg/transfer/service.go
index 03bc64e..d65a646 100644
--- a/pkg/transfer/service.go
+++ b/pkg/transfer/service.go
@@ -140,6 +140,11 @@ func (ts *TransferService) Shutdown(ctx context.Context) error {
 		return fmt.Errorf("Failed to force cleanup: %w", err)
 	}
 
+	// Disconnect from NAS
+	if err := ts.nas.Disconnect(); err != nil {
+		log.Printf("Warning: failed to disconnect from NAS: %v", err)
+	}
+
 	log.Println("Transfer service shut down")
 
 	return nil