diff --git a/commands/prepare.go b/commands/prepare.go
index d3daf9bb55..ff664e430c 100644
--- a/commands/prepare.go
+++ b/commands/prepare.go
@@ -20,6 +20,7 @@ package commands
 import (
 	"flag"
 	"os"
+	"path/filepath"
 
 	"github.com/Sirupsen/logrus"
 	c "github.com/future-architect/vuls/config"
@@ -72,7 +73,9 @@ func (p *PrepareCmd) SetFlags(f *flag.FlagSet) {
 
 	f.BoolVar(&p.debug, "debug", false, "debug mode")
 
-	defaultConfPath := os.Getenv("PWD") + "/config.toml"
+	wd, _ := os.Getwd()
+
+	defaultConfPath := filepath.Join(wd, "config.toml")
 	f.StringVar(&p.configPath, "config", defaultConfPath, "/path/to/toml")
 
 	f.BoolVar(
diff --git a/commands/scan.go b/commands/scan.go
index 272a29f52d..c586f72296 100644
--- a/commands/scan.go
+++ b/commands/scan.go
@@ -20,6 +20,7 @@ package commands
 import (
 	"flag"
 	"os"
+	"path/filepath"
 
 	"github.com/Sirupsen/logrus"
 	c "github.com/future-architect/vuls/config"
@@ -87,10 +88,12 @@ func (p *ScanCmd) SetFlags(f *flag.FlagSet) {
 	f.BoolVar(&p.debug, "debug", false, "debug mode")
 	f.BoolVar(&p.debugSQL, "debug-sql", false, "SQL debug mode")
 
-	defaultConfPath := os.Getenv("PWD") + "/config.toml"
+	wd, _ := os.Getwd()
+
+	defaultConfPath := filepath.Join(wd, "config.toml")
 	f.StringVar(&p.configPath, "config", defaultConfPath, "/path/to/toml")
 
-	defaultDBPath := os.Getenv("PWD") + "/vuls.sqlite3"
+	defaultDBPath := filepath.Join(wd, "vuls.sqlite3")
 	f.StringVar(&p.dbpath, "dbpath", defaultDBPath, "/path/to/sqlite3")
 
 	defaultURL := "http://127.0.0.1:1323"
diff --git a/commands/tui.go b/commands/tui.go
index 927c29f629..610e57fd4a 100644
--- a/commands/tui.go
+++ b/commands/tui.go
@@ -21,6 +21,7 @@ import (
 	"flag"
 	"fmt"
 	"os"
+	"path/filepath"
 
 	c "github.com/future-architect/vuls/config"
 	"github.com/future-architect/vuls/report"
@@ -54,7 +55,9 @@ func (p *TuiCmd) SetFlags(f *flag.FlagSet) {
 	//  f.StringVar(&p.lang, "lang", "en", "[en|ja]")
 	f.BoolVar(&p.debugSQL, "debug-sql", false, "debug SQL")
 
-	defaultDBPath := os.Getenv("PWD") + "/vuls.sqlite3"
+	wd, _ := os.Getwd()
+
+	defaultDBPath := filepath.Join(wd, "vuls.sqlite3")
 	f.StringVar(&p.dbpath, "dbpath", defaultDBPath,
 		fmt.Sprintf("/path/to/sqlite3 (default: %s)", defaultDBPath))
 }
diff --git a/report/logrus.go b/report/logrus.go
index 4a663e985b..cba0ed781a 100644
--- a/report/logrus.go
+++ b/report/logrus.go
@@ -19,6 +19,8 @@ package report
 
 import (
 	"os"
+	"path/filepath"
+	"runtime"
 
 	"github.com/Sirupsen/logrus"
 	"github.com/future-architect/vuls/models"
@@ -31,6 +33,9 @@ type LogrusWriter struct {
 
 func (w LogrusWriter) Write(scanResults []models.ScanResult) error {
 	path := "/var/log/vuls/report.log"
+	if runtime.GOOS == "windows" {
+		path = filepath.Join(os.Getenv("APPDATA"), "vuls", "report.log")
+	}
 	f, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
 	if err != nil {
 		return err
diff --git a/scan/sshutil.go b/scan/sshutil.go
index df39c49aae..d9ea4fbc03 100644
--- a/scan/sshutil.go
+++ b/scan/sshutil.go
@@ -122,7 +122,7 @@ func sshExec(c conf.ServerInfo, cmd string, sudo bool, log ...*logrus.Entry) (re
 	} else {
 		logger = log[0]
 	}
-
+	c.SudoOpt.ExecBySudo = true
 	var err error
 	if sudo && c.User != "root" {
 		switch {
diff --git a/util/logutil.go b/util/logutil.go
index 008e65f725..25cbc58d23 100644
--- a/util/logutil.go
+++ b/util/logutil.go
@@ -20,6 +20,8 @@ package util
 import (
 	"fmt"
 	"os"
+	"path/filepath"
+	"runtime"
 
 	"github.com/Sirupsen/logrus"
 	"github.com/rifflock/lfshook"
@@ -40,6 +42,9 @@ func NewCustomLogger(c config.ServerInfo) *logrus.Entry {
 
 	// File output
 	logDir := "/var/log/vuls"
+	if runtime.GOOS == "windows" {
+		logDir = filepath.Join(os.Getenv("APPDATA"), "vuls")
+	}
 	if _, err := os.Stat(logDir); os.IsNotExist(err) {
 		if err := os.Mkdir(logDir, 0666); err != nil {
 			logrus.Errorf("Failed to create log directory: %s", err)