diff --git a/google_guest_agent/accounts_unix.go b/google_guest_agent/accounts_unix.go
index 701f9f1..a4ad7f9 100644
--- a/google_guest_agent/accounts_unix.go
+++ b/google_guest_agent/accounts_unix.go
@@ -23,20 +23,28 @@ import (
 	"syscall"
 )
 
-func getUID(path string) string {
+func getUIDAndGID(path string) (string, string) {
 	if dir, err := os.Stat(path); err == nil {
 		if stat, ok := dir.Sys().(*syscall.Stat_t); ok {
-			return fmt.Sprintf("%d", stat.Uid)
+			return fmt.Sprintf("%d", stat.Uid), fmt.Sprintf("%d", stat.Gid)
 		}
 	}
-	return ""
+	return "", ""
 }
 
-func createUser(username, uid string) error {
+func createUser(username, uid, gid string) error {
 	useradd := config.Section("Accounts").Key("useradd_cmd").MustString("useradd -m -s /bin/bash -p * {user}")
 	if uid != "" {
 		useradd = fmt.Sprintf("%s -u %s", useradd, uid)
 	}
+	if gid != "" {
+		groupadd := config.Section("Accounts").Key("groupadd_cmd").MustString("groupadd {group}")
+		groupadd = fmt.Sprintf("%s -g %s", groupadd, gid)
+		if err := runCmd(createUserGroupCmd(groupadd, "", username)); err != nil {
+			return err
+		}
+		useradd = fmt.Sprintf("%s -g %s", useradd, gid)
+	}
 	return runCmd(createUserGroupCmd(useradd, username, ""))
 }
 
diff --git a/google_guest_agent/accounts_windows.go b/google_guest_agent/accounts_windows.go
index d9fefd5..9398214 100644
--- a/google_guest_agent/accounts_windows.go
+++ b/google_guest_agent/accounts_windows.go
@@ -137,7 +137,7 @@ func addUserToGroup(username, group string) error {
 	return nil
 }
 
-func createUser(username, pwd string) error {
+func createUser(username, pwd, _ string) error {
 	uPtr, err := syscall.UTF16PtrFromString(username)
 	if err != nil {
 		return fmt.Errorf("error encoding username to UTF16: %v", err)
@@ -183,6 +183,6 @@ func userExists(name string) (bool, error) {
 	return true, nil
 }
 
-func getUID(path string) string {
-	return ""
+func getUIDAndGID(path string) (string, string) {
+	return "", ""
 }
diff --git a/google_guest_agent/non_windows_accounts.go b/google_guest_agent/non_windows_accounts.go
index 04f8734..9ff9ab5 100644
--- a/google_guest_agent/non_windows_accounts.go
+++ b/google_guest_agent/non_windows_accounts.go
@@ -345,12 +345,12 @@ func createUserGroupCmd(cmd, user, group string) *exec.Cmd {
 // createGoogleUser creates a Google managed user account if needed and adds it
 // to the configured groups.
 func createGoogleUser(user string) error {
-	var uid string
+	var uid, gid string
 	if config.Section("Accounts").Key("reuse_homedir").MustBool(false) {
-		uid = getUID(fmt.Sprintf("/home/%s", user))
+		uid, gid = getUIDAndGID(fmt.Sprintf("/home/%s", user))
 	}
 
-	if err := createUser(user, uid); err != nil {
+	if err := createUser(user, uid, gid); err != nil {
 		return err
 	}
 	groups := config.Section("Accounts").Key("groups").MustString("adm,dip,docker,lxd,plugdev,video")
diff --git a/google_guest_agent/windows_accounts.go b/google_guest_agent/windows_accounts.go
index dc23831..e64f0c8 100644
--- a/google_guest_agent/windows_accounts.go
+++ b/google_guest_agent/windows_accounts.go
@@ -139,7 +139,7 @@ func (k windowsKey) createOrResetPwd() (*credsJSON, error) {
 		}
 	} else {
 		logger.Infof("Creating user %s", k.UserName)
-		if err := createUser(k.UserName, pwd); err != nil {
+		if err := createUser(k.UserName, pwd, ""); err != nil {
 			return nil, fmt.Errorf("error running createUser: %v", err)
 		}
 		if k.AddToAdministrators == nil || *k.AddToAdministrators == true {