diff --git a/controllers/ldap.go b/controllers/ldap.go
index 2f307821..d7452d4c 100644
--- a/controllers/ldap.go
+++ b/controllers/ldap.go
@@ -27,10 +27,10 @@ type LdapResp struct {
 	ExistUuids []string          `json:"existUuids"`
 }
 
-//type LdapRespGroup struct {
+// type LdapRespGroup struct {
 //	GroupId   string
 //	GroupName string
-//}
+// }
 
 type LdapSyncResp struct {
 	Exist  []object.LdapUser `json:"exist"`
@@ -61,18 +61,18 @@ func (c *ApiController) GetLdapUsers() {
 	}
 	defer conn.Close()
 
-	//groupsMap, err := conn.GetLdapGroups(ldapServer.BaseDn)
-	//if err != nil {
+	// groupsMap, err := conn.GetLdapGroups(ldapServer.BaseDn)
+	// if err != nil {
 	//  c.ResponseError(err.Error())
 	//	return
-	//}
+	// }
 
-	//for _, group := range groupsMap {
+	// for _, group := range groupsMap {
 	//	resp.Groups = append(resp.Groups, LdapRespGroup{
 	//		GroupId:   group.GidNumber,
 	//		GroupName: group.Cn,
 	//	})
-	//}
+	// }
 
 	users, err := conn.GetLdapUsers(ldapServer)
 	if err != nil {
@@ -269,7 +269,11 @@ func (c *ApiController) SyncLdapUsers() {
 		return
 	}
 
-	exist, failed, _ := object.SyncLdapUsers(owner, users, ldapId)
+	exist, failed, err := object.SyncLdapUsers(owner, users, ldapId)
+	if err != nil {
+		c.ResponseError(err.Error())
+		return
+	}
 
 	c.ResponseOk(&LdapSyncResp{
 		Exist:  exist,
diff --git a/object/ldap_autosync.go b/object/ldap_autosync.go
index 8c80a8dc..591abe4f 100644
--- a/object/ldap_autosync.go
+++ b/object/ldap_autosync.go
@@ -106,6 +106,12 @@ func (l *LdapAutoSynchronizer) syncRoutine(ldap *Ldap, stopChan chan struct{}) e
 		}
 
 		existed, failed, err := SyncLdapUsers(ldap.Owner, AutoAdjustLdapUser(users), ldap.Id)
+		if err != nil {
+			conn.Close()
+			logs.Warning(fmt.Sprintf("autoSync failed for %s, error %s", ldap.Id, err))
+			continue
+		}
+
 		if len(failed) != 0 {
 			logs.Warning(fmt.Sprintf("ldap autosync,%d new users,but %d user failed during :", len(users)-len(existed)-len(failed), len(failed)), failed)
 			logs.Warning(err.Error())
diff --git a/object/user.go b/object/user.go
index 3680d59d..911751f6 100644
--- a/object/user.go
+++ b/object/user.go
@@ -834,6 +834,16 @@ func AddUser(user *User) (bool, error) {
 		return false, fmt.Errorf("the organization: %s is not found", user.Owner)
 	}
 
+	if user.Owner != "built-in" {
+		applicationCount, err := GetOrganizationApplicationCount(organization.Owner, organization.Name, "", "")
+		if err != nil {
+			return false, err
+		}
+		if applicationCount == 0 {
+			return false, fmt.Errorf("The organization: %s should have one application at least", organization.Owner)
+		}
+	}
+
 	if organization.DefaultPassword != "" && user.Password == "123" {
 		user.Password = organization.DefaultPassword
 	}