diff --git a/assets/translations/en.json b/assets/translations/en.json
index 382988e07a..0b9b3f5eb5 100644
--- a/assets/translations/en.json
+++ b/assets/translations/en.json
@@ -204,7 +204,6 @@
     "6": "Delete the server and volume?",
     "7": "Yes",
     "8": "Remove task"
-
   },
   "timer": {
     "sec": "{} sec"
@@ -216,10 +215,11 @@
     "empty": "No jobs"
   },
   "validations": {
-    "required": "required",
-    "invalid_format": "invalid format",
+    "required": "Required",
+    "invalid_format": "Invalid format",
     "root_name": "User name cannot be 'root'",
-    "key_format": "invalid key format",
-    "length": "length is [] shoud be {}"
+    "key_format": "Invalid key format",
+    "length": "Length is [] shoud be {}",
+    "user_alredy_exist": "Already exists"
   }
 }
\ No newline at end of file
diff --git a/assets/translations/ru.json b/assets/translations/ru.json
index 5fda5fca77..bc89ab19e5 100644
--- a/assets/translations/ru.json
+++ b/assets/translations/ru.json
@@ -216,9 +216,10 @@
   },
   "validations": {
     "required": "обязательное поле",
-    "invalid_format": "неверный формат",
+    "invalid_format": "Неверный формат",
     "root_name": "Имя пользователя не может быть'root'",
-    "key_format": "неверный формат",
-    "length": "Длина строки [] должна быть {}"
+    "key_format": "Неверный формат",
+    "length": "Длина строки [] должна быть {}",
+    "user_alredy_exist": "Имя уже используется"
   }
 }
\ No newline at end of file
diff --git a/lib/logic/cubit/forms/user/user_form_cubit.dart b/lib/logic/cubit/forms/user/user_form_cubit.dart
index 5db9ad6f0a..a30b90f820 100644
--- a/lib/logic/cubit/forms/user/user_form_cubit.dart
+++ b/lib/logic/cubit/forms/user/user_form_cubit.dart
@@ -9,7 +9,8 @@ import 'package:easy_localization/easy_localization.dart';
 
 class UserFormCubit extends FormCubit {
   UserFormCubit({
-    required this.usersCubit,
+    required this.jobsCubit,
+    required List<User> users,
     User? user,
   }) {
     var isEdit = user != null;
@@ -20,6 +21,10 @@ class UserFormCubit extends FormCubit {
     login = FieldCubit(
       initalValue: isEdit ? user!.login : '',
       validations: [
+        ValidationModel(
+          (login) => users.any((user) => user.login == login),
+          'validations.user_alredy_exist'.tr(),
+        ),
         RequiredStringValidation('validations.required'.tr()),
         ValidationModel<String>(
             (s) => userRegExp.hasMatch(s), 'validations.invalid_format'.tr()),
@@ -44,7 +49,7 @@ class UserFormCubit extends FormCubit {
       login: login.state.value,
       password: password.state.value,
     );
-    usersCubit.addJob(CreateUserJob(user: user));
+    jobsCubit.addJob(CreateUserJob(user: user));
   }
 
   late FieldCubit<String> login;
@@ -54,5 +59,5 @@ class UserFormCubit extends FormCubit {
     password.externalSetValue(genPass());
   }
 
-  late JobsCubit usersCubit;
+  final JobsCubit jobsCubit;
 }
diff --git a/lib/ui/pages/users/new_user.dart b/lib/ui/pages/users/new_user.dart
index ed35c2e346..4f6da178a6 100644
--- a/lib/ui/pages/users/new_user.dart
+++ b/lib/ui/pages/users/new_user.dart
@@ -9,8 +9,24 @@ class _NewUser extends StatelessWidget {
 
     return BrandBottomSheet(
       child: BlocProvider(
-        create: (context) =>
-            UserFormCubit(usersCubit: context.read<JobsCubit>()),
+        create: (context) {
+          var jobCubit = context.read<JobsCubit>();
+          var jobState = jobCubit.state;
+          var users = <User>[];
+          users.addAll(context.read<UsersCubit>().state.users);
+          if (jobState is JobsStateWithJobs) {
+            var jobs = jobState.jobList;
+            jobs.forEach((job) {
+              if (job is CreateUserJob) {
+                users.add(job.user);
+              }
+            });
+          }
+          return UserFormCubit(
+            jobsCubit: jobCubit,
+            users: users,
+          );
+        },
         child: Builder(builder: (context) {
           var formCubitState = context.watch<UserFormCubit>().state;
 
diff --git a/lib/ui/pages/users/users.dart b/lib/ui/pages/users/users.dart
index 46d0b1845e..da994ef962 100644
--- a/lib/ui/pages/users/users.dart
+++ b/lib/ui/pages/users/users.dart
@@ -6,6 +6,7 @@ import 'package:selfprivacy/logic/cubit/app_config/app_config_cubit.dart';
 import 'package:selfprivacy/logic/cubit/forms/user/user_form_cubit.dart';
 import 'package:selfprivacy/logic/cubit/jobs/jobs_cubit.dart';
 import 'package:selfprivacy/logic/cubit/users/users_cubit.dart';
+import 'package:selfprivacy/logic/models/jobs/job.dart';
 import 'package:selfprivacy/logic/models/user.dart';
 import 'package:selfprivacy/ui/components/brand_bottom_sheet/brand_bottom_sheet.dart';
 import 'package:selfprivacy/ui/components/brand_button/brand_button.dart';