diff --git a/config/locales/en.yml b/config/locales/en.yml
index a91e9f8..3f2bcac 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -2,6 +2,7 @@
 en:
   errors:
     check_update_failure: 'Checking update failed'
+    account_not_found_error: 'Your account was not found. Please create it from https://deploygate.com'
   command_builder:
     name: 'dg'
     description: 'Control DeployGate from your terminal.'
@@ -95,7 +96,7 @@ en:
           $ dg login
       print_login_user: 'User name: %{name}'
     login:
-      start_login_or_create_account:
+      start_login:
         welcome: 'Welcome to DeployGate!'
         email: 'Email: '
         check_account: 'Checking for your account...'
@@ -105,28 +106,6 @@ en:
           Could not log in to DeployGate.
           Please try again.
         success: 'Hello %{name}!'
-      create_account:
-        prompt: "Looks new to DeployGate. Let's set up your account, just choose your user name and password."
-        creating: 'Creating your account... '
-        error: |
-          Could not create your account.
-          Please try again.
-        success: 'done! Your account has been set up successfully.'
-      input_new_account_name:
-        input_user_name: 'Username: '
-        checking: 'Checking for availability... '
-        already_used_user_name: 'Sorry, %{user_name} was already taken. Please try again.'
-        success: 'Good, %{user_name} is available.'
-      input_new_account_password:
-        input_password: 'Password: '
-        input_same_password: 'Type the same password: '
-        error: "Passwords didn't match. Please type again."
-      check_terms:
-        terms_url: 'Terms of Service: https://deploygate.com/terms'
-        privacy_url: 'Privacy Policy: https://deploygate.com/terms/privacy'
-        note: "DeployGate properly manages your account information under GDPR, Japan's Personal Information Protection Act and our Privacy Policy."
-        text: 'I agree to the Terms of Service and Privacy Policy (y/n) '
-        error: 'You must agree to the Terms of Service and Privacy Policy.'
     logout:
       success: |
         Logout success!
diff --git a/lib/deploygate/api/v1/user.rb b/lib/deploygate/api/v1/user.rb
index 83ad661..75a3d4c 100644
--- a/lib/deploygate/api/v1/user.rb
+++ b/lib/deploygate/api/v1/user.rb
@@ -6,30 +6,6 @@ class User
         ENDPOINT = '/users'
 
         class << self
-          # @param [String] name
-          # @param [String] email
-          # @param [String] password
-          # @param [String] locale
-          # @return [Hash]
-          def create(name, email, password, locale = 'en')
-            res = Base.new().post(ENDPOINT, {:name => name, :email => email, :password => password, :locale => locale})
-
-            user_create_results = {
-                :error => res['error'],
-                :message => res['because']
-            }
-
-            results = res['results']
-            unless results.nil?
-              user_create_results.merge!({
-                                       :name => results['user']['name'],
-                                       :token => results['api_token']
-                                   })
-            end
-
-            user_create_results
-          end
-
           # @param [String] name
           # @param [String] email
           # @return [Boolean]
diff --git a/lib/deploygate/commands/add_devices.rb b/lib/deploygate/commands/add_devices.rb
index 83c419f..f81019c 100644
--- a/lib/deploygate/commands/add_devices.rb
+++ b/lib/deploygate/commands/add_devices.rb
@@ -11,7 +11,7 @@ def run(args, options)
 
           session = DeployGate::Session.new
           unless session.login?
-            Login.start_login_or_create_account()
+            Login.start_login()
             session = DeployGate::Session.new()
           end
 
diff --git a/lib/deploygate/commands/deploy.rb b/lib/deploygate/commands/deploy.rb
index 356949b..8f80685 100644
--- a/lib/deploygate/commands/deploy.rb
+++ b/lib/deploygate/commands/deploy.rb
@@ -6,7 +6,7 @@ class << self
         # @param [Array] args
         # @param [Commander::Command::Options] options
         def run(args, options)
-          Login.start_login_or_create_account() unless DeployGate::Session.new.login?
+          Login.start_login() unless DeployGate::Session.new.login?
 
           # push or build(android/ios)
           args.push(Dir.pwd) if args.empty?
diff --git a/lib/deploygate/commands/deploy/push.rb b/lib/deploygate/commands/deploy/push.rb
index 39569c5..fd6dbcc 100644
--- a/lib/deploygate/commands/deploy/push.rb
+++ b/lib/deploygate/commands/deploy/push.rb
@@ -13,7 +13,7 @@ class << self
           def upload(args, options)
             session = DeployGate::Session.new()
             unless session.login?
-              Login.start_login_or_create_account()
+              Login.start_login()
               session = DeployGate::Session.new()
             end
 
diff --git a/lib/deploygate/commands/login.rb b/lib/deploygate/commands/login.rb
index feea3b0..a8771ba 100644
--- a/lib/deploygate/commands/login.rb
+++ b/lib/deploygate/commands/login.rb
@@ -1,6 +1,8 @@
 module DeployGate
   module Commands
     class Login
+      class AccountNotFoundError < DeployGate::RavenIgnoreException; end
+
       class << self
 
         # @return [void]
@@ -8,31 +10,32 @@ def run(args, options)
           welcome()
 
           if options.terminal
-            start_login_or_create_account()
+            start_login()
           else
             DeployGate::BrowserLogin.new().start()
           end
         end
 
         def welcome
-          puts I18n.t('commands.login.start_login_or_create_account.welcome')
+          puts I18n.t('commands.login.start_login.welcome')
           print_deploygate_aa()
         end
 
         # @return [void]
-        def start_login_or_create_account
+        # @raise [AccountNotFoundError] emailに一致するUserが存在しないとき
+        def start_login
           puts ''
-          email = ask(I18n.t('commands.login.start_login_or_create_account.email'))
+          email = ask(I18n.t('commands.login.start_login.email'))
 
           puts ''
-          puts I18n.t('commands.login.start_login_or_create_account.check_account')
+          puts I18n.t('commands.login.start_login.check_account')
           if DeployGate::User.registered?('', email)
             puts ''
-            password = input_password(I18n.t('commands.login.start_login_or_create_account.input_password'))
+            password = input_password(I18n.t('commands.login.start_login.input_password'))
             puts ''
             start(email, password)
           else
-            create_account(email)
+            raise AccountNotFoundError, HighLine.color(I18n.t('errors.account_not_found_error'))
           end
         end
 
@@ -56,69 +59,6 @@ def login_success
           puts HighLine.color(I18n.t('commands.login.start.success', name: session.name), HighLine::GREEN)
         end
 
-        # @param [String] email
-        # @return [void]
-        def create_account(email)
-          puts I18n.t('commands.login.create_account.prompt')
-          puts ''
-
-          name = input_new_account_name()
-          puts ''
-
-          password = input_new_account_password()
-          puts ''
-
-          unless check_terms
-            puts HighLine.color(I18n.t('commands.login.check_terms.error'), HighLine::RED)
-            exit 1
-          end
-
-          print I18n.t('commands.login.create_account.creating')
-          if DeployGate::User.create(name, email, password).nil?
-            puts HighLine.color(I18n.t('commands.login.create_account.error'), HighLine::RED)
-            raise 'User create error'
-          else
-            puts HighLine.color(I18n.t('commands.login.create_account.success'), HighLine::GREEN)
-            start(email, password)
-          end
-        end
-
-        # @return [String]
-        def input_new_account_name
-          user_name = ask(I18n.t('commands.login.input_new_account_name.input_user_name'))
-          print I18n.t('commands.login.input_new_account_name.checking')
-
-          if DeployGate::User.registered?(user_name, '')
-            puts HighLine.color(I18n.t('commands.login.input_new_account_name.already_used_user_name', user_name: user_name), HighLine::RED)
-            return input_new_account_name()
-          else
-            puts HighLine.color(I18n.t('commands.login.input_new_account_name.success', user_name: user_name), HighLine::GREEN)
-            return user_name
-          end
-        end
-
-        # @return [String]
-        def input_new_account_password
-          password = input_password(I18n.t('commands.login.input_new_account_password.input_password'))
-          secound_password = input_password(I18n.t('commands.login.input_new_account_password.input_same_password'))
-
-          if password == secound_password
-            return password
-          else
-            puts HighLine.color(I18n.t('commands.login.input_new_account_password.error'), HighLine::RED)
-            return input_new_account_password()
-          end
-        end
-
-        # @return [boolean]
-        def check_terms
-          puts I18n.t('commands.login.check_terms.terms_url')
-          puts I18n.t('commands.login.check_terms.privacy_url')
-          puts I18n.t('commands.login.check_terms.note')
-          puts ''
-          HighLine.agree(I18n.t('commands.login.check_terms.text')) {|q| q.default = "n"}
-        end
-
         # @return [String]
         def input_password(message)
           ask(message) { |q| q.echo = "*" }
diff --git a/lib/deploygate/user.rb b/lib/deploygate/user.rb
index efa3f5e..51ea710 100644
--- a/lib/deploygate/user.rb
+++ b/lib/deploygate/user.rb
@@ -8,17 +8,6 @@ def initialize(name)
       @name = name
     end
 
-    # @param [String] name
-    # @param [String] email
-    # @param [String] password
-    # @return [DeployGate::User]
-    def self.create(name, email, password)
-      locale = Locale.current.language
-      results = DeployGate::API::V1::User.create(name, email, password, locale)
-      return if results[:error]
-      DeployGate::User.new(results[:name])
-    end
-
     # @param [String] name
     # @param [String] email
     # @return [Boolean]
diff --git a/spec/deploygate/api/v1/user_spec.rb b/spec/deploygate/api/v1/user_spec.rb
index f03ec46..7db9665 100644
--- a/spec/deploygate/api/v1/user_spec.rb
+++ b/spec/deploygate/api/v1/user_spec.rb
@@ -1,31 +1,4 @@
 describe DeployGate::API::V1::User do
-  describe "#create" do
-    it "success" do
-      name = 'test'
-      email = 'email'
-      password = 'password'
-      token = 'token'
-      response = {
-          :error => false,
-          :because => '',
-          :results => {
-              :user => {:name => name},
-              :api_token => token
-          }
-      }
-      stub_request(:post, "#{API_ENDPOINT}/users").
-          to_return(:body => response.to_json)
-
-      results = DeployGate::API::V1::User.create(name, email, password)
-      expect(results).to eq({
-                                :error => response[:error],
-                                :message => response[:because],
-                                :name => name,
-                                :token => token
-                            })
-    end
-  end
-
   describe "#registered?" do
     it "registered" do
       name = 'test'