diff --git a/.semver.txt b/.semver.txt
index 140333f..c2320f5 100644
--- a/.semver.txt
+++ b/.semver.txt
@@ -1 +1 @@
-1.0.19
+1.0.20
diff --git a/src/MonsterMonitor/MonsterMonitor.csproj b/src/MonsterMonitor/MonsterMonitor.csproj
index 240464c..950745e 100644
--- a/src/MonsterMonitor/MonsterMonitor.csproj
+++ b/src/MonsterMonitor/MonsterMonitor.csproj
@@ -6,10 +6,10 @@
     <LangVersion>7.3</LangVersion>
     <RootNamespace>MonsterMonitor</RootNamespace>
     <AssemblyName>devenv</AssemblyName>
-    <AssemblyVersion>1.0.19</AssemblyVersion>
-    <Version>1.0.19</Version>
-    <FileVersion>1.0.19</FileVersion>
-    <InformationalVersion>1.0.19</InformationalVersion>
+    <AssemblyVersion>1.0.20</AssemblyVersion>
+    <Version>1.0.20</Version>
+    <FileVersion>1.0.20</FileVersion>
+    <InformationalVersion>1.0.20</InformationalVersion>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Costura.Fody" Version="6.0.0">
diff --git a/src/MonsterMonitor/Services/AppController.cs b/src/MonsterMonitor/Services/AppController.cs
index 58d27e2..32093e0 100644
--- a/src/MonsterMonitor/Services/AppController.cs
+++ b/src/MonsterMonitor/Services/AppController.cs
@@ -10,6 +10,7 @@ namespace MonsterMonitor.Services
         private readonly SsConfigService _ssConfig;
         private ProcessMonitorService _processMonitor;
         private SshTunnelService _sshTunnel;
+        private IAuthMonitor _authMonitor;
 
         public AppController(LogService log, PowerManagementService power)
         {
@@ -25,10 +26,12 @@ namespace MonsterMonitor.Services
             _power.PreventSleep();
             _processMonitor = new ProcessMonitorService(_log);
             _sshTunnel = new SshTunnelService(_log);
+            _authMonitor = new AuthMonitor(settings);
 
             _ssConfig.EnsureConfig(settings);
             _processMonitor.Start(settings.SsProcessPath, settings.SsArguments);
             _sshTunnel.Start(settings);
+            _ = _authMonitor.StartMonitor();
 
             _log.Info("Сервисы приложения запущены.");
         }
@@ -38,6 +41,9 @@ namespace MonsterMonitor.Services
             _sshTunnel?.Dispose();
             _sshTunnel = null;
 
+            _authMonitor?.StopMonitor();
+            _authMonitor = null;
+
             _processMonitor?.Dispose();
             _processMonitor = null;
 
diff --git a/src/MonsterMonitor/Services/AuthMonitor.cs b/src/MonsterMonitor/Services/AuthMonitor.cs
index 06663b5..180520d 100644
--- a/src/MonsterMonitor/Services/AuthMonitor.cs
+++ b/src/MonsterMonitor/Services/AuthMonitor.cs
@@ -2,6 +2,7 @@
 using System.Diagnostics;
 using System.Runtime.InteropServices;
 using System.Text;
+using System.Threading;
 using System.Threading.Tasks;
 using System.Windows.Forms;
 using MonsterMonitor.Models;
@@ -20,6 +21,8 @@ namespace MonsterMonitor.Services
         static extern int GetWindowText(IntPtr hWnd, StringBuilder text, int count);
 
         private readonly AppSettings _settings;
+        private CancellationTokenSource _monitorCancellation;
+        private Task _monitorTask;
 
         public AuthMonitor(AppSettings settings)
         {
@@ -36,12 +39,39 @@ namespace MonsterMonitor.Services
 
         public async Task StartMonitor()
         {
-            _ = Task.Run(async () => await CheckProcess());
+            StopMonitor();
+            _monitorCancellation = new CancellationTokenSource();
+            _monitorTask = Task.Run(async () => await CheckProcess(_monitorCancellation.Token));
+            await Task.CompletedTask;
         }
 
-        private async Task CheckProcess()
+        public void StopMonitor()
         {
-            while (true)
+            if (_monitorCancellation == null)
+            {
+                return;
+            }
+
+            _monitorCancellation.Cancel();
+            try
+            {
+                _monitorTask?.Wait(TimeSpan.FromSeconds(1));
+            }
+            catch
+            {
+                // Ignore shutdown errors.
+            }
+            finally
+            {
+                _monitorCancellation.Dispose();
+                _monitorCancellation = null;
+                _monitorTask = null;
+            }
+        }
+
+        private async Task CheckProcess(CancellationToken token)
+        {
+            while (!token.IsCancellationRequested)
             {
                 try
                 {
@@ -70,7 +100,14 @@ namespace MonsterMonitor.Services
                     MessageBox.Show(ex.Message + ex.StackTrace);
                 }
 
-                await Task.Delay(TimeSpan.FromSeconds(3));
+                try
+                {
+                    await Task.Delay(TimeSpan.FromSeconds(3), token);
+                }
+                catch (TaskCanceledException)
+                {
+                    break;
+                }
             }
         }
     }
@@ -78,5 +115,6 @@ namespace MonsterMonitor.Services
     public interface IAuthMonitor
     {
         Task StartMonitor();
+        void StopMonitor();
     }
 }