diff --git a/src/agent/NetworkResurrector.Agent.Application/CommandHandlers/LockHandler.cs b/src/agent/NetworkResurrector.Agent.Application/CommandHandlers/LockHandler.cs
new file mode 100644
index 0000000..af90e01
--- /dev/null
+++ b/src/agent/NetworkResurrector.Agent.Application/CommandHandlers/LockHandler.cs
@@ -0,0 +1,47 @@
+using MediatR;
+using Microsoft.Extensions.Logging;
+using NetworkResurrector.Agent.Application.Services.Abstractions;
+using NetworkResurrector.Agent.PublishedLanguage.Commands;
+using NetworkResurrector.Agent.PublishedLanguage.Events;
+using System.Diagnostics;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace NetworkResurrector.Agent.Application.CommandHandlers
+{
+    public class LockHandler : IRequestHandler<Lock, LockResult>
+    {
+        private readonly ILogger<LockHandler> _logger;
+        private readonly IPowerService _powerService;
+        private readonly IValidationService _validationService;
+
+        public LockHandler(ILogger<LockHandler> logger, IPowerService powerService, IValidationService validationService)
+        {
+            _logger=logger;
+            _powerService=powerService;
+            _validationService=validationService;
+        }
+
+        public async Task<LockResult> Handle(Lock command, CancellationToken cancellationToken)
+        {
+            return await Task.Run(() => Handle(command));
+        }
+
+        private LockResult Handle(Lock command)
+        {
+            _validationService.ValidateRestrictions(command.Owner);
+
+            _logger.LogDebug($"Start locking the user.");
+
+            var stopWatch = new Stopwatch();
+            stopWatch.Start();
+
+            _powerService.Lock();
+
+            stopWatch.Stop();
+            _logger.LogDebug($"User lock finished - {stopWatch.ElapsedMilliseconds:N0} ms");
+
+            return new LockResult() { Success = true };
+        }
+    }
+}
diff --git a/src/agent/NetworkResurrector.Agent.Application/Services/Windows/CmdService.cs b/src/agent/NetworkResurrector.Agent.Application/Services/Windows/CmdService.cs
index ab55980..9a50a46 100644
--- a/src/agent/NetworkResurrector.Agent.Application/Services/Windows/CmdService.cs
+++ b/src/agent/NetworkResurrector.Agent.Application/Services/Windows/CmdService.cs
@@ -55,7 +55,7 @@ namespace NetworkResurrector.Agent.Application.Services.Windows
             msg.Append($"Errors:\n {commandError}\n");
             msg.Append($"Process ended at: {DateTime.Now}");
 
-            return (commandError.Length > 0, msg.ToString());
+            return (commandError.Length == 0, msg.ToString());
         }
     }
 }
diff --git a/src/agent/NetworkResurrector.Agent.PublishedLanguage/Commands/Lock.cs b/src/agent/NetworkResurrector.Agent.PublishedLanguage/Commands/Lock.cs
new file mode 100644
index 0000000..de4d5d3
--- /dev/null
+++ b/src/agent/NetworkResurrector.Agent.PublishedLanguage/Commands/Lock.cs
@@ -0,0 +1,12 @@
+using NDB.Application.DataContracts;
+using NetworkResurrector.Agent.PublishedLanguage.Dto;
+using NetworkResurrector.Agent.PublishedLanguage.Events;
+
+namespace NetworkResurrector.Agent.PublishedLanguage.Commands
+{
+    public class Lock : Command<LockResult>
+    {
+        public ActionOwner Owner { get; set; }
+        public ActionOptions Options { get; set; }
+    }
+}
diff --git a/src/agent/NetworkResurrector.Agent.PublishedLanguage/Events/LockResult.cs b/src/agent/NetworkResurrector.Agent.PublishedLanguage/Events/LockResult.cs
new file mode 100644
index 0000000..96e94b0
--- /dev/null
+++ b/src/agent/NetworkResurrector.Agent.PublishedLanguage/Events/LockResult.cs
@@ -0,0 +1,10 @@
+using NetworkResurrector.Agent.PublishedLanguage.Dto;
+
+namespace NetworkResurrector.Agent.PublishedLanguage.Events
+{
+    public class LockResult
+    {
+        public bool Success { get; set; }
+        public HostInfo Host { get; set; }
+    }
+}
diff --git a/src/agent/NetworkResurrector.Agent/Controllers/HostController.cs b/src/agent/NetworkResurrector.Agent/Controllers/HostController.cs
index 387a31a..6a3f291 100644
--- a/src/agent/NetworkResurrector.Agent/Controllers/HostController.cs
+++ b/src/agent/NetworkResurrector.Agent/Controllers/HostController.cs
@@ -45,5 +45,12 @@ namespace NetworkResurrector.Agent.Controllers
             var result = await _mediator.Send(logout);
             return Ok(result);
         }
+
+        [HttpPost("lock")]
+        public async Task<IActionResult> Lock([FromBody] Lock _lock)
+        {
+            var result = await _mediator.Send(_lock);
+            return Ok(result);
+        }
     }
 }