diff --git a/Libs/CMS_CORE_Library.dll b/Libs/CMS_CORE_Library.dll
index 97910bb7..94d6bcfd 100644
Binary files a/Libs/CMS_CORE_Library.dll and b/Libs/CMS_CORE_Library.dll differ
diff --git a/Step.NC/NcHandler.cs b/Step.NC/NcHandler.cs
index 712f2457..760f384b 100644
--- a/Step.NC/NcHandler.cs
+++ b/Step.NC/NcHandler.cs
@@ -122,6 +122,28 @@ namespace Step.NC
             return cmsError;
         }
 
+        public CmsError DeactivateProgram(out DTOActiveProgramDataModel dtoData)
+        {
+            dtoData = new DTOActiveProgramDataModel();
+            // Get selectedProcess process id
+            ushort selectedProcess = 0;
+            CmsError cmsError = numericalControl.PROC_RSelectedProcess(ref selectedProcess);
+            if (cmsError.IsError())
+                return cmsError;
+
+            ActiveProgramDataModel data = new ActiveProgramDataModel();
+            cmsError = numericalControl.FILES_WDeactivateProgram(selectedProcess);
+
+            dtoData = new DTOActiveProgramDataModel()
+            {
+                IsoLines = data.IsoLines,
+                Path = data.Path,
+                TimeLeft = data.TimeLeft
+            };
+
+            return cmsError;
+        }
+
         #endregion 
 
         #region Read Data
diff --git a/Step/Controllers/WebApi/NcFileController.cs b/Step/Controllers/WebApi/NcFileController.cs
index 227507a0..8af478c5 100644
--- a/Step/Controllers/WebApi/NcFileController.cs
+++ b/Step/Controllers/WebApi/NcFileController.cs
@@ -67,6 +67,21 @@ namespace Step.Controllers.WebApi
             }
         }
 
+        [Route("file/deactivate"), HttpPut]
+        public IHttpActionResult DeactivateProgram()
+        {
+            using (NcHandler ncHandler = new NcHandler())
+            {
+                ncHandler.Connect();
+
+                CmsError cmsError = ncHandler.DeactivateProgram(out DTOActiveProgramDataModel fileInfo);
+                if (cmsError.IsError())
+                    return BadRequest(cmsError.localizationKey);
+
+                return Ok(fileInfo);
+            }
+        }
+
         [Route("upload"), HttpPost]
         public async Task<IHttpActionResult> AddAttachment()
         {