diff --git a/TestBenchFramework/Program.cs b/TestBenchFramework/Program.cs
index edc84bb45..741d9100f 100644
--- a/TestBenchFramework/Program.cs
+++ b/TestBenchFramework/Program.cs
@@ -66,6 +66,14 @@ namespace TBF
             Version = string.Format("{0}.{1}.{2}", ver.Major, ver.Minor, ver.Build);
 			BuildDateTime = new System.IO.FileInfo(thisAssembly.Location).LastWriteTime;
 
+            /// Check if another instance is running
+            string processName = System.IO.Path.GetFileNameWithoutExtension(thisAssembly.Location);
+            if (System.Diagnostics.Process.GetProcessesByName(processName).Length > 1)
+            {
+                MessageBox.Show(Strings.Another_instance_is_running, Strings.Error, MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
+                return;
+            }
+
             /// Local program configuration directory including the trailing backslash
 			string locAppDataDir = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) +
 								   Path.DirectorySeparatorChar + "TestBenchFramework" + Path.DirectorySeparatorChar;
diff --git a/TestBenchFramework/Resources/Strings.Designer.cs b/TestBenchFramework/Resources/Strings.Designer.cs
index 781298615..ebb11b903 100644
--- a/TestBenchFramework/Resources/Strings.Designer.cs
+++ b/TestBenchFramework/Resources/Strings.Designer.cs
@@ -222,6 +222,15 @@ namespace TBF.Resources {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Another instance of Test Bench Framework program is running. Please, close it using Task Manager..
+        /// </summary>
+        internal static string Another_instance_is_running {
+            get {
+                return ResourceManager.GetString("Another_instance_is_running", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to Approval.
         /// </summary>
diff --git a/TestBenchFramework/Resources/Strings.cs.resx b/TestBenchFramework/Resources/Strings.cs.resx
index 171091e57..f73f15de4 100644
--- a/TestBenchFramework/Resources/Strings.cs.resx
+++ b/TestBenchFramework/Resources/Strings.cs.resx
@@ -1266,4 +1266,7 @@
   <data name="Short_dercription" xml:space="preserve">
     <value>Stručný popis</value>
   </data>
+  <data name="Another_instance_is_running" xml:space="preserve">
+    <value>Další instance programu Test Bench Framework je spuštěna. Uzavřete jí prosím s použitím 'Správce úloh'.</value>
+  </data>
 </root>
\ No newline at end of file
diff --git a/TestBenchFramework/Resources/Strings.de.resx b/TestBenchFramework/Resources/Strings.de.resx
index 4d48f8f82..f37327e3e 100644
--- a/TestBenchFramework/Resources/Strings.de.resx
+++ b/TestBenchFramework/Resources/Strings.de.resx
@@ -1341,4 +1341,7 @@
   <data name="Short_dercription" xml:space="preserve">
     <value>Kurzbeschreibung</value>
   </data>
+  <data name="Another_instance_is_running" xml:space="preserve">
+    <value>Ein weiteres Test Bench Framework Programm-Instanz ausgeführt wird. Bitte schließen Sie es dem Taskmanager.</value>
+  </data>
 </root>
\ No newline at end of file
diff --git a/TestBenchFramework/Resources/Strings.resx b/TestBenchFramework/Resources/Strings.resx
index 2fb311880..5c031a7fc 100644
--- a/TestBenchFramework/Resources/Strings.resx
+++ b/TestBenchFramework/Resources/Strings.resx
@@ -1510,4 +1510,7 @@
   <data name="T_warm_ref" xml:space="preserve">
     <value>T hi. ref.</value>
   </data>
+  <data name="Another_instance_is_running" xml:space="preserve">
+    <value>Another instance of Test Bench Framework program is running. Please, close it using Task Manager.</value>
+  </data>
 </root>
\ No newline at end of file