diff --git a/src/main/java/com/cryptlex/lexfloatclient/LexFloatClientException.java b/src/main/java/com/cryptlex/lexfloatclient/LexFloatClientException.java
index cdffb18..7438669 100644
--- a/src/main/java/com/cryptlex/lexfloatclient/LexFloatClientException.java
+++ b/src/main/java/com/cryptlex/lexfloatclient/LexFloatClientException.java
@@ -75,11 +75,32 @@ public static String getErrorMessage(int errorCode) {
             message = "No product version is linked with the license.";
             break;
         case LF_E_FEATURE_FLAG_NOT_FOUND:
-            message = "The product version feature flag does not exist.";
+            message = "The product version feature flag does not exist."; 
             break;
         case LF_E_IP:
             message = "IP address is not allowed.";
             break;
+        case LF_E_SYSTEM_PERMISSION:
+            message = "Insufficient system permissions.";
+            break;
+        case LF_E_INVALID_PERMISSION_FLAG:
+            message = "Invalid permission flag.";
+            break;
+        case LF_E_OFFLINE_FLOATING_LICENSE_NOT_ALLOWED:
+            message = "Offline floating license is not allowed for per-instance leasing strategy.";
+            break;
+        case LF_E_MAX_OFFLINE_LEASE_DURATION_EXCEEDED:
+            message = "Maximum offline lease duration exceeded.";
+            break;
+        case LF_E_ALLOWED_OFFLINE_FLOATING_CLIENTS_LIMIT_REACHED:
+            message = "Allowed offline floating clients limit reached.";
+            break;
+        case LF_E_WMIC:
+            message = "Fingerprint couldn't be generated because Windows Management Instrumentation (WMI) service has been disabled.";
+            break;
+        case LF_E_MACHINE_FINGERPRINT:
+            message = "Machine fingerprint has changed since activation.";
+            break;
         case LF_E_CLIENT:
             message = "Client error.";
             break;
@@ -101,13 +122,14 @@ public static String getErrorMessage(int errorCode) {
         case LF_E_SERVER_LICENSE_GRACE_PERIOD_OVER:
             message = "The grace period for server license is over.";
             break;
+        case LF_E_PROXY_NOT_TRUSTED:
+            message = "Request blocked due to untrusted proxy.";
+            break;
         default:
             message = "Unknown error!";
-
         }
         return message;
     }
-
     /*
      * CODE: LF_OK
      * 
@@ -245,18 +267,23 @@ public static String getErrorMessage(int errorCode) {
 
     /*
      * CODE: LF_E_PRODUCT_VERSION_NOT_LINKED
-     *
+     * 
      * MESSAGE: No product version is linked with the license.
      */
     public static final int LF_E_PRODUCT_VERSION_NOT_LINKED = 57;
 
     /*
      * CODE: LF_E_FEATURE_FLAG_NOT_FOUND
-     *
+     * 
      * MESSAGE: The product version feature flag does not exist.
      */
     public static final int LF_E_FEATURE_FLAG_NOT_FOUND = 58;
     
+    /*
+     * Insufficient system permissions.
+    */
+    public static final int LF_E_SYSTEM_PERMISSION = 59;
+    
     /*
      * CODE: LF_E_IP
      * 
@@ -264,6 +291,54 @@ public static String getErrorMessage(int errorCode) {
      */
     public static final int LF_E_IP = 60;
 
+    /*
+    * CODE: LF_E_INVALID_PERMISSION_FLAG
+    * 
+    * MESSAGE: Invalid permission flag.
+    */
+    public static final int LF_E_INVALID_PERMISSION_FLAG = 61;
+
+    /*
+    * CODE: LF_E_OFFLINE_FLOATING_LICENSE_NOT_ALLOWED
+    * 
+    * MESSAGE: Offline floating license is not allowed for per-instance leasing strategy.
+    */
+    public static final int LF_E_OFFLINE_FLOATING_LICENSE_NOT_ALLOWED = 62;
+
+    /*
+    * CODE: LF_E_MAX_OFFLINE_LEASE_DURATION_EXCEEDED
+    * 
+    * MESSAGE: Maximum offline lease duration exceeded.
+    */
+    public static final int LF_E_MAX_OFFLINE_LEASE_DURATION_EXCEEDED = 63;
+
+    /*
+    * CODE: LF_E_ALLOWED_OFFLINE_FLOATING_CLIENTS_LIMIT_REACHED
+    * 
+    * MESSAGE: Allowed offline floating clients limit reached.
+    */
+    public static final int LF_E_ALLOWED_OFFLINE_FLOATING_CLIENTS_LIMIT_REACHED = 64;
+
+    /*
+    * CODE: LF_E_WMIC
+    * 
+    * MESSAGE: Fingerprint couldn't be generated because Windows Management Instrumentation (WMI) service has been disabled.
+    */
+    public static final int LF_E_WMIC = 65;
+
+    /*
+    * CODE: LF_E_MACHINE_FINGERPRINT
+    * 
+    * MESSAGE: Machine fingerprint has changed since activation.
+    */
+    public static final int LF_E_MACHINE_FINGERPRINT = 66;
+    /*
+    * CODE: LF_E_PROXY_NOT_TRUSTED
+    *
+    * MESSAGE: Request blocked due to untrusted proxy.
+    */
+    public static final int LF_E_PROXY_NOT_TRUSTED = 67;
+
     /*
      * CODE: LF_E_CLIENT
      * 
@@ -313,4 +388,4 @@ public static String getErrorMessage(int errorCode) {
      * MESSAGE: The grace period for server license is over.
      */
     public static final int LF_E_SERVER_LICENSE_GRACE_PERIOD_OVER = 76;
-}
+}
\ No newline at end of file