diff --git a/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/CaptureClipboard.java b/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/CaptureClipboard.java
index 4b16a0240..f28309808 100644
--- a/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/CaptureClipboard.java
+++ b/guacamole/src/main/java/org/glyptodon/guacamole/net/basic/CaptureClipboard.java
@@ -28,6 +28,7 @@ import javax.servlet.http.HttpServletResponse;
 import javax.servlet.http.HttpSession;
 import org.glyptodon.guacamole.GuacamoleException;
 import org.glyptodon.guacamole.GuacamoleServerException;
+import org.glyptodon.guacamole.GuacamoleUnsupportedException;
 import org.glyptodon.guacamole.net.auth.UserContext;
 import org.glyptodon.guacamole.properties.BooleanGuacamoleProperty;
 import org.glyptodon.guacamole.properties.GuacamoleProperties;
@@ -79,6 +80,10 @@ public class CaptureClipboard extends AuthenticatingHttpServlet {
 
         }
 
+        // Otherwise, inform not supported
+        else
+            throw new GuacamoleUnsupportedException("Clipboard integration not supported");
+
     }
 
 }
diff --git a/guacamole/src/main/webapp/scripts/admin-ui.js b/guacamole/src/main/webapp/scripts/admin-ui.js
index e21150b31..50bdc19b5 100644
--- a/guacamole/src/main/webapp/scripts/admin-ui.js
+++ b/guacamole/src/main/webapp/scripts/admin-ui.js
@@ -645,8 +645,8 @@ GuacAdmin.UserEditor = function(name, parameters) {
             GuacAdmin.reset();
 
         }
-        catch (e) {
-            alert(e.message);
+        catch (status) {
+            alert(status.message);
         }
 
     };
@@ -684,8 +684,8 @@ GuacAdmin.UserEditor = function(name, parameters) {
                 }
 
                 // Alert on failure
-                catch (e) {
-                    alert(e.message);
+                catch (status) {
+                    alert(status.message);
                 }
 
             }
@@ -983,8 +983,8 @@ GuacAdmin.ConnectionEditor = function(connection, parameters) {
             GuacAdmin.reset();
 
         }
-        catch (e) {
-            alert(e.message);
+        catch (status) {
+            alert(status.message);
         }
 
     };
@@ -1022,8 +1022,8 @@ GuacAdmin.ConnectionEditor = function(connection, parameters) {
                 }
 
                 // Alert on failure
-                catch (e) {
-                    alert(e.message);
+                catch (status) {
+                    alert(status.message);
                 }
 
             }
@@ -1176,8 +1176,8 @@ GuacAdmin.ConnectionGroupEditor = function(group, parameters) {
             GuacAdmin.reset();
 
         }
-        catch (e) {
-            alert(e.message);
+        catch (status) {
+            alert(status.message);
         }
 
     };
@@ -1215,8 +1215,8 @@ GuacAdmin.ConnectionGroupEditor = function(group, parameters) {
                 }
 
                 // Alert on failure
-                catch (e) {
-                    alert(e.message);
+                catch (status) {
+                    alert(status.message);
                 }
 
             }
@@ -1406,8 +1406,8 @@ GuacAdmin.reset = function() {
             }
 
             // Alert on failure
-            catch (e) {
-                alert(e.message);
+            catch (status) {
+                alert(tatusmessage);
             }
 
         };
diff --git a/guacamole/src/main/webapp/scripts/client-ui.js b/guacamole/src/main/webapp/scripts/client-ui.js
index 1b29362e0..8f41a567b 100644
--- a/guacamole/src/main/webapp/scripts/client-ui.js
+++ b/guacamole/src/main/webapp/scripts/client-ui.js
@@ -254,7 +254,9 @@ GuacUI.Client = {
 
     "connectionName"  : "Guacamole",
     "overrideAutoFit" : false,
-    "attachedClient"  : null
+    "attachedClient"  : null,
+
+    "clipboard_integration_enabled" : undefined,
 
 };
 
@@ -1310,25 +1312,61 @@ GuacUI.Client.attach = function(guac) {
 
     };
 
+    /**
+     * Returns the contents of the remote clipboard if clipboard integration is
+     * enabled, and null otherwise.
+     */
+    function get_clipboard_data() {
+
+        // If integration not enabled, do not attempt retrieval
+        if (GuacUI.Client.clipboard_integration_enabled === false)
+            return null;
+
+        // Otherwise, attempt retrieval and update integration status
+        try {
+            var data = GuacamoleService.Clipboard.get();
+            GuacUI.Client.clipboard_integration_enabled = true;
+            return data;
+        }
+        catch (status) {
+            GuacUI.Client.clipboard_integration_enabled = false;
+            return null;
+        }
+
+    }
+
     // Set local clipboard contents on cut 
     document.body.addEventListener("cut", function handle_cut(e) {
-        e.preventDefault();
-        var data = GuacamoleService.Clipboard.get();
-        e.clipboardData.setData("text/plain", data);
+        var data = get_clipboard_data();
+        if (data !== null) {
+            e.preventDefault();
+            e.clipboardData.setData("text/plain", data);
+        }
     }, false);
 
     // Set local clipboard contents on copy 
     document.body.addEventListener("copy", function handle_copy(e) {
-        e.preventDefault();
-        var data = GuacamoleService.Clipboard.get();
-        e.clipboardData.setData("text/plain", data);
+        var data = get_clipboard_data();
+        if (data !== null) {
+            e.preventDefault();
+            e.clipboardData.setData("text/plain", data);
+        }
     }, false);
 
     // Set remote clipboard contents on paste
     document.body.addEventListener("paste", function handle_paste(e) {
-        e.preventDefault();
-        if (GuacUI.Client.attachedClient)
-            GuacUI.Client.attachedClient.setClipboard(e.clipboardData.getData("text/plain"));
+
+        // If status of clipboard integration is unknown, attempt to define it
+        if (GuacUI.Client.clipboard_integration_enabled === undefined)
+            get_clipboard_data();
+
+        // Override and handle paste only if integration is enabled
+        if (GuacUI.Client.clipboard_integration_enabled) {
+            e.preventDefault();
+            if (GuacUI.Client.attachedClient)
+                GuacUI.Client.attachedClient.setClipboard(e.clipboardData.getData("text/plain"));
+        }
+
     }, false);
 
     /*
diff --git a/guacamole/src/main/webapp/scripts/service.js b/guacamole/src/main/webapp/scripts/service.js
index 9a2efc833..d9f09c126 100644
--- a/guacamole/src/main/webapp/scripts/service.js
+++ b/guacamole/src/main/webapp/scripts/service.js
@@ -325,19 +325,22 @@ GuacamoleService.PermissionSet = function() {
 GuacamoleService.handleResponse = function(xhr) {
 
     // For HTTP Forbidden, just return permission denied
-    if (xhr.status == 403)
-        throw new Error("Permission denied.");
+    if (xhr.status === 403)
+        throw new Guacamole.Status(Guacamole.Status.Code.CLIENT_FORBIDDEN, "Permission denied.");
 
     // Otherwise, if unsuccessful, throw error with message derived from
     // response
-    if (xhr.status != 200) {
+    if (xhr.status !== 200) {
+
+        // Retrieve error code
+        var code = parseInt(xhr.getResponseHeader("Guacamole-Status-Code"));
 
         // Retrieve error message
         var message =    xhr.getResponseHeader("Guacamole-Error-Message")
                       || xhr.statusText;
 
         // Throw error with derived message
-        throw new Error(message);
+        throw new Guacamole.Status(code, message);
 
     }