diff -r 019b620aea7d maven.j2ee/src/org/netbeans/modules/maven/j2ee/ui/customizer/impl/Bundle.properties
--- a/maven.j2ee/src/org/netbeans/modules/maven/j2ee/ui/customizer/impl/Bundle.properties	Tue Sep 17 06:35:45 2013 +0000
+++ b/maven.j2ee/src/org/netbeans/modules/maven/j2ee/ui/customizer/impl/Bundle.properties	Tue Sep 17 10:53:56 2013 +0200
@@ -30,6 +30,7 @@
 WebRunCustomizerPanel.txtContextPath.AccessibleContext.accessibleDescription=Context Path
 WebRunCustomizerPanel.txtRelativeUrl.AccessibleContext.accessibleDescription=Relative URL
 WebRunCustomizerPanel.contextPathDisabled=A server must be selected first in order to modify this field
+WebRunCustomizerPanel.contextPathDisabledConfirm=Select a server and confirm the dialog in order to modify this field
 
 # frameworks were added through the customizer. 
 # {0} the first added framework
diff -r 019b620aea7d maven.j2ee/src/org/netbeans/modules/maven/j2ee/ui/customizer/impl/CustomizerRunWeb.java
--- a/maven.j2ee/src/org/netbeans/modules/maven/j2ee/ui/customizer/impl/CustomizerRunWeb.java	Tue Sep 17 06:35:45 2013 +0000
+++ b/maven.j2ee/src/org/netbeans/modules/maven/j2ee/ui/customizer/impl/CustomizerRunWeb.java	Tue Sep 17 10:53:56 2013 +0200
@@ -60,6 +60,7 @@
 import org.netbeans.modules.maven.j2ee.ui.customizer.BaseRunCustomizer;
 import org.netbeans.modules.maven.j2ee.ui.util.CopyStaticResourcesOnSaveCheckBoxUpdater;
 import org.netbeans.modules.maven.j2ee.utils.LoggingUtils;
+import org.netbeans.modules.maven.j2ee.utils.ServerUtils;
 import org.netbeans.modules.maven.j2ee.web.WebModuleImpl;
 import org.netbeans.modules.maven.j2ee.web.WebModuleProviderImpl;
 import org.netbeans.modules.web.api.webmodule.WebModule;
@@ -79,6 +80,8 @@
 
     public static final String PROP_SHOW_IN_BROWSER = "netbeans.deploy.showBrowser"; //NOI18N
 
+    private final boolean noServer;
+
     private BrowserComboBoxModel browserModel;
 
     private WebModule module;
@@ -104,6 +107,8 @@
             contextPathTField.setText(module.getContextPath());
         }
 
+        noServer = ExecutionChecker.DEV_NULL.equals(ServerUtils.findServer(project).getServerID());
+
         initValues();
         initServerModel(serverCBox, serverLabel, J2eeModule.Type.WAR);
         initVersionModel(javaeeVersionCBox, javaeeVersionLabel, J2eeModule.Type.WAR);
@@ -403,10 +408,14 @@
             if (contextPathTField.isEnabled()) {
                 contextPathTField.setEnabled(false);
                 oldContextPath = contextPathTField.getText();
-                contextPathTField.setText(NbBundle.getMessage(CustomizerRunWeb.class, "WebRunCustomizerPanel.contextPathDisabled"));
+                if (!noServer) {
+                    contextPathTField.setText(NbBundle.getMessage(CustomizerRunWeb.class, "WebRunCustomizerPanel.contextPathDisabled"));
+                } else {
+                    contextPathTField.setText(NbBundle.getMessage(CustomizerRunWeb.class, "WebRunCustomizerPanel.contextPathDisabledConfirm"));
+                }
             }
         } else {
-            if (!contextPathTField.isEnabled()) {
+            if (!contextPathTField.isEnabled() && !noServer) {
                 contextPathTField.setEnabled(true);
                 if (oldContextPath != null) {
                     contextPathTField.setText(oldContextPath);