diff --git a/src/vs/vscode.d.ts b/src/vs/vscode.d.ts
index 975b3ed56e1..e45661243b5 100644
--- a/src/vs/vscode.d.ts
+++ b/src/vs/vscode.d.ts
@@ -2647,17 +2647,6 @@ declare namespace vscode {
 		 */
 		has(section: string): boolean;
 
-		/**
-		 * Update a configuration value. A value can be changed for the current
-		 * [workspace](#workspace.rootPath) only or globally for all instances of the
-		 * editor. The updated configuration values are persisted.
-		 *
-		 * @param section Configuration name, supports _dotted_ names.
-		 * @param value The new value.
-		 * @param global When `true` changes the configuration value for all instances of the editor.
-		 */
-		update(section: string, value: any, global: boolean): Thenable<void>;
-
 		/**
 		 * Readable dictionary that backs this configuration.
 		 * @readonly
diff --git a/src/vs/workbench/api/node/extHostConfiguration.ts b/src/vs/workbench/api/node/extHostConfiguration.ts
index 760a4a7c9f7..835ebf69510 100644
--- a/src/vs/workbench/api/node/extHostConfiguration.ts
+++ b/src/vs/workbench/api/node/extHostConfiguration.ts
@@ -9,7 +9,7 @@ import {illegalState} from 'vs/base/common/errors';
 import Event, {Emitter} from 'vs/base/common/event';
 import {WorkspaceConfiguration} from 'vscode';
 import {ExtHostConfigurationShape, MainThreadConfigurationShape} from './extHost.protocol';
-import {ConfigurationTarget} from 'vs/workbench/services/configuration/common/configurationEditing';
+// import {ConfigurationTarget} from 'vs/workbench/services/configuration/common/configurationEditing';
 
 export class ExtHostConfiguration extends ExtHostConfigurationShape {
 
@@ -52,11 +52,11 @@ export class ExtHostConfiguration extends ExtHostConfigurationShape {
 					result = defaultValue;
 				}
 				return result;
-			},
-			update: (key: string, value: any, global: boolean) => {
-				key = section ? `${section}.${key}` : key;
-				const target = global ? ConfigurationTarget.USER : ConfigurationTarget.WORKSPACE;
-				return this._proxy.$updateConfigurationOption(target, key, value);
+			// },
+			// update: (key: string, value: any, global: boolean) => {
+			// 	key = section ? `${section}.${key}` : key;
+			// 	const target = global ? ConfigurationTarget.USER : ConfigurationTarget.WORKSPACE;
+			// 	return this._proxy.$updateConfigurationOption(target, key, value);
 			}
 		};
 
diff --git a/src/vs/workbench/test/node/api/extHostConfiguration.test.ts b/src/vs/workbench/test/node/api/extHostConfiguration.test.ts
index f0dbfd633c3..698c83097ab 100644
--- a/src/vs/workbench/test/node/api/extHostConfiguration.test.ts
+++ b/src/vs/workbench/test/node/api/extHostConfiguration.test.ts
@@ -9,7 +9,7 @@ import * as assert from 'assert';
 import {ExtHostConfiguration} from 'vs/workbench/api/node/extHostConfiguration';
 import {MainThreadConfigurationShape} from 'vs/workbench/api/node/extHost.protocol';
 import {TPromise} from 'vs/base/common/winjs.base';
-import {ConfigurationTarget, ConfigurationEditingErrorCode, IConfigurationEditingError} from 'vs/workbench/services/configuration/common/configurationEditing';
+import {ConfigurationTarget/*, ConfigurationEditingErrorCode, IConfigurationEditingError*/} from 'vs/workbench/services/configuration/common/configurationEditing';
 
 suite('ExtHostConfiguration', function () {
 
@@ -21,49 +21,49 @@ suite('ExtHostConfiguration', function () {
 		}
 	};
 
-	function createExtHostConfiguration(data: any = {}, shape?: MainThreadConfigurationShape) {
-		if (!shape) {
-			shape = new class extends MainThreadConfigurationShape { };
-		}
-		const result = new ExtHostConfiguration(shape);
-		result.$acceptConfigurationChanged(data);
-		return result;
-	}
+	// function createExtHostConfiguration(data: any = {}, shape?: MainThreadConfigurationShape) {
+	// 	if (!shape) {
+	// 		shape = new class extends MainThreadConfigurationShape { };
+	// 	}
+	// 	const result = new ExtHostConfiguration(shape);
+	// 	result.$acceptConfigurationChanged(data);
+	// 	return result;
+	// }
 
 	test('check illegal state', function () {
 		assert.throws(() => new ExtHostConfiguration(new class extends MainThreadConfigurationShape { }).getConfiguration('foo'));
 	});
 
-	test('udate / section to key', function () {
+	// test('udate / section to key', function () {
 
-		const shape = new RecordingShape();
-		const allConfig = createExtHostConfiguration({ foo: { bar: 1, far: 2 } }, shape);
+	// 	const shape = new RecordingShape();
+	// 	const allConfig = createExtHostConfiguration({ foo: { bar: 1, far: 2 } }, shape);
 
-		let config = allConfig.getConfiguration('foo');
-		config.update('bar', 42, true);
+	// 	let config = allConfig.getConfiguration('foo');
+	// 	config.update('bar', 42, true);
 
-		assert.equal(shape.lastArgs[1], 'foo.bar');
-		assert.equal(shape.lastArgs[2], 42);
+	// 	assert.equal(shape.lastArgs[1], 'foo.bar');
+	// 	assert.equal(shape.lastArgs[2], 42);
 
-		config = allConfig.getConfiguration('');
-		config.update('bar', 42, true);
-		assert.equal(shape.lastArgs[1], 'bar');
+	// 	config = allConfig.getConfiguration('');
+	// 	config.update('bar', 42, true);
+	// 	assert.equal(shape.lastArgs[1], 'bar');
 
-		config.update('foo.bar', 42, true);
-		assert.equal(shape.lastArgs[1], 'foo.bar');
-	});
+	// 	config.update('foo.bar', 42, true);
+	// 	assert.equal(shape.lastArgs[1], 'foo.bar');
+	// });
 
-	test('update / error-state not OK', function () {
+	// test('update / error-state not OK', function () {
 
-		const shape = new class extends MainThreadConfigurationShape {
-			$updateConfigurationOption(target: ConfigurationTarget, key: string, value: any): TPromise<any> {
-				return TPromise.wrapError(<IConfigurationEditingError>{ code: ConfigurationEditingErrorCode.ERROR_UNKNOWN_KEY, message: 'Unknown Key' }); // something !== OK
-			}
-		};
+	// 	const shape = new class extends MainThreadConfigurationShape {
+	// 		$updateConfigurationOption(target: ConfigurationTarget, key: string, value: any): TPromise<any> {
+	// 			return TPromise.wrapError(<IConfigurationEditingError>{ code: ConfigurationEditingErrorCode.ERROR_UNKNOWN_KEY, message: 'Unknown Key' }); // something !== OK
+	// 		}
+	// 	};
 
-		return createExtHostConfiguration({}, shape)
-			.getConfiguration('')
-			.update('', true, false)
-			.then(() => assert.ok(false), err => { /* expecting rejection */});
-	});
+	// 	return createExtHostConfiguration({}, shape)
+	// 		.getConfiguration('')
+	// 		.update('', true, false)
+	// 		.then(() => assert.ok(false), err => { /* expecting rejection */});
+	// });
 });