diff --git a/src/vs/platform/extensionManagement/node/extensionLifecycle.ts b/src/vs/platform/extensionManagement/node/extensionLifecycle.ts
index 2b55aa25e5f1745c54491f9f5dcc9ad84c7b4666..57b5112f8f427f57a05c9a2429d58abe0b744948 100644
--- a/src/vs/platform/extensionManagement/node/extensionLifecycle.ts
+++ b/src/vs/platform/extensionManagement/node/extensionLifecycle.ts
@@ -8,7 +8,7 @@ import { ILocalExtension } from 'vs/platform/extensionManagement/common/extensio
 import { ILogService } from 'vs/platform/log/common/log';
 import { fork, ChildProcess } from 'child_process';
 import { toErrorMessage } from 'vs/base/common/errorMessage';
-import { posix } from 'vs/base/common/path';
+import { join } from 'vs/base/common/path';
 import { Limiter } from 'vs/base/common/async';
 import { Event } from 'vs/base/common/event';
 import { Schemas } from 'vs/base/common/network';
@@ -45,7 +45,7 @@ export class ExtensionsLifecycle extends Disposable {
 				this.logService.warn(extension.identifier.id, extension.manifest.version, `${scriptKey} should be a node script`);
 				return null;
 			}
-			return { script: posix.join(extension.location.fsPath, script[1]), args: script.slice(2) || [] };
+			return { script: join(extension.location.fsPath, script[1]), args: script.slice(2) || [] };
 		}
 		return null;
 	}
@@ -130,6 +130,6 @@ export class ExtensionsLifecycle extends Disposable {
 	}
 
 	private getExtensionStoragePath(extension: ILocalExtension): string {
-		return posix.join(this.environmentService.globalStorageHome, extension.identifier.id.toLowerCase());
+		return join(this.environmentService.globalStorageHome, extension.identifier.id.toLowerCase());
 	}
 }
diff --git a/src/vs/platform/localizations/node/localizations.ts b/src/vs/platform/localizations/node/localizations.ts
index a0740ffa1a1b821f50cfd1b004af49018c05c79c..1deb73c4cab06fe77d4196101acafccda4e2f583 100644
--- a/src/vs/platform/localizations/node/localizations.ts
+++ b/src/vs/platform/localizations/node/localizations.ts
@@ -16,7 +16,7 @@ import product from 'vs/platform/node/product';
 import { distinct, equals } from 'vs/base/common/arrays';
 import { Event, Emitter } from 'vs/base/common/event';
 import { Schemas } from 'vs/base/common/network';
-import { posix } from 'vs/base/common/path';
+import { join } from 'vs/base/common/path';
 
 interface ILanguagePack {
 	hash: string;
@@ -105,7 +105,7 @@ class LanguagePacksCache extends Disposable {
 		@ILogService private readonly logService: ILogService
 	) {
 		super();
-		this.languagePacksFilePath = posix.join(environmentService.userDataPath, 'languagepacks.json');
+		this.languagePacksFilePath = join(environmentService.userDataPath, 'languagepacks.json');
 		this.languagePacksFileLimiter = new Queue();
 	}
 
@@ -151,7 +151,7 @@ class LanguagePacksCache extends Disposable {
 					languagePack.extensions.push({ extensionIdentifier, version: extension.manifest.version });
 				}
 				for (const translation of localizationContribution.translations) {
-					languagePack.translations[translation.id] = posix.join(extension.location.fsPath, translation.path);
+					languagePack.translations[translation.id] = join(extension.location.fsPath, translation.path);
 				}
 			}
 		}
diff --git a/src/vs/workbench/api/node/apiCommands.ts b/src/vs/workbench/api/node/apiCommands.ts
index ab545da263ae2bf198ba5d7f295392dd847cf023..ae2ee5b4c0eadeae9aba06d060016f79a7bf9a08 100644
--- a/src/vs/workbench/api/node/apiCommands.ts
+++ b/src/vs/workbench/api/node/apiCommands.ts
@@ -4,7 +4,7 @@
  *--------------------------------------------------------------------------------------------*/
 
 import { tmpdir } from 'os';
-import { posix } from 'vs/base/common/path';
+import { join } from 'vs/base/common/path';
 import * as vscode from 'vscode';
 import { URI } from 'vs/base/common/uri';
 import { isMalformedFileUri } from 'vs/base/common/resources';
@@ -130,7 +130,7 @@ CommandsRegistry.registerCommand(SetEditorLayoutAPICommand.ID, adjustHandler(Set
 
 CommandsRegistry.registerCommand('_workbench.downloadResource', function (accessor: ServicesAccessor, resource: URI) {
 	const downloadService = accessor.get(IDownloadService);
-	const location = posix.join(tmpdir(), generateUuid());
+	const location = join(tmpdir(), generateUuid());
 
 	return downloadService.download(resource, location).then(() => URI.file(location));
 });
\ No newline at end of file
diff --git a/src/vs/workbench/api/node/extHostOutputService.ts b/src/vs/workbench/api/node/extHostOutputService.ts
index 378e541f9902cdfd836855b6f1f48d432ac6c0e6..e009ffb6dcbba5d9bbef8607fdeef8f449f222cc 100644
--- a/src/vs/workbench/api/node/extHostOutputService.ts
+++ b/src/vs/workbench/api/node/extHostOutputService.ts
@@ -6,7 +6,7 @@
 import { MainContext, MainThreadOutputServiceShape, IMainContext, ExtHostOutputServiceShape } from './extHost.protocol';
 import * as vscode from 'vscode';
 import { URI } from 'vs/base/common/uri';
-import { posix } from 'vs/base/common/path';
+import { join } from 'vs/base/common/path';
 import { OutputAppender } from 'vs/workbench/contrib/output/node/outputAppender';
 import { toLocalISOString } from 'vs/base/common/date';
 import { Event, Emitter } from 'vs/base/common/event';
@@ -103,7 +103,7 @@ export class ExtHostOutputChannelBackedByFile extends AbstractExtHostOutputChann
 
 	constructor(name: string, outputDir: string, proxy: MainThreadOutputServiceShape) {
 		const fileName = `${ExtHostOutputChannelBackedByFile._namePool++}-${name}`;
-		const file = URI.file(posix.join(outputDir, `${fileName}.log`));
+		const file = URI.file(join(outputDir, `${fileName}.log`));
 
 		super(name, false, file, proxy);
 		this._appender = new OutputAppender(fileName, file.fsPath);
@@ -150,7 +150,7 @@ export class ExtHostOutputService implements ExtHostOutputServiceShape {
 	private _visibleChannelDisposable: IDisposable;
 
 	constructor(logsLocation: URI, mainContext: IMainContext) {
-		this._outputDir = posix.join(logsLocation.fsPath, `output_logging_${toLocalISOString(new Date()).replace(/-|:|\.\d+Z$/g, '')}`);
+		this._outputDir = join(logsLocation.fsPath, `output_logging_${toLocalISOString(new Date()).replace(/-|:|\.\d+Z$/g, '')}`);
 		this._proxy = mainContext.getProxy(MainContext.MainThreadOutputService);
 	}
 
diff --git a/src/vs/workbench/services/configurationResolver/common/variableResolver.ts b/src/vs/workbench/services/configurationResolver/common/variableResolver.ts
index 544988b7489f219f193fc6c8c00f1d37cc57cd42..e23d271a4e79085aa2b7d2c9aeb46b9e9e0a1402 100644
--- a/src/vs/workbench/services/configurationResolver/common/variableResolver.ts
+++ b/src/vs/workbench/services/configurationResolver/common/variableResolver.ts
@@ -236,7 +236,7 @@ export class AbstractVariableResolverService implements IConfigurationResolverSe
 
 						case 'relativeFile':
 							if (folderUri) {
-								return resolvedValue = paths.posix.normalize(paths.relative(folderUri.fsPath, filePath));
+								return resolvedValue = paths.normalize(paths.relative(folderUri.fsPath, filePath));
 							}
 							return resolvedValue = filePath;
 
diff --git a/src/vs/workbench/services/extensions/electron-browser/extensionService.ts b/src/vs/workbench/services/extensions/electron-browser/extensionService.ts
index a6d06e2e448515df5466a9e4bfea24cc662cf1c4..d7d69bb07c9111a5d1d115309f8851339e7eb3e8 100644
--- a/src/vs/workbench/services/extensions/electron-browser/extensionService.ts
+++ b/src/vs/workbench/services/extensions/electron-browser/extensionService.ts
@@ -101,7 +101,7 @@ export class ExtensionService extends Disposable implements IExtensionService {
 		@ILifecycleService private readonly _lifecycleService: ILifecycleService
 	) {
 		super();
-		this._extensionHostLogsLocation = URI.file(path.posix.join(this._environmentService.logsPath, `exthost${this._windowService.getCurrentWindowId()}`));
+		this._extensionHostLogsLocation = URI.file(path.join(this._environmentService.logsPath, `exthost${this._windowService.getCurrentWindowId()}`));
 		this._registry = null;
 		this._installedExtensionsReady = new Barrier();
 		this._isDev = !this._environmentService.isBuilt || this._environmentService.isExtensionDevelopment;