diff --git a/chrome/content/zotero/xpcom/ipc.js b/chrome/content/zotero/xpcom/ipc.js
index 86cbb8b1c..0912e423c 100755
--- a/chrome/content/zotero/xpcom/ipc.js
+++ b/chrome/content/zotero/xpcom/ipc.js
@@ -30,9 +30,6 @@ Zotero.IPC = new function() {
 	 * Initialize pipe for communication with connector
 	 */
 	this.init = function() {
-		// TEMP: Disabled for 5.0 Beta
-		return;
-		
 		if(!Zotero.isWin) {	// no pipe support on Fx 3.6
 			_instancePipe = _getPipeDirectory();
 			if(!_instancePipe.exists()) {
diff --git a/chrome/content/zotero/xpcom/zotero.js b/chrome/content/zotero/xpcom/zotero.js
index 88bd76234..414c42455 100644
--- a/chrome/content/zotero/xpcom/zotero.js
+++ b/chrome/content/zotero/xpcom/zotero.js
@@ -811,8 +811,6 @@ Components.utils.import("resource://gre/modules/osfile.jsm");
 			}
 			// Storage busy
 			else if (e.message.endsWith('2153971713')) {
-				// TEMP: Disabled for 5.0 Beta
-				/*
 				if(Zotero.isStandalone) {
 					// Standalone should force Fx to release lock 
 					if(!haveReleasedLock && Zotero.IPC.broadcast("releaseLock")) {
@@ -836,7 +834,6 @@ Components.utils.import("resource://gre/modules/osfile.jsm");
 						throw "ZOTERO_SHOULD_START_AS_CONNECTOR";
 					}
 				}
-				*/
 				
 				var msg = Zotero.localeJoin([
 					Zotero.getString('startupError.databaseInUse'),
diff --git a/components/zotero-service.js b/components/zotero-service.js
index 9007ace2f..0672dcf2a 100644
--- a/components/zotero-service.js
+++ b/components/zotero-service.js
@@ -424,8 +424,6 @@ ZoteroCommandLineHandler.prototype = {
 		}
 		
 		// handler for Windows IPC commands
-		// TEMP: Disabled for 5.0 Beta
-		/*
 		var ipcParam = cmdLine.handleFlagWithParam("ZoteroIPC", false);
 		if(ipcParam) {
 			// Don't open a new window
@@ -433,7 +431,6 @@ ZoteroCommandLineHandler.prototype = {
 			var Zotero = this.Zotero;
 			Zotero.setTimeout(function() { Zotero.IPC.parsePipeInput(ipcParam) }, 0);
 		}
-		*/
 		
 		// special handler for "zotero" URIs at the command line to prevent them from opening a new
 		// window