diff --git a/chrome/content/zotero/xpcom/ipc.js b/chrome/content/zotero/xpcom/ipc.js
index 0912e423c..86cbb8b1c 100755
--- a/chrome/content/zotero/xpcom/ipc.js
+++ b/chrome/content/zotero/xpcom/ipc.js
@@ -30,6 +30,9 @@ 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 4917a22ee..e3f099de2 100644
--- a/chrome/content/zotero/xpcom/zotero.js
+++ b/chrome/content/zotero/xpcom/zotero.js
@@ -798,6 +798,8 @@ 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")) {
@@ -821,6 +823,7 @@ 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 8ddd7afd6..05442d784 100644
--- a/components/zotero-service.js
+++ b/components/zotero-service.js
@@ -423,6 +423,8 @@ 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
@@ -430,6 +432,7 @@ 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