diff --git a/CHANGELOG.md b/CHANGELOG.md
index 492d9270f..0bccbb1fe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - [build] Bumped electron version to v4.1.1 and updated .dmg installer background image in PR [1419](https://github.com/Microsoft/BotFramework-Emulator/pull/1419)
 - [ui-react] Added default disabled styling to checkbox control in PR [1424](https://github.com/Microsoft/BotFramework-Emulator/pull/1424)
 
+## Removed
+- [main] Removed custom user agent string from outgoing requests in PR [1427](https://github.com/Microsoft/BotFramework-Emulator/pull/1427)
+
 ## v4.3.3 - 2019 - 03 - 14
 ## Fixed
 - [client] Use correct casing for user id prop for web chat in PR [#1374](https://github.com/Microsoft/BotFramework-Emulator/pull/1374)
diff --git a/packages/app/main/src/appendCustomUserAgent.spec.ts b/packages/app/main/src/appendCustomUserAgent.spec.ts
deleted file mode 100644
index e5233f0b6..000000000
--- a/packages/app/main/src/appendCustomUserAgent.spec.ts
+++ /dev/null
@@ -1,58 +0,0 @@
-//
-// Copyright (c) Microsoft. All rights reserved.
-// Licensed under the MIT license.
-//
-// Microsoft Bot Framework: http://botframework.com
-//
-// Bot Framework Emulator Github:
-// https://github.com/Microsoft/BotFramwork-Emulator
-//
-// Copyright (c) Microsoft Corporation
-// All rights reserved.
-//
-// MIT License:
-// Permission is hereby granted, free of charge, to any person obtaining
-// a copy of this software and associated documentation files (the
-// "Software"), to deal in the Software without restriction, including
-// without limitation the rights to use, copy, modify, merge, publish,
-// distribute, sublicense, and/or sell copies of the Software, and to
-// permit persons to whom the Software is furnished to do so, subject to
-// the following conditions:
-//
-// The above copyright notice and this permission notice shall be
-// included in all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED ""AS IS"", WITHOUT WARRANTY OF ANY KIND,
-// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-//
-
-import { appendCustomUserAgent } from './appendCustomUserAgent';
-
-const mockVersion = 'v4.5.6';
-jest.mock('electron', () => ({
-  app: {
-    getVersion: () => mockVersion,
-  },
-}));
-
-it('should append a custom user agent to outgoing requests', () => {
-  const mockDetails = {
-    requestHeaders: {
-      'User-Agent': 'some/user/agent',
-    },
-  };
-  const callBack = jest.fn((...args: any[]) => null);
-  appendCustomUserAgent(mockDetails, callBack);
-
-  expect(callBack).toHaveBeenCalledWith({
-    cancel: false,
-    requestHeaders: {
-      'User-Agent': `some/user/agent botbuilder/emulator/${mockVersion}`,
-    },
-  });
-});
diff --git a/packages/app/main/src/appendCustomUserAgent.ts b/packages/app/main/src/appendCustomUserAgent.ts
deleted file mode 100644
index 2f9711e35..000000000
--- a/packages/app/main/src/appendCustomUserAgent.ts
+++ /dev/null
@@ -1,43 +0,0 @@
-//
-// Copyright (c) Microsoft. All rights reserved.
-// Licensed under the MIT license.
-//
-// Microsoft Bot Framework: http://botframework.com
-//
-// Bot Framework Emulator Github:
-// https://github.com/Microsoft/BotFramwork-Emulator
-//
-// Copyright (c) Microsoft Corporation
-// All rights reserved.
-//
-// MIT License:
-// Permission is hereby granted, free of charge, to any person obtaining
-// a copy of this software and associated documentation files (the
-// "Software"), to deal in the Software without restriction, including
-// without limitation the rights to use, copy, modify, merge, publish,
-// distribute, sublicense, and/or sell copies of the Software, and to
-// permit persons to whom the Software is furnished to do so, subject to
-// the following conditions:
-//
-// The above copyright notice and this permission notice shall be
-// included in all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED ""AS IS"", WITHOUT WARRANTY OF ANY KIND,
-// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-//
-
-import * as Electron from 'electron';
-
-export function appendCustomUserAgent(details: any, callback: (...args: any[]) => any): void {
-  const { requestHeaders = {} } = details;
-  const version = Electron.app.getVersion();
-
-  requestHeaders['User-Agent'] += ` botbuilder/emulator/${version}`;
-
-  callback({ cancel: false, requestHeaders });
-}
diff --git a/packages/app/main/src/main.ts b/packages/app/main/src/main.ts
index 6435318fd..d142d7e79 100644
--- a/packages/app/main/src/main.ts
+++ b/packages/app/main/src/main.ts
@@ -41,7 +41,6 @@ import { app, BrowserWindow, dialog, ipcMain, Rectangle, screen, systemPreferenc
 import { UpdateInfo } from 'electron-updater';
 import { Store } from 'redux';
 
-import { appendCustomUserAgent } from './appendCustomUserAgent';
 import { AppMenuBuilder } from './appMenuBuilder';
 import { AppUpdater } from './appUpdater';
 import { getStore } from './botData/store';
@@ -298,9 +297,6 @@ const createMainWindow = async () => {
     })
   );
 
-  // attach custom user agent string
-  mainWindow.webContents.session.webRequest.onBeforeSendHeaders(appendCustomUserAgent);
-
   // get reference to bots list in state for comparison against state changes
   let botsRef = store.getState().bot.botFiles;