diff --git a/build/builtin/main.js b/build/builtin/main.js
index 3a11d363f96..34df1fab6df 100644
--- a/build/builtin/main.js
+++ b/build/builtin/main.js
@@ -29,7 +29,6 @@ app.once('ready', () => {
 		webPreferences: {
 			nodeIntegration: true,
 			contextIsolation: false,
-			webviewTag: true,
 			enableWebSQL: false,
 			nativeWindowOpen: true
 		}
diff --git a/src/vs/base/browser/ui/sash/sash.ts b/src/vs/base/browser/ui/sash/sash.ts
index d1db81e7aae..217d3f912b5 100644
--- a/src/vs/base/browser/ui/sash/sash.ts
+++ b/src/vs/base/browser/ui/sash/sash.ts
@@ -362,13 +362,7 @@ export class Sash extends Disposable {
 			return;
 		}
 
-		// Select both iframes and webviews; internally Electron nests an iframe
-		// in its <webview> component, but this isn't queryable.
-		const iframes = [
-			...getElementsByTagName('iframe'),
-			...getElementsByTagName('webview'),
-		];
-
+		const iframes = getElementsByTagName('iframe');
 		for (const iframe of iframes) {
 			iframe.style.pointerEvents = 'none'; // disable mouse events on iframes as long as we drag the sash
 		}
diff --git a/src/vs/code/electron-main/app.ts b/src/vs/code/electron-main/app.ts
index 9606a8f1d1d..12b89c84688 100644
--- a/src/vs/code/electron-main/app.ts
+++ b/src/vs/code/electron-main/app.ts
@@ -51,7 +51,7 @@ import { ElectronURLListener } from 'vs/platform/url/electron-main/electronUrlLi
 import { serve as serveDriver } from 'vs/platform/driver/electron-main/driver';
 import { IMenubarMainService, MenubarMainService } from 'vs/platform/menubar/electron-main/menubarMainService';
 import { registerContextMenuListener } from 'vs/base/parts/contextmenu/electron-main/contextmenu';
-import { sep, posix, join, isAbsolute } from 'vs/base/common/path';
+import { posix, join, isAbsolute } from 'vs/base/common/path';
 import { joinPath } from 'vs/base/common/resources';
 import { localize } from 'vs/nls';
 import { Schemas } from 'vs/base/common/network';
@@ -200,41 +200,6 @@ export class CodeApplication extends Disposable {
 		// !!! DO NOT CHANGE without consulting the documentation !!!
 		//
 		app.on('web-contents-created', (event, contents) => {
-			contents.on('will-attach-webview', (event, webPreferences, params) => {
-
-				const isValidWebviewSource = (source: string | undefined): boolean => {
-					if (!source) {
-						return false;
-					}
-
-					const uri = URI.parse(source);
-					if (uri.scheme === Schemas.vscodeWebview) {
-						return uri.path === '/index.html' || uri.path === '/electron-browser-index.html';
-					}
-
-					const srcUri = uri.fsPath.toLowerCase();
-					const rootUri = URI.file(this.environmentMainService.appRoot).fsPath.toLowerCase();
-
-					return srcUri.startsWith(rootUri + sep);
-				};
-
-				// Ensure defaults
-				delete webPreferences.preload;
-				webPreferences.nodeIntegration = false;
-
-				// Verify URLs being loaded
-				// https://github.com/electron/electron/issues/21553
-				if (isValidWebviewSource(params.src) && isValidWebviewSource((webPreferences as { preloadURL: string }).preloadURL)) {
-					return;
-				}
-
-				delete (webPreferences as { preloadURL: string | undefined }).preloadURL; // https://github.com/electron/electron/issues/21553
-
-				// Otherwise prevent loading
-				this.logService.error('webContents#web-contents-created: Prevented webview attach');
-
-				event.preventDefault();
-			});
 
 			contents.on('will-navigate', event => {
 				this.logService.error('webContents#will-navigate: Prevented webcontent navigation');
diff --git a/src/vs/platform/windows/electron-main/window.ts b/src/vs/platform/windows/electron-main/window.ts
index 1062fda4e76..fd54a2aa061 100644
--- a/src/vs/platform/windows/electron-main/window.ts
+++ b/src/vs/platform/windows/electron-main/window.ts
@@ -193,7 +193,6 @@ export class CodeWindow extends Disposable implements ICodeWindow {
 					enableWebSQL: false,
 					spellcheck: false,
 					nativeWindowOpen: true,
-					webviewTag: true,
 					zoomFactor: zoomLevelToZoomFactor(windowSettings?.zoomLevel),
 					...this.environmentMainService.sandbox ?
 
diff --git a/test/unit/electron/index.js b/test/unit/electron/index.js
index 99bb64e92a4..d13ea9c6d87 100644
--- a/test/unit/electron/index.js
+++ b/test/unit/electron/index.js
@@ -169,8 +169,7 @@ app.on('ready', () => {
 			contextIsolation: false,
 			enableWebSQL: false,
 			spellcheck: false,
-			nativeWindowOpen: true,
-			webviewTag: true
+			nativeWindowOpen: true
 		}
 	});