diff --git a/src/lib/client/adapters/webcontainer/index.js b/src/lib/client/adapters/webcontainer/index.js
index 3b98cd5ca..274ef154d 100644
--- a/src/lib/client/adapters/webcontainer/index.js
+++ b/src/lib/client/adapters/webcontainer/index.js
@@ -4,7 +4,6 @@ import AnsiToHtml from 'ansi-to-html';
 import * as yootils from 'yootils';
 import { escape_html, get_depth } from '../../../utils.js';
 import { ready } from '../common/index.js';
-import { isWebContainerSupported } from './utils.js';
 
 /**
  * @typedef {import("../../../../routes/tutorial/[slug]/state.js").CompilerWarning} CompilerWarning
@@ -26,10 +25,6 @@ let vm;
  * @returns {Promise<import('$lib/types').Adapter>}
  */
 export async function create(base, error, progress, logs, warnings) {
-	if (!isWebContainerSupported()) {
-		throw new Error('WebContainers are not supported by Safari 16.3 or earlier');
-	}
-
 	progress.set({ value: 0, text: 'loading files' });
 
 	const q = yootils.queue(1);
diff --git a/src/lib/client/adapters/webcontainer/utils.js b/src/lib/client/adapters/webcontainer/utils.js
deleted file mode 100644
index 1d6c6a569..000000000
--- a/src/lib/client/adapters/webcontainer/utils.js
+++ /dev/null
@@ -1,30 +0,0 @@
-/**
- * Checks if WebContainer is supported on the current browser.
- * This function is borrowed from [stackblitz/webcontainer-docs](https://github.com/stackblitz/webcontainer-docs/blob/369dd58b2749b085ed7642f22108a9bcbcd68fc4/docs/.vitepress/theme/components/Examples/WCEmbed/utils.ts#L4-L29)
- */
-export function isWebContainerSupported() {
-	const hasSharedArrayBuffer = 'SharedArrayBuffer' in window;
-	const looksLikeChrome = navigator.userAgent.toLowerCase().includes('chrome');
-	const looksLikeFirefox = navigator.userAgent.includes('Firefox');
-	const looksLikeSafari = navigator.userAgent.includes('Safari');
-
-	if (hasSharedArrayBuffer && (looksLikeChrome || looksLikeFirefox)) {
-		return true;
-	}
-
-	if (hasSharedArrayBuffer && looksLikeSafari) {
-		// we only support Safari 16.4 and up so we check for the version here
-		const match = navigator.userAgent.match(/Version\/(\d+)\.(\d+) (?:Mobile\/.*?)?Safari/);
-		const majorVersion = match ? Number(match?.[1]) : 0;
-		const minorVersion = match ? Number(match?.[2]) : 0;
-
-		return majorVersion > 16 || (majorVersion === 16 && minorVersion >= 4);
-	}
-
-	// Allow overriding the support check with localStorage.webcontainer_any_ua = 1
-	try {
-		return Boolean(localStorage.getItem('webcontainer_any_ua'));
-	} catch {
-		return false;
-	}
-}
diff --git a/src/routes/tutorial/[slug]/Loading.svelte b/src/routes/tutorial/[slug]/Loading.svelte
index 7563a6514..264af6f74 100644
--- a/src/routes/tutorial/[slug]/Loading.svelte
+++ b/src/routes/tutorial/[slug]/Loading.svelte
@@ -1,6 +1,4 @@
 <script>
-	import { isWebContainerSupported } from "$lib/client/adapters/webcontainer/utils.js";
-
 	/** @type {boolean} */
 	export let initial;
 
@@ -14,54 +12,59 @@
 	export let status;
 </script>
 
-<div class="loading" class:error>
+<div class="loading">
 	{#if error}
-		{#if !isWebContainerSupported()}
-			<p>This app requires modern web platform features. Please use a browser other than Safari.</p>
-		{:else}
+		<div class="error">
+			<div>
+				<h2>Yikes!</h2>
+				{#if error.message === 'Your browser does not support all necessary features'}
+					<p>
+						This app requires modern web platform features. Please use a browser other than Safari.
+					</p>
+				{:else if /firefox/i.test(navigator.userAgent)}
+					<p>
+						We couldn't start the app. Please ensure
+						<a
+							target="_blank"
+							rel="noreferrer"
+							href="https://support.mozilla.org/en-US/kb/third-party-cookies-firefox-tracking-protection"
+						>
+							third party cookies
+						</a> are enabled for this site, and disable Enhanced Tracking Protection.
+					</p>
+					<p>
+						If you have 'Delete cookies and site data when Firefox is closed' enabled in
+						<code>about:preferences#privacy</code>, make sure <code>learn.svelte.dev</code> is included
+						as an exception.
+					</p>
+				{:else if /chrome/i.test(navigator.userAgent) && !/edg/i.test(navigator.userAgent)}
+					<p>
+						We couldn't start the app. Please ensure third party cookies are enabled for this site —
+						click the
+						<svg
+							xmlns="http://www.w3.org/2000/svg"
+							viewBox="0 0 24 24"
+							style="width: 1em; height: 1em; position: relative; top: 0.1em; margin: 0 0.2em; transform: scale(1.2)"
+						>
+							<title>eye</title>
+							<path
+								fill="#666"
+								d="M11.83,9L15,12.16C15,12.11 15,12.05 15,12A3,3 0 0,0 12,9C11.94,9 11.89,9 11.83,9M7.53,9.8L9.08,11.35C9.03,11.56 9,11.77 9,12A3,3 0 0,0 12,15C12.22,15 12.44,14.97 12.65,14.92L14.2,16.47C13.53,16.8 12.79,17 12,17A5,5 0 0,1 7,12C7,11.21 7.2,10.47 7.53,9.8M2,4.27L4.28,6.55L4.73,7C3.08,8.3 1.78,10 1,12C2.73,16.39 7,19.5 12,19.5C13.55,19.5 15.03,19.2 16.38,18.66L16.81,19.08L19.73,22L21,20.73L3.27,3M12,7A5,5 0 0,1 17,12C17,12.64 16.87,13.26 16.64,13.82L19.57,16.75C21.07,15.5 22.27,13.86 23,12C21.27,7.61 17,4.5 12,4.5C10.6,4.5 9.26,4.75 8,5.2L10.17,7.35C10.74,7.13 11.35,7 12,7Z"
+							/>
+						</svg>
+						icon in the URL bar or go to
+						<code>chrome://settings/cookies</code> and add <code>learn.svelte.dev</code> to 'Sites that
+						can always use cookies'.
+					</p>
+				{:else}
+					<p>
+						We couldn't start the app. Please ensure third party cookies are enabled for this site.
+					</p>
+				{/if}
+			</div>
+
 			<small>{error.message}</small>
-			<h2>Yikes!</h2>
-			{#if /firefox/i.test(navigator.userAgent)}
-				<p>
-					We couldn't start the app. Please ensure
-					<a
-						target="_blank"
-						rel="noreferrer"
-						href="https://support.mozilla.org/en-US/kb/third-party-cookies-firefox-tracking-protection"
-					>
-						third party cookies
-					</a> are enabled for this site, and disable Enhanced Tracking Protection.
-				</p>
-				<p>
-					If you have 'Delete cookies and site data when Firefox is closed' enabled in
-					<code>about:preferences#privacy</code>, make sure <code>learn.svelte.dev</code> is included
-					as an exception.
-				</p>
-			{:else if /chrome/i.test(navigator.userAgent) && !/edg/i.test(navigator.userAgent)}
-				<p>
-					We couldn't start the app. Please ensure third party cookies are enabled for this site —
-					click the
-					<svg
-						xmlns="http://www.w3.org/2000/svg"
-						viewBox="0 0 24 24"
-						style="width: 1em; height: 1em; position: relative; top: 0.1em; margin: 0 0.2em; transform: scale(1.2)"
-					>
-						<title>eye</title>
-						<path
-							fill="#666"
-							d="M11.83,9L15,12.16C15,12.11 15,12.05 15,12A3,3 0 0,0 12,9C11.94,9 11.89,9 11.83,9M7.53,9.8L9.08,11.35C9.03,11.56 9,11.77 9,12A3,3 0 0,0 12,15C12.22,15 12.44,14.97 12.65,14.92L14.2,16.47C13.53,16.8 12.79,17 12,17A5,5 0 0,1 7,12C7,11.21 7.2,10.47 7.53,9.8M2,4.27L4.28,6.55L4.73,7C3.08,8.3 1.78,10 1,12C2.73,16.39 7,19.5 12,19.5C13.55,19.5 15.03,19.2 16.38,18.66L16.81,19.08L19.73,22L21,20.73L3.27,3M12,7A5,5 0 0,1 17,12C17,12.64 16.87,13.26 16.64,13.82L19.57,16.75C21.07,15.5 22.27,13.86 23,12C21.27,7.61 17,4.5 12,4.5C10.6,4.5 9.26,4.75 8,5.2L10.17,7.35C10.74,7.13 11.35,7 12,7Z"
-						/>
-					</svg>
-					icon in the URL bar or go to
-					<code>chrome://settings/cookies</code> and add <code>learn.svelte.dev</code> to 'Sites that
-					can always use cookies'.
-				</p>
-			{:else}
-				<p>
-					We couldn't start the app. Please ensure third party cookies are enabled for this site.
-				</p>
-			{/if}
-		{/if}
+		</div>
 	{:else}
 		<svg width="107" height="128" viewBox="0 0 107 128">
 			<path
@@ -118,8 +121,11 @@
 	}
 
 	.error {
-		align-items: start;
-		justify-content: start;
+		width: 100%;
+		height: 100%;
+		display: flex;
+		flex-direction: column;
+		justify-content: space-between;
 	}
 
 	h2 {