How to Fix Claude White Screen of Death

Why Does Claude Load a Blank White Screen?

A blank white screen (often called the "White Screen of Death") occurs when the browser successfully downloads the basic HTML wrapper of claude.ai but fails to fetch, parse, or execute the critical JavaScript bundles required to render the application interface.

This failure is typically caused by one of three things: 1. CDN Out-of-Sync Errors: Anthropic has pushed an update to their web app, but your browser is attempting to load older, cached JavaScript assets that no longer exist or are blocked by CORS policies. 2. Corrupted Service Workers: A local service worker is stuck in an infinite loop trying to cache or serve outdated app files. 3. Extension Interference: Ad-blockers, script-blockers, or privacy extensions are misidentifying Claude's essential runtime scripts as tracking code and blocking them.

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How to Fix the Claude White Screen Error

Follow these targeted troubleshooting steps in order to resolve the blank page error and restore the web interface.

1. Trigger a Cache-Bypassing Hard Reload Your browser's default refresh button simply re-reads files from the local storage disk. You must force the browser to request fresh assets directly from Anthropic's CDN. * **Google Chrome / Edge (Windows):** Press `Ctrl` + `F5` or `Ctrl` + click the Reload icon. * **Google Chrome / Edge (macOS):** Press `Cmd` + `Shift` + `R` or hold `Shift` while clicking the Reload icon. * **Mozilla Firefox (All OS):** Press `Ctrl` + `Shift` + `R` (Windows) or `Cmd` + `Shift` + `R` (macOS). * **Apple Safari:** Hold `Shift` and click the Reload button on the address bar.

2. Test in Private/Incognito Mode Running Claude in a private window disables most third-party browser extensions and ignores your existing cookie cache, which helps isolate the cause of the white screen. 1. Open an Incognito window (`Ctrl` + `Shift` + `N` on Windows, `Cmd` + `Shift` + `N` on Mac). 2. Navigate directly to `https://claude.ai/login`. 3. If Claude loads correctly, your issue is caused by either a corrupted browser cookie or a conflicting extension. Move to steps 3 and 4.

3. Clear Site-Specific Storage in Chrome Do not clear your entire browser history, as this will log you out of all your other websites. Instead, clear storage specifically for Anthropic. 1. Go to `claude.ai` (even if it is white). 2. Click the lock/settings icon directly to the left of the URL in your browser's address bar. 3. Click on **Site settings** or **Cookies and site data**. 4. Click **Manage cookies and site data** or click **Clear data** / **Delete** next to the `claude.ai` entry. 5. Restart your browser and reload the page.

4. Delete the Claude Service Worker If step 3 fails, an orphaned Service Worker may be hijacking the page load. You must delete it manually. 1. Right-click anywhere on the blank white page and select **Inspect** to open Developer Tools. 2. Click on the **Application** tab (you may need to click the `>>` icon if it's hidden). 3. In the left-hand column, click on **Service Workers**. 4. Look for the service worker associated with `claude.ai`. 5. Click the **Unregister** button on the right side of the screen. 6. Reload the page.

5. Temporarily Disable Content Blockers Some ad-blockers (like uBlock Origin, AdGuard, or built-in browser shields like Brave Shields) block critical API routing elements because of aggressive privacy filters. * Click on your adblocker's icon in the browser toolbar and toggle it to "Off" or "Disabled" for `claude.ai`. * If you are using Brave, click the lion icon in the address bar and toggle **Shields are UP** to **DOWN**.

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Troubleshooting App and Network Blocks

If you have performed all the browser troubleshooting steps above and the page is still entirely white, the issue may be network-based: * DNS Resolution Issues: Your local DNS provider might be failing to resolve Anthropic’s third-party script assets (which are hosted on Cloudflare's CDN). Change your network DNS settings to Google Public DNS (8.8.8.8 and 8.8.4.4) or Cloudflare DNS (1.1.1.1). * VPN Routing Conflicts: Some VPN nodes route traffic through IP addresses that have been flagged for automated abuse. Disable your VPN or switch to a different country server to refresh your IP reputation.

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When to Escalate

If you have completed all of these steps and the screen remains blank across multiple devices on the same Wi-Fi connection, Anthropic’s CDN is likely undergoing a regional propagation issue or a routing outage.

Check status.anthropic.com or independent tracking sites to see if other users are reporting web console outages. If there is no documented outage, contact Anthropic support via their help center, detailing that you have already unregistered the service worker and cleared site storage without success.