Android 404 Error: Causes and Fixes

What Does Error 404 Mean

Error 404 (Not Found) is a standard response code of the HTTP protocol. It means that the server you are contacting understood your request but cannot find the requested resource (page, image, API file). On Android, this error may appear:

• In a mobile browser (Chrome, Firefox, Samsung Internet) when trying to open a website.
• Inside a mobile app that loads content from the internet (for example, in the "Help", "News" section, or when authorizing via a web widget).
• When using network utilities (for example, Postman, Advanced REST Client).

The client application (browser or app) correctly displays this code, signaling that the problem is not on your device's side, but on the server's side or in the request transmission chain.

Causes

Error 404 rarely occurs due to problems with your Android device. Main causes:

1. Incorrect or outdated URL. You or the application are accessing a link that never existed, was changed, or was deleted.
2. The resource was deleted or moved on the server. The website or service owner deleted the page without setting up a redirect to the new address.
3. Caching issues. The browser or app stores an old, outdated version of the link or metadata, resulting in a request for a non-existent path.
4. Network restrictions or filtering. Your ISP, corporate network, or antivirus may block or redirect requests, causing the server to receive a distorted URL and respond with 404.
5. Application configuration error. Some applications may incorrectly form internal web requests (for example, due to an outdated version or a bug).
6. Temporary failures on the server or CDN side. Content may be temporarily unavailable due to delivery issues (Content Delivery Network).

Solutions

We recommend performing the steps sequentially, starting with the simplest and fastest.

Method 1: Check and Correct the Address (URL)

This is the first and most obvious step.

1. Double-check the link. Copy the address from the source (email, message) and paste it into the address bar. Ensure there are no extra characters, spaces, or typos.
2. Simplify the URL. Try going to the site's root (for example, https://example.com), then manually find the needed section via the site's navigation. The site structure may have changed.
3. Use a search engine. Find the desired site or page via Google or Yandex to get an up-to-date link.

Method 2: Clear the App's Cache and Data

Corrupted cache is a frequent cause of "stuck" links.

1. For the browser (Chrome):
   • Open Settings → Apps → Chrome → Storage.
   • Tap Clear cache (this will not delete history or passwords).
   • Restart the browser and try again.
2. For another browser or app:
   • Find the app in Settings → Apps.
   • Go to the Storage section.
   • Use the Clear cache and, if needed, Clear data buttons (the latter will delete the app's settings and local files—be careful).

Method 3: Check Network Settings and Disable VPN/Proxy

The network may be distorting requests.

1. Switch between networks. If you are on Wi-Fi, try mobile data (and vice versa). If it works on one network but not the other, the problem is in the first network's settings.
2. Disable VPN and proxy. Any third-party software for bypassing blocks may route requests incorrectly. Disable it temporarily for testing.
3. Reset network settings (emergency case). In Settings → System → Reset → Reset Wi-Fi, mobile & Bluetooth (this will delete saved Wi-Fi networks and Bluetooth pairs).

Method 4: Change the DNS Server

An unreliable DNS server from your ISP may return incorrect IP addresses.

1. Connect to a Wi-Fi network (for mobile data, DNS setup is more complex and depends on the carrier).
2. Long-press the network name → Modify network → check Show advanced options.
3. In the IP settings field, select Static.
4. Scroll down to the DNS 1 and DNS 2 fields.
5. Enter public DNS servers, for example:
   • Google DNS: 8.8.8.8 and 8.8.4.4
   • Cloudflare DNS: 1.1.1.1 and 1.0.0.1
6. Save and reconnect to the network.

Method 5: Use Incognito Mode or a Different Browser

This will help determine if the cache or extensions are to blame.

1. Open Chrome (or your browser) and create a new tab in Incognito mode (three-dot icon → New incognito tab).
2. Enter the problematic URL. If the page loads, the issue is with the standard cache or installed extensions.
3. Install an alternative browser (for example, Firefox or Microsoft Edge) from Google Play. Try opening the link in it. If it works, the problem is specific to your main browser.

Method 6: Check the Site's Status and Wait

If all the above steps didn't help, the problem is most likely on the server side.

1. Check if the site is up. Use online services like downforeveryoneorjustme.com. Enter the site's domain (without http:// and the path). If the service shows the site is globally accessible, the problem is with a specific page or your link.
2. Wait. If the site recently moved content or the administrator deleted a page, redirects or fixes may not yet be configured. Try again later.
3. Contact support. If you are sure the page should exist (for example, it's your own site or a payment page), report the problem to the administrator, providing the exact URL.

Prevention

• Save links in bookmarks. This eliminates errors when typing manually.
• Regularly update your browser and apps. Developers fix bugs related to handling network requests.
• Do not use unreliable VPNs/proxies for everyday browsing.
• Periodically clear your browser's cache (every 1-2 months), especially if you notice strange website behavior.
• Check links before publishing (if you are an administrator), using tools for checking broken links (for example, Screaming Frog SEO Spider for websites).