Technologies

404 and 503 decoded: Here’s what those pesky internet error fails really mean

You can’t load a webpage you want, but those error codes are trying to tell you something. We’ll help you figure out what to do next.

It was Feb. 16 and I had two alarms set on my phone for Beyoncé’s Formation tour tickets. As they were bound to sell out in minutes, I was on the website, ready to refresh the page as soon as the clock struck 10 a.m. But when the critical moment came, the page only showed an ominous message: «503? Service requested is unavailable?» I refreshed the page frantically. What if I couldn’t get the tickets? Who knew when Beyoncé would tour again? But I got the same error over and over again.

I picked up my phone hoping to have more luck there, but I got the same message. Finally, after what felt like a bazillion refreshes and clicks, I was able to get through. There they were — the tickets I had been waiting months for. Whew! The purchase confirmation screen appeared and the nightmare ended. But I kept asking myself where that message came from. Was it something I did, or was the website just borked?

Those random-seeming website error numbers like 404, 503 and 301 you sometimes see after typing a URL can throw you off your groove or worse, ruin an urgent task (like buying Beyoncé tickets). Sometimes, like if you mistyped the URL, a simple text change can put you back in business. Other times, there may be a bigger issue — the server is down or there’s an internet outage.

To help you understand what to do the next time you see one of these online uh-ohs, I’ll break down the basics of those strange codes — even the ones that you might not be able to crack on your own. And if you’re fascinated by all of the code-lingo, you can always dig in deeper with a coding course for beginners.

404s and other common website errors: What they mean

Some website error codes are your fault (oops), but others are because of problems with the server that only the website’s administrator can fix. Chances are, you’ll see them with every refresh — it might help keep your annoyance at bay to understand why (but I doubt it).

404: One of the most common errors you’ll see, it means the page cannot be found. Nowadays, some sites will design its error code pages with cute puppies, links to other pages or a funny illustration to lighten your no doubt frustrated mood. Double-check the URL for typos and try again. If you’re typing the correct URL and you still have no luck, the page has been moved or deleted.

301: You may have heard of a «301 redirect,» but probably have never seen this code displayed on a site. Think of it as a smooth transition from one old URL to a new one, sort of like forwarding your mail. You should still see the webpage you wanted when this happens, but it likely has a different URL than the one you entered. It’s a permanent move, and even if you use the old URL, you’ll still be automatically routed to the new one. Bookmark the new URL for future reference.

400: This one is best known as a «bad request» for the user. On Google Chrome, you’ll get the message, «This page isn’t working at the moment» along with some guidance about contacting the website administrator. Usually, it’s caused by an error on your end. There may be a typo in the URL, the server may not understand your request, or the file you’re trying to upload is too big. Try clearing your cache and checking the URL for typos. If you have no luck, take Google’s advice.

410: This is the «Gone» status. You may see a message like, «This page does not exist,» or «Page deleted or gone.» There’s no problem on your end — you’ve got the right page, but the website administrator may have deleted it for good.

451: This code blocks you from seeing a URL for various legal reasons. According to a developer resource page from Mozilla (the maker of the Firefox browser), a person or organization may have made a legal demand to remove the content or the page may be blocked because of government censorship. You should see the legal reason on the page with the status code, but it’s not always guaranteed. If you’re determined to see the content, you may be able to get there with a few tech-savvy tactics — like a VPN or proxy server that acts as a tool to bypass the server’s restrictions.

503: You’ll likely see the message, «503 Service unavailable,» when a website’s server is down, so you won’t be able to access the site until it’s fixed. Reason being, the site’s server could be down for maintenance, too many people may be causing the site to overload, the site could have a bug or someone looking to cause trouble has taken the site offline. You won’t be able to access the site until it’s fixed so it’s best to try again later to see if the server issue is resolved.

200: This code you won’t see because it means that everything is OK. The site, its server and your browser are all working fine, so there’s no need to alert you there’s not a problem. The only place you’ll likely see it is in the code (or back end). In fact, most codes that start with a 2 are a good sign that the communication channel between your browser and the company’s server is working.

How can I fix website codes with images and videos?

It can be frustrating if you’re trying to play a video, upload or download media, but see error codes instead. More often than not it’s a user error, and it’s up to you to fix the problem. Sometimes you’ll see a small icon that looks like a picture in place of the video or image you’d hope to see. In that case, you’ll know something’s wrong.

If you get status code 415, it’s a red flag that the server doesn’t recognize the file type you’re using. Popular photo- and video-sharing sites will list the file types they support, typically on the Support page (here’s the list for YouTube). If yours isn’t listed, try converting the file to one of the approved formats before uploading it again.

Front end developer Allan Hernandez says that most common supported types are .mp3 and .mp4 for videos and .jpeg, .png, .svg and .web for images. If you’re uploading a video or image using one of the correct file formats, he says, it should be easy and error-free.

Another common problem occurs when you try to upload files that are too big for the server, also known as status code 413. In this case, it’s best to reduce the file size before uploading again.

Here are a few other common error codes you may come across with media and what they mean.

404: The media file has been moved or deleted.
403: The server cannot access your image or video — possibly because the firewall is blocking it.
429: You may have sent too many requests without giving the server time to process them. So, if you’ve clicked «upload» a bazillion times, you may get this code.

Are any errors my fault that I can fix?

Yes, there are two types of code errors: client and server. Most client errors start with a 4. You’ll need to fix something on your end before continuing. For example, the 403 code may mean the page is forbidden, or the web administrator restricts access to that page. You’ll need to go to another page or site.

Usually, if there’s an error, you’ll need to do one of these things.

1. Restart your computer, modem or router.

2. Check the URL for typos.

3. Visit a different URL.

Sometimes, other actions may be required, such as you need to pay to see gated content or, if you’ve clicked a button constantly, you just need to wait patiently because the request isn’t processing fast enough.

If an error starts with a 5, it’s the server’s problem and there may not be much you can do. Try contacting the website’s support to let them know you’re getting a server error.

Technologies

Google Gives Chrome an AI Side Panel and Lets Gemini Browse for You

The update also includes Nano Banana image tools and deeper integrations with Google apps like Gmail, Calendar, Maps and Flights.

Google is turning Chrome into something closer to a digital copilot.

In the next wave of Gemini updates rolling out, Google on Wednesday revealed a set of new AI-powered features coming directly to its browser, aimed at reducing the frustrations of exploring the internet each day. Built on Gemini 3, the updates introduce an always-available side panel, deeper app integrations, creative image tools and a new browser agent called auto browse that can complete multistep tasks on your behalf.

Essentially, Google wants Chrome to be like an AI wingman that browses, compares and multitasks for you.

Now you can automate browsing

To me, the standout new addition is auto browse, a browser agent designed to handle tedious and time-consuming chores. Instead of hopping between tabs, filling out forms or manually comparing prices of things like products or flights, you can ask Chrome to do the legwork.

Auto browse can research flights and hotels across different dates, collect documents, schedule appointments, manage subscriptions and help with tasks like renewing a driver’s license or filing expense reports.

In a live demo I saw, Product Lead Charmaine D’Silva used the new tools to plan a family vacation. Gemini compared destinations and prices across multiple travel sites, checked school calendars to see when her kids were off and lined up schedules to find workable travel windows. When it came time to book, though, D’Silva emphasized that the final decision and purchase were still hers, underscoring Google’s plan to keep humans in control for key tasks like booking and purchases.

The feature is rolling out to AI Pro and Ultra subscribers in the US now, signaling Google’s broader push toward more agentic AI experiences.

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A new side panel experience

Another update rolling out now is a redesigned Gemini side panel in Chrome, available across MacOS, Windows and Chromebook Plus. Instead of opening a separate tab, Gemini now lives alongside whatever you’re working on, making it easier to multitask without breaking your flow. Testers have used it to summarize reviews across sites, compare shopping options and juggle packed calendars while keeping their main task front and center.

AI image editing with Nano Banana

Chrome is also trying to become more creative. Google is bringing Nano Banana, its AI image editing and generation tool, directly into the browser. You can now edit and reimagine images you find on the web without downloading files or switching apps — whether that’s mocking up a living room redesign or turning raw data into an infographic at work.

Chrome connects with other Google apps

Under the hood, Gemini in Chrome is becoming more connected to the rest of Google’s ecosystem. Integrations with Gmail, Calendar, Maps, YouTube, Google Flights and Shopping will allow the assistant to pull in relevant context and take action across apps. Planning a trip, for example, could involve referencing an old email, checking flight options and drafting a follow-up email to your travel companions. Now all in one place.

More to come

Looking ahead, Google says personal intelligence is coming to Chrome in the coming months. With user opt-in, Gemini will remember context from past interactions to deliver more tailored, proactive help across the web, while giving you control over what data is connected and when.

Technologies

If You Drink Decaf, Read This: More Than 80,000 Keurig Pods Recalled

Here’s how to get a full refund if you bought these coffee pods.

If you’re a decaf K-Cup drinker, this message is for you. Keurig has recalled the McCafe Premium Roast Decaf Coffee K-Cup Pods because they may contain caffeine.

Here’s everything to know.

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What was recalled?

Keurig Dr Pepper voluntarily recalled 960 cartons of McCafe Premium Roast Decaf Coffee K-Cup Pods, according to a US Food and Drug Administration memo. The reason listed for the recall reads: «Product is labeled as decaf, but might contain caffeine.»

CNET chose McCafé Premium Roast as the best K-Cup, although the decaffeinated version was not included. It is unclear at this time how many states sold the cartons.

A representative for Keurig Dr Pepper did not immediately respond to a request for comment.

How to know if you have a recalled product

The recalled items will have the following information:

Best by date: 17 NOV 2026
Batch number: 5101564894
Material number: 5000358463
ASIN: B07GCNDL91
UPC: 043000073438

The recall is ongoing. If you have a recalled product, you can return it to your place of purchase for a full refund.

Technologies

The Samsung Galaxy Z TriFold’s Nearly $3,000 Price Might Unfold Your Whole Wallet

This double-folding phone will be the most expensive mainstream handset released in the US.

Samsung’s twin-hinged Galaxy Z TriFold is nearly on sale, coming before the Galaxy S26 launch next month. Starting Jan. 30, foldable phone fans who want the most advanced device in the US can pick one up, but they’ll have to pay a hefty price: The device starts at a jaw-dropping $2,900.

Yes, for over three times the price of a Galaxy S25, you can pick up the most advanced smartphone — and certainly the most expensive — Samsung has ever rolled out. Even the Galaxy Z Fold 7, which starts at $2,000 with 256GB of storage, only reaches $2,420 at the highest 1TB storage configuration.

As products across all industries get costlier, phone-makers have priced foldables in an even more premium tier than the most innovative flat smartphones (like the iPhone 17 Pro Max and Galaxy S25 Ultra). It seems Samsung will use the twin-hinged Galaxy Z TriFold to set an even higher price ceiling for smartphones.

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Anyone who buys the Galaxy Z TriFold will get one of the most technically impressive handsets released in the US. But is the technology worth the cost?

The Galaxy Z TriFold unfolds into a 10-inch inner display that rivals the screens of full-size tablets. It’s noticeably larger than the 8-inch inner screen on the single-hinged Galaxy Z Fold 7 foldable. Its two hinges, built of titanium, are tested to endure 200,000 folds, according to Samsung.

When unfolded, the Z TriFold is 3.9mm at its thinnest point. That’s slightly outdone by the slimmer Huawei Mate XT’s 3.6mm, which beat Samsung to market by an entire year with a trifold that’s not available in the US. That might be nearing the limit for phone thinness, as it’s barely enough to accommodate the USB-C port at the bottom of either device.

The Galaxy Z TriFold and Huawei Mate XT are roughly comparable in size and specs, though the Huawei phone’s EMUI operating system and the lack of familiar Google apps (due to the ban on US companies working with the Chinese phone-maker) mean Android fans may prefer Samsung’s. The Huawei foldable is also more expensive, starting at 3,499 euros (about $4,150 today), and may not be compatible with US carriers out of the box.

Read more: Galaxy Z TriFold vs. Huawei Mate XT: One Is the Most Versatile Phone I’ve Ever Used

The Galaxy Z TriFold has a customized Snapdragon 8 Elite chip, the same one that powers last year’s Galaxy S25 series. It won’t feature the latest Snapdragon 8 Elite Gen 5 silicon, which is likely to power this year’s most advanced Android handsets (potentially including the upcoming, but not yet announced, Samsung Galaxy S26 series).

The Galaxy Z TriFold will start at 512GB of storage and packs a 5,600-mAh battery, larger than the Z Fold 7’s 4,400-mAh capacity unit. It recharges at 45 watts, which is typical for Samsung phones, though other premium Android handsets have long ago surpassed that rate, like the OnePlus 15 with 80-watt charging. It has three rear cameras (a 200-megapixel main, a 12-megapixel ultrawide and a 10-megapixel telephoto) and comes in a single color, crafted black.

All told, the Galaxy Z Trifold offers only marginal upgrades over the Galaxy Z Fold 7, and its hardware will likely be surpassed soon when the Galaxy S26 series launches with newer chips.

At $1,000 to $2,000 above other Android phones and foldables, the Z TriFold seems to offer only a single advantage: its massive inner display. While undeniably a technical marvel, that’s not nearly enough added value for most people to justify the steep upsell on your standard smartphone, or even another book-style foldable. For folks who «crave» the most advanced phone on the market, though, maybe it’s worth the expense.