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

Today Only You Can Get the Super Mario Galaxy 2-Pack at $14 Off

Enjoy two of Nintendo’s best Mario games in one package with a decent amount off.

Best Buy has a deal on at the moment that knocks the price of Super Mario Galaxy and Mario Galaxy 2 on Nintendo Switch down to $56. That’s a $14 discount, which is a lot on a first-party Nintendo game.

Nintendo Switch games are notorious for never really going down in price, which makes every deal that happens worth at least considering. Last time this was on sale, it was for $59; this is $3 cheaper than that, making the value even better. That’s two all-time-classic games for $28 each, basically, which is fantastic.

The only problem with this is that it’s a Best Buy daily deal, which means that it runs out tonight. So, if you do want to pick this up at this price, you’re going to need to be quick.

In his review, CNET’s Scott Stein was a big fan of both revamped Mario titles included in this bundle, but less so the $70 asking price. This deal goes a long way to helping fix that problem and gives you the chance to add two classic Mario titles to your collection at a discount.

Originally released on the Wii, both Super Mario Galaxy and Galaxy 2 have been updated with higher-resolution visuals, an improved interface and new content, so there’s never been a better time to play them. And unlike the originals, you can play these Switch games anywhere and at any time.

Why this deal matters

Mario games are like no other, and they’re great for adults and kids alike. This bundle includes two of the best, and right now you can pick it up at a price that makes them an even better buy than they already were. Whether you played them the first time around, you’re looking to see what all the fuss was about or want to introduce them to a new generation of Mario fans, this is the deal for you.

Technologies

I’ve Seen It With My Own Eyes: The Robots Are Here and Walking Among Us

The «physical AI» boom has created a world of opportunity for robot makers, and they’re not holding back.

It’s been 24 years since CNET first published an article with the headline The robots are coming. It’s a phrase I’ve repeated in my own writing over the years — mostly in jest. But now in 2026, for the first time, I feel confident in declaring that the robots have finally arrived.

I kicked off this year, as I often do, wandering the halls of the Las Vegas Convention Center and its hotel-based outposts on the lookout for the technology set to define the next 12 months. CES has always been a hotbed of activity for robots, but more often than not, a robot that makes a flashy Vegas debut doesn’t go on to have a rich, meaningful career in the wider world.

In fact, as cute as they often are and as fun as they can be to interact with on the show floor, most robots I’ve seen at CES over the years amount to little more than gimmicks. They either come back year after year with no notable improvements or are never seen or heard from again.

In more than a decade of covering the show, I’ve been waiting for a shift to occur. In 2026, I finally witnessed it. From Hyundai unveiling the final product version of the Boston Dynamics Atlas humanoid robot in its press conference to Nvidia CEO Jensen Huang’s focus on «physical AI» during his keynote, a sea change was evident this year in how people were talking about robots.

«We’ve had this dream of having robots everywhere for decades and decades,» Rev Lebaredian, Nvidia’s vice president of Omniverse and simulation told me on the sidelines of the chipmaker’s vast exhibition at the glamorous Fontainebleau Hotel. «It’s been in sci-fi as long as we can remember.»

Throughout the show, I felt like I was watching that sci-fi vision come to life. Everywhere I went, I was stumbling upon robot demos (some of which will be entering the market this year) drawing crowds, like the people lining up outside Hyundai’s booth to see the new Atlas in action.

So what’s changed? Until now, «we didn’t have the technology to create the brain of a robot,» Lebaredian said.

AI has unlocked our ability to apply algorithms to language, and it’s being applied to the physical world, changing everything for robots and those who make them.

The physical AI revolution

What truly makes a robot a robot? Rewind to CES 2017: I spent my time at the show asking every robotics expert that question, sparked by the proliferation of autonomous vehicles, drones and intelligent smart home devices.

This exercise predated the emergence of generative AI and models such as OpenAI’s ChatGPT, but already I could see that by integrating voice assistants into their products, companies were beginning to blur the boundaries of what could be considered robotics.

Not only has the tech evolved since that time, but so has the language we use to talk about it. At CES 2026, the main topic of conversation seemed to be «physical AI.» It’s an umbrella term that can encompass everything from self-driving cars to robots.

«If you have any physical embodiments, where AI is not only used to perceive the environment, but actually to take decisions and actions that interact with the environment around it … then it’s physical AI,» Ahmed Sadek, head of physical AI and vice president of engineering at chipmaker Qualcomm told me.

Autonomous vehicles have been the easiest expression of physical AI to build so far, according to Lebaredian, simply because their main challenge is to dodge objects rather than interact with them. «Avoiding touching things is a lot easier than manipulating things,» he said.

Still, the development of self-driving vehicles has done much of the heavy lifting on the hardware, setting the stage for robot development to accelerate at a rapid pace now that the software required to build a brain is catching up.

For Nvidia, which worked on the new Atlas robot with Boston Dynamics, and Qualcomm, which announced its latest robotics platform at CES, these developments present a huge opportunity.

But that opportunity also extends to start-ups. Featured prominently at the CES 2026 booth of German automotive company Schaeffler was the year-and-a-half-old British company Humanoid, demonstrating the capabilities of its robot HMND 01.

The wheeled robot was built in just seven months Artem Sokolov, Humanoid’s CEO, told me, as we watch it sort car parts with its pincerlike hands. «We built our bipedal one for service and household much faster — in five months,» Sokolov added.

Humanoid’s speed can be accounted for by the AI boom plus an influx of talent recruited from top robotics companies, said Sokolov. The company has already signed around 25,000 preorders for HMND 01 and completed pilots with six Fortune 500 companies, he said.

This momentum extends to the next generation of Humanoid’s robots, where Sokolov doesn’t foresee any real bottlenecks. The main factors dictating the pace will be improvements in AI models and making the hardware more reliable and cost effective.

Humanoid hype hits its peak

Humanoid the company might have the rights to the name, but the concept of humanoids is a wider domain.

By the end of last year, the commercialization of humanoid robots had entered an «explosive phase of growth,» with a 508% year-on-year increase in global market revenue to $440 million, according to a report released by IDC this month.

At CES, Qualcomm’s robot demonstration showed how its latest platform could be adapted across different forms, including a robotic arm that could assemble a sandwich. But it was the humanoids at its booth that caused everyone to pull out their phones and start filming.

«Our vision is that if you have any embodiment, any mechatronic system, our platform should be able to transform it to a continuously learning intelligent robot,» said Qualcomm’s Sadek. But, he added, the major benefit of the humanoid form is its «flexibility.»

Some in the robotics world have criticized the focus on humanoids, due to their replication of our own limitations. It’s a notion that Lebaredian disagrees with, pointing out that we’ve designed our world around us and that robots need to be able to operate within it.

«There are many tasks that are dull, dangerous and dirty — they call it the three Ds — that are being done by humans today, that we have labor shortages for and that this technology can potentially go help us with,» he said.

We already have many specialist robots working in factories around the world, Lebaredian added. With their combination of arms, legs and mobility, humanoids are «largely a superset of all of the other kinds of robots» and, as such, are perfect for the more general-purpose work we need help with.

The hype around robots — and humanoids in particular — at CES this year felt intense. Even Boston Dynamics CEO Robert Playter acknowledged this in a Q&A with reporters moments after he unveiled the new Atlas on stage.

But it’s not just hype, Playter insisted, because Boston Dynamics is already demonstrating that they can put thousands of robots in the market. «That is not an indication of a hype cycle, but actually an indication of an emerging industry,» he said.

A huge amount of money is being poured into a rapidly growing number of robotics start-ups. The rate of this investment is a signal that the tech is ready to go, according to Nvidia’s Lebaredian.

«It’s because, fundamentally, the experts, people who understand this stuff, now believe, technically, it’s all possible,» he said. «We’ve switched from a scientific problem of discovery to an engineering problem.»

Robot evolution: From industry to home

From what I observed at the show, this engineering «problem» is one that many companies have already solved. Robots such as Atlas and HMND 01 have crossed the threshold from prototype to factory ready. The question for many of us will be as to when will these robots be ready for our homes.

Playter has openly talked about Boston Dynamics’ ambitions in this regard. He sees Atlas evolving into a home robot — but not yet. Some newer entrants to the robotics market — 1X, Sunday Robotics and Humanoid among them — are keen to get their robots into people’s homes in the next couple of years. Playter cautions against this approach.

«Companies are advertising that they want to go right to the home,» he said. «We think that’s the wrong strategy.»

The reasons he listed are twofold: pricing and safety. Playter echoed a sentiment I’ve heard elsewhere: that the first real use for home humanoid robots will be to carry out care duties for disabled and elderly populations. Perhaps in 20 years, you will have a robot carry you in and out of bed, but relying on one to do so when you’re in a vulnerable state poses «critical safety issue,» he said.

Putting robots in factories first allows people to work closely with them while keeping a safe distance, allowing those safety kinks to be ironed out. The deployment of robots at scale in industrial settings will also lead to mass manufacturing of components that will, at some point, make robots affordable for the rest of us, said Playter (unlike 1X’s $20,000 Neo robot, for example).

Still, he imagines the business model will be «robots as a service,» even when they do first enter our homes. Elder care itself is a big industry with real money being spent that could present Boston Dynamics with a market opportunity as Atlas takes its first steps beyond the factory floor.

«I spent a lot of money … with my mom in specialty care the last few years,» he said. «Having robots that can preserve autonomy and dignity at home, I think people will actually spend money — maybe $20K a year.»

The first «care» robots are more likely to be companion robots. This year at the CES, Tombot announced that its robotic labrador, Jennie, who first charmed me back at the show in 2020, is finally ready to go on sale. It served as yet another signal to me that the robots are ready to lead lives beyond the convention center walls.

Unlike in previous years, I left Vegas confident that I’ll be seeing more of this year’s cohort of CES robots in the future. Maybe not in my home just yet, but it’s time to prepare for a world in which robots will increasingly walk among us.

Technologies

Today’s Wordle Hints, Answer and Help for Jan. 29, #1685

Here are hints and the answer for today’s Wordle for Jan. 29, No. 1,685.

Looking for the most recent Wordle answer? Click here for today’s Wordle hints, as well as our daily answers and hints for The New York Times Mini Crossword, Connections, Connections: Sports Edition and Strands puzzles.

Today’s Wordle puzzle was a tough one for me. I never seem to guess three of the letters in this word. If you need a new starter word, check out our list of which letters show up the most in English words. If you need hints and the answer, read on.