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.

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Technologies

Square Enix’s Next Game Blends Among Us-Like Murder Mystery With Bloody Carnage

Unveiled at Summer Game Fest, Killer Inn is an upcoming multiplayer murder mystery pitting players against each other in the search for the true killers.

Bet you didn’t have this one on your bingo list. Developed by Tactic Studios in partnership with Square Enix, the game was unveiled during the Summer Game Fest livestream, and it’s far from the famed RPG maker’s bread and butter. Killer Inn, as it’s called, is a multiplayer murder mystery that takes Among Us-like gameplay and ratchets it up by handing players knives, guns and many other weapons to kill or be killed while they search for the original killer.

Killer Inn might be one of those games that is best understood after playing a few matches, but even from the reveal trailer, there’s a lot going on. In each match, 24 players enter a sprawling castle-turned-hotel to determine who the real killers are as they’re picked off one by one. There’s deduction and mayhem aplenty.

Killer Inn’s play phases are patterned after detective-style games, from Among Us to Ultimate Werewolf to Mafia. A match begins with most players as cooperative participants («lambs,» in Killer Inn’s parlance) mixed with a few secret killers («wolves»). Players complete tasks to earn tokens redeemable for items and weapons, while the killers quietly go about their business — until someone discovers a body. On the corpse are clues left by the killer, so the lambs can try deducing the true culprit (or culprits).

Then it’s all about collecting clues and identifying the wolves — but unlike Among Us, there’s no group discussion to present evidence or vote them out. Killer Inn skips the parlor scene and dives straight into action: If you’re sure someone’s the killer, take them out. Use those token-bought guns and blades to put down the villain. Unless you accidentally murder one of your innocent teammates — in which case, you’re turned to stone for the rest of the match. Bummer.

Lambs have another win condition: assembling four keys to escape on the ship that brought them to the murder island. There are other mechanics, too, like finding relative safety in rooms with hotel staff, who will identify any wolves that kill lambs in their line of sight.

Players can choose between 25 premade characters that each have their own unique appearances and abilities, the latter of which improve as the match goes on, often reflecting the nefarious dark sides of the participants. For example, Winston is a surgeon who kills more efficiently with knives and, when leveled up, deals extra damage while covered in blood. The Otaku, by contrast, gains 25 HP from finding clues and eventually builds resistance to status effects. Levels don’t carry over between matches — everyone starts fresh at level one.

Killer Inn doesn’t have a release date, but the game will kick off a closed beta test over Steam in the near future.

Technologies

Resident Evil 9 Revealed at Summer Game Fest After Early Fake-Out

Resident Evil Requiem is the next entry in Capcom’s survival horror series.

After a fake-out earlier in Summer Game Fest on Friday, Resident Evil Requiem, or Resident Evil 9, was shown for the first time.

The new title is the first mainline entry since Capcom released Resident Evil Village in 2021, and is rumored to feature series stalwart Leon Kennedy. In the trailer, the only person we saw was a character named Grace Ashcroft, who works for the FBI and appears to have ties to Raccoon City.

For the most hardcore Resident Evil fans, the name Ashcroft will ring a bell. Alyssa Ashcroft was one of the survivors of the online-only title, Resident Evil Outbreak for the PS2. Alyssa was a journalist who was trapped in Raccoon City during the events of Resident Evil 2, and she, along with other survivors, had to escape the city before it was destroyed.

Grace is Alyssa’s daughter, and in the trailer, she is going to visit the Remwood Hotel, where Alyssa was murdered. Later in the trailer, images from what appears to be the remnants of a destroyed Raccoon City are shown, so it appears Resident Evil 9 will return to where the series started.

Leon’s return is a big deal for the series, which has made some of its best games with him in the starring (or co-starring) role. He first showed up as a rookie cop in Resident Evil 2, which built on the original game’s success with more story and improved monsters and level design.

He showed up again in Resident Evil 4, which took the series in a new direction by introducing an over-the-shoulder perspective, instead of the usual static camera angles and tank controls. Leon was also one of several playable protagonists in Resident Evil 6, a game that seemed to forget about its survival horror roots. We mostly don’t talk about that one.

But the 2019 remake of Resident Evil 2 was an excellent return to form, bringing RE4’s gameplay and much better graphics to a fan-favorite entry. The RE4 remake was a similar success.

Resident Evil Requiem is set to drop Feb. 27, 2026, for PC, PS5 and Xbox Series consoles, but we’re hoping to get our hands on it this weekend. If you want to catch up on older Resident Evil games, Capcom is having a sale that includes basically all the games, including Village and the three remakes.