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’s NYT Mini Crossword Answers for Saturday, May 17

Here are the answers for The New York Times Mini Crossword for May 17.

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

Today’s NYT Mini Crossword has a goofy shape, but it’s pretty easy to solve. 6-Down mystified me, but the other answers helped me fill it in. Need some help with today’s Mini Crossword? Read on. And if you could use some hints and guidance for daily solving, check out our Mini Crossword tips.

The Mini Crossword is just one of many games in the Times’ games collection. If you’re looking for today’s Wordle, Connections, Connections: Sports Edition and Strands answers, you can visit CNET’s NYT puzzle hints page.

Read more: Tips and Tricks for Solving The New York Times Mini Crossword

Let’s get at those Mini Crossword clues and answers.

Mini across clues and answers

1A clue: «Link in ___» (promotional catchphrase on social media)
Answer: BIO

4A clue: They’re ground in a coffee grinder
Answer: BEANS

6A clue: Bike riders’ headwear
Answer: HELMETS

8A clue: Variety of tomato whose name is also a meat
Answer: BEEFSTEAK

10A clue: Shoe spec that describes this puzzle?
Answer: EXTRAWIDE

11A clue: «Cha-ching, nothin’ to it!»
Answer: EASYMONEY

Mini down clues and answers

1D clue: Church spot where bats hang out
Answer: BELFRY

2D clue: The first three words of «Green Eggs and Ham,» straight from the narrator
Answer: IAMSAM

3D clue: Boxing punch combo
Answer: ONETWO

4D clue: Purple slices in a salad
Answer: BEETS

5D clue: Oktoberfest glass
Answer: STEIN

6D clue: Prefix with decimal, in coding
Answer: HEXA

7D clue: One-named hit singer with 1985’s «Smooth Operator»
Answer: SADE

8D clue: Spelling ___
Answer: BEE

9D clue: Paper with the answers
Answer: KEY

How to play more Mini Crosswords

The New York Times Games section offers a large number of online games, but only some of them are free for all to play. You can play the current day’s Mini Crossword for free, but you’ll need a subscription to the Times Games section to play older puzzles from the archives.

Technologies

I’m Putting Apple AirTags in Every Suitcase I Own, and They’re on Sale Now at Amazon

I track everything from keys to cars using Apple AirTags. And now that you can get a four-pack for almost $20 off at both Amazon and Best Buy, it’s a good time to stock up.

I knew something was wrong as I stood at the baggage carousel after a return flight from France and my trusty rolling suitcase was nowhere to be seen, even as my fellow passengers collected their bags one by one. My suitcase never did drop onto the carousel that day.

However, I knew there was no reason to panic. Before handing over my suitcase at check-in at the Charles de Gaulle Airport, I had tucked a sophisticated little tracking device into it. So, with just a few taps on my iPhone, I could see that my bag had apparently never left Paris. (Merde!)

Over the years, I’ve come to rely on Apple’s AirTags to keep track of just about all my easy-to-lose valuables. They’re not only good for suitcases; I also use them to track keys, bikes and even my car. I tell everyone who will listen that you can never have too many of these handy devices. That’s why I think it’s worth taking full advantage of sales at both Amazon and Best Buy that slash the price of a four-pack of AirTags down to $80.

Here’s how the Apple AirTag that was in my suitcase on that fateful trip works. It uses an ingenious method of tracking itself, detecting its location from nearby iPhones and using them to anonymously piggyback the coordinates to a secure server where I could look it up on my iPhone. Until just a few years ago, this would have seemed like a scene straight out of a spy movie.

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Instead of wondering if my belongings were stuck on an abandoned luggage cart or strewn across the tarmac, I could see in almost real time that my suitcase was still chilling at Charles de Gaulle airport in Paris. I was able to calmly tell the airline my bag didn’t make the flight, and it made arrangements to have it delivered to me a few days later.

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Apple AirTags are all about peace of mind

By itself, an AirTag isn’t much. A 1.26-inch smooth round puck that looks like a glossy white breath mint, it sinks to the bottom of a bag or dangles from a key chain (with a compatible key ring, sold separately). It’s meant to disappear.

Activating the AirTag was a simple process of pairing with my iPhone. And then, because it obviously doesn’t really do anything out of the box, I forgot about it.

But the next time I couldn’t find my keys? Sorcery. My iPhone didn’t just tell me they were somewhere nearby — it walked me directly to them, thanks to the AirTag’s built-in Ultra Wideband chip. Suddenly, all that time I’d spent retracing my steps and overturning couch cushions in the past felt like ancient history.

Now I have AirTags in or attached to every significant item I’d want to keep track of: My everyday laptop bag, my camera backpack, the suitcase I use most when traveling, my key chain, my car and a smaller sling bag I take on walks. I can pull up the Find My app on any of my Apple devices (or sign in to iCloud on any web browser) and see where my items are and the last time the AirTags registered their locations.

AirTags aren’t just for my everyday items. People I know in the movie business tell me that AirTags are tossed into nearly every bag and Pelican crate, not solely to ensure that the valuable equipment inside doesn’t walk away but to quickly differentiate equipment amid similar looking containers. Some of my friends also attach AirTags to their pets’ collars (though experts say there are better ways to track pets).

AirTags are also useful for things that you want to keep close by

Being able to detect my luggage a continent away provided a sense of relief, to be sure. But at the local level, my AirTags will also trigger an alert when I get too far away from them. For example, if I accidentally forget my camera bag in the car when I stop somewhere for lunch, a Find My notification appears telling me I’ve left it behind. It works the same for newer AirPods models as well.

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Sharing is now a big part of AirTag tracking

My family has two cars, and I wanted to be able to track them both. But it used to be inconvenient to pair the AirTag in the car my wife drives to her iPhone (and the one in my car to my iPhone).

To guard against unwanted tracking, an AirTag will notify nearby iPhones of its existence, so whenever I drove my wife’s car without her in it, I got a notification that an AirTag was traveling with me. (If the owner is near the AirTag, the alert does not appear.)

However, ever since the release of iOS 17, AirTags are shareable, which solves this problem. I shared my AirTag with my wife, and she with me, so regardless of which car I’m driving, I can find it more easily in a crowded parking lot without getting constant, unnecessary alerts.

A new feature to AirTags that arrived with iOS 18.2 is the ability to temporarily share an AirTag’s location with someone I trust. In my luggage example above, if the suitcase was in the airport with me, but the airport’s staff hadn’t yet been able to locate it (not uncommon during peak travel times), I could share its location with an attendant who could quickly retrieve it from areas inaccessible to the public.

Apple AirTag specs

Diameter: 1.26 inches (31.9 mm)
Height: 0.31 inches (8 mm)
Weight: 0.39 ounces (11 g)
Splash, water and dust resistance: Rated IP67 (maximum depth of 1 meter up to 30 minutes)
Connectivity: Bluetooth 5.0
Battery: Replaceable CR2032 coin cell battery

The only minor annoyance about AirTags

An AirTag includes Bluetooth, the U1 Ultra Wideband chip and an NFC chip to share basic details when it’s in Lost Mode. That’s all powered by a CR2032 coin cell battery, which in my experience lasts roughly a year before I need to replace it.

I get notified when a battery is starting to get low, although there’s no gauge to see how much is left until it goes into the red. And it’s easy to change batteries. But my small fleet of AirTags means I need to swap multiple ones each year. I buy them in packs of 20 that I slowly work through.

AirTags also make great gifts

Apple AirTags consistently appear in our gift guides throughout the year because you can always find another use for one. They’re often reduced in price when sold in packs of four. And there’s an ever-growing ecosystem of ways to mount them, from sturdy vaults that adhere to a car to discrete fabric holders that will keep your favorite classic bomber jacket from flying away. Whenever I show someone how I use AirTags on a bag or keychain, I kind of wish I had a pocket of AirTags to hand out because once someone sees how it works, they’re sold.

Looking to save on more things that’ll make your life easier? Check out our roundup of all the best early Memorial Day deals going on now. We’ve also gathered all the best AirTag accessories of 2025 from across the web so you can get the most use out of them.