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18 votes
Accepted

Cloudflare CAPTCHA for Tor Browser

Thanks for your patience while we looked into this situation - it sounds like it's been very stressful for you. Our intention is not to prevent TOR access on our sites generally. After raising this ...
Catija's user avatar
  • 109k
13 votes
Accepted

Stack Overflow CAPTCHA-Check fails - Oops! Robot detection failed

Short version: we fat-fingered something while doing some routine settings maintenance, which meant that for the "captcha keys" setting (and only this setting), we had setting values for ...
Marc Gravell's user avatar
  • 93.1k
13 votes
Accepted

How can I cheat the reputation system?

Well - lemme let you in on a secret. YEARS ago, I discovered a way of getting reputation fast. I added an RSS feed of the front page on Super User, and would find one question every day at least where ...
Journeyman Geek's user avatar
12 votes
Accepted

Every site requesting verification that I'm human

Thanks for reporting this issue! This is related to the recent announcement - Stack Exchange network sites’ IP addresses may change in the coming weeks - so it's on our end, not yours! As you've ...
Catija's user avatar
  • 109k
11 votes
Accepted

reCaptcha v1 is shutting down on March 31, but SEDE still uses it

A fix is merged now and seems to be live (thanks Nick!)
Tim Stone's user avatar
  • 58.2k
10 votes

Human verification page not loading in China

One solution is given by Minecraft users which might work here too... Use the gooreplacer browser extension to replace www.google.com/recaptcha (blocked in China) with recaptcha.net/recaptcha (not ...
Rebecca J. Stones's user avatar
10 votes

Why can't SE use a non-Google captcha that invades my privacy less?

My question is simple. Are there others who are concerned about this mandatory third-party tracking, who would prefer an in-house / on-site captcha? Yes. I understand that bots are a problem. ...
forest distrusts StackExchange's user avatar
9 votes
Accepted

Cloudflare protection is triggering on Stack Overflow authentication API routes

Sorry it took a while to get to me and then hunt down the issue but it should now be resolved. Part of the issue is that the managed challenge from Cloudflare was intermittent, making tracking down ...
Josh Zhang's user avatar
  • 10k
8 votes
Accepted

Why don't we improve captcha?

That Captcha is provided by Google, and what it does is much more than having a user check a box. In the background, when you click that checkbox, Google uses all the information it has on the actions ...
Mad Scientist's user avatar
8 votes

How to use Stack Exchange without letting Google track me through its reCAPTCHA?

Btw I get this problem whenever I use the setupVPN firefox extension.(No other website asks me for captcha when I use that extension unlike tor which usually get's me in trouble.) Might be the core ...
Journeyman Geek's user avatar
7 votes

How do I submit a Stack Exchange app or get support when the CAPTCHA is broken?

As Nick noted in the comments, the captcha wasn't configured correctly for Stack Apps on our end. This has been fixed, so you should be able to submit your app now. Sorry for the inconvenience, and ...
Adam Lear's user avatar
  • 160k
7 votes

Please don't expect users to recognize American street scenes

I'm declining this because, as others have pointed out, your specific request about the challenge you received being Americanized is not anything we can change. Google controls the challenges that you ...
animuson's user avatar
  • 190k
7 votes
Accepted

Got captcha'd for asking a question again after an outage

There are many variables that go into whether we show a CAPTCHA or not. But that aside, I don't see how our code would be able to tell that there was an unplanned outage, or an error, or anything ...
Adam Lear's user avatar
  • 160k
6 votes
Accepted

Why am I prompted for a CAPTCHA even though I didn't trip any of the rate limits?

According to the comments, you are tethering your phone. It is likely that your phone's data provider is doing carrier-grade NAT, which makes you share your IP address with a lot of other users at ...
Kevin's user avatar
  • 5,907
4 votes

Please don't expect users to recognize American street scenes

A large proportion of users are not from America, have never been to America, and might not even recognize these pictures as American: they certainly don't know whether yellow=taxi is something that's ...
Anonymous's user avatar
  • 1,356
4 votes

Human verification page not loading in China

I recently posted a question asking about CAPTCHA in China on StackExchange websites. The solution appeared to be "SE doesn't have this option because it would involve necessarily rolling their own ...
PR4v1's user avatar
  • 71
4 votes

How to pass "I'm not a robot"

If you are having problems with getting past the "I'm not a robot" Captcha, make sure that your JavaScript is enabled. I had to go into the network to enable mine last night to fix a similar problem ...
Paulette Pollitt's user avatar
4 votes
Accepted

Clicking reCAPTCHA checkbox causes crash in IE11

I know this is an old question but as it was never answered: Your details show that the cause of the crash is an access violation: Exception Code: c0000005 Exception Data: 00000008 #define ...
Remko's user avatar
  • 156
3 votes

CAPTCHA impossible to solve due to device limitations

I had the same copy-pasting problem on my tablet, except it did allow me to paste, but it messed up all the spacing and formatting. I was able to fix this by reset of the device to factory settings, ...
Josh Bender's user avatar
3 votes

How to pass "I'm not a robot"

On the page where you’ve encountered “I’m not a robot” Recaptcha, look at the element’s code. Find a link that begins with www.google.com/recaptcha/api2/anchor. Copy the "k" parameter from ...
Harshal Benake's user avatar
2 votes

Human verification page not loading in China

I had this happen using Firefox Android in desktop view with privacy settings enabled, I could see the Captcha Banner but not the checkbox. I disabled "Request Desktop Site" and the page reloaded (...
Rob's user avatar
  • 17.9k
2 votes

CAPTCHA not displaying on "Human verification"

I just ran into this problem with Firefox 89.0. All I had to do was click the "X" on the upper right of the "Human verification" popup, and then the "I'm not a robot" ...
pacoverflow's user avatar
  • 5,524
2 votes

CAPTCHA doesn't present words

OK, the source of the bug appears to be this code block in Area 51 HTML source code for the captcha page: <script type="text/javascript" src="http://api.recaptcha.net/challenge?k=...
Shadow Wizard's user avatar
1 vote

Human verification test for answering a question (or: how on earth does Stack Exchange calculate spam risk?)

I don't see any bug here. There are two likely reasons why you got that Captcha: Submitted the answer less than 5 seconds after starting to type it. Answer has suspicious content, which is very short ...
Shadow Wizard's user avatar
1 vote

Running a query in Data Explorer returns a JSON string {"captcha":true}

I encountered the same issue on Windows 10 + Chrome Version 105.0.5195.102. One way to circumvent the issue that worked for me was opening an incognito window in Chrome and run the SEDE query there.
Franck Dernoncourt's user avatar
1 vote

Do not repeatedly require trusted contributors to solve captchas when they attempt to post

Based on our current roadmap, this isn't work that we will take on, as it doesn't coincide with functional areas that we plan to improve in the near future. We recognize this can be an annoyance, but ...
Des's user avatar
  • 4,411
1 vote

CAPTCHA not displaying on "Human verification"

I had this same issue in Firefox. It was casued by having tracking protection turned on. I was able to fix it by going to "Preferences" and then to "Privacy and Security" And temporarily disabling "...
Math Man's user avatar
  • 111

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