Joomla You Have Entered the Wrong Captcha Sequence. Please Try Again.
Content index
1. Introduction
2. Error tolerance
iii. Troubleshooting
four. Why you lot should not employ any CAPTCHA
Introduction
A CAPTCHA is a challenge-response test able to decide whether the user is human or a computer, in order to avoid automatic and massive SPAM messages.
Personally, I adopt not to badger the user asking him to prove he is a homo.
Fox Contact has beautiful anti-spam feature, without the need of using CAPTCHA.
Nonetheless, for those who prefer the CAPTCHA, they can enable it under "Security" > "Classic CAPTCHA".
Different the nigh of the other contact forms, in one case that the captcha solution is correct, but in instance other mandatory fields are invalid, the captcha field disappears by the grade, avoiding to stress the user with another captcha when he already proved to be able to solve it.
That style the user focuses on the important fields until a successful submission is done.
This increases your conversion ratio, and makes your customers happier.
Fault tolerance
Sometimes the captcha solution contains ambiguous characters, such equally "O". You lot are non certain whether it'southward the alphabetic character "oh" or the number "zero".
For that reason, Play a trick on Contact has a error tolerance to facilitate the user. It assumes that
fifty (letter "el") = I (alphabetic character "i") = 1 (number "one")
0 (number "zero") = O (letter "oh")
q (lette "Q") = g (letter of the alphabet "G") = 9 (number "nine")
S (letter of the alphabet "es") = 5 (number "five")
B (letter "b") = eight (number "8")
For that reason, no affair whether you are dealing with a math or alfanumeric captcha, if the solution is "58", and then "SB" volition be accepted also.
Troubleshooting
When the born CAPTCHA does not validate the code entered, in that location is something wrong with your Joomla session.
Cheque the field "Cookie Domain" in Joomla Global Configuration, it must comprise an empty value for your Joomla session to work correctly, therefore articulate the value and relieve the configuration.
You lot will probably experience issues while logging-in into your Joomla front-stop as well.
Ensure that you are able to login at http://yoursite/index.php?selection=com_users
Also it has been reported that, the Joomla plugin "Arrangement - EU e-Privacy Directive" by Michael Richey five 2.14 may corrupt the existing Joomla sessions.
In our tests, disabling this plugin and so enabling it once again, has solved the problem, only due to its unpredictable behaviour, our communication is to cull a different "Cookie Law" plugin.
Why y'all should non use whatsoever CAPTCHA
Curt answer
Trick Contact implements a wonderful anti-spam feature. It blocks spam attempts based on the message content, from both humans and bots, without the need of any sort of CAPTCHA. Practise yourself a favour, give information technology a endeavour.
Total answer
Some people apply a CAPTCHA in the endeavour to block the spam, only ironically they ends lowering their conversion ratio and getting spam anyhow. If this seems surprising to you lot, please read on.
A CAPTCHA is effective in blocking automated account creation.
In the area of forms, instead, the use of the CAPTCHA is based on the wrong assumption that humans e'er send ham, while bots e'er send spam, therefore using a CAPTCHA to separate humans by the computers, automatically separates ham from spam.
ane. Some people send spam
There are literally millions of Asiatic people who manually send spam by profession. A CAPTCHA detects them as humans, and lets pass their spam.
2. Some computers ship ham
Disabled people rely on their software / calculator to browse the Net and fill up out the forms. A CAPTCHA detects them as bots, and cake them or cause them serious problems (how can a bullheaded man read the content of an epitome on the screen?).
three. Often they work together, making your CAPTCHA useless
Almost unremarkably the spam is sent automatically by bots, helped by humans who solve the CAPTCHA challenges. Suppose that a spambot site makes illegal contents available for the download. On a download request the bot loads your class, passes the CAPTCHA image to the unsuspecting user, asking him to answer to start the download. When the bot get its solution, it is used to complete the form submission, while the user gets his illegal file. Everybody wins (at your expenses).
iv. Information technology drastically reduces your conversions
Everybody knows that users bounciness from the website within the get-go 10 seconds if they don't observe what they want, or if the page loads also slowly.
How long practice you think that an average user tin can resist when you put this barrier in front of him?
About users will immediately carelessness your site frustrated and infuriated. Very overnice shot! :)
Of grade Google knows that problem. That'southward why ReCaptcha2 is by far simpler. We are on the right style. Just another few years, and any CAPTCHA concept will probably disappear at all.
Notwithstanding there is no reason for stressing genuine people (and get back unreliable results) asking them to evidence they are humans. If your problem is the spam, merely check the content for spam.
Comparing to regular electronic mail, think of your anti spam organization that is protecting your email inbox correct now.
Do you lot think that information technology is based on reCAPTCHA asking the sender to prove to be a homo? No sir, information technology's based on a content analyzer.
reCAPTCHA2 is an external component provided by Google Inc. Use it with the understanding that information technology is not responsive, information technology can not be styled, it is nearly not configurable, and it is as ho-hum as a dead sloth. To get it working, information technology requires a non-trivial configuration and approachable server-to-server http connections, that some hosting providers do not allow. Since it is a Google's closed source project, no one except Google itself has the required skills to provide technical back up on it. Please refer to the official Google reCAPTCHA website for any question about reCAPTCHA.
Security questions
Someone has proposed simple security questions such as "what is 8 + iv ?" instead of showing a CAPTCHA.
Well, according to the CAPTCHA definition, a "security question" is indeed a CAPTCHA. "A CAPTCHA is a challenge-response test able to determine whether the user is homo or a computer."
Withal, computers are perfectly able to solve questions similar "8 + iv = ". They also calculates the typical homo computation time for that task. In this case it is: 0.97 seconds for a immature adult. So a bot not only can provide a correct respond, but it can also intentionally delay a fair amount of fourth dimension doing that.
If this seems surprising to you, accept a look at this .
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Source: https://www.fox.ra.it/forum/20-form-fields/10009-captcha.html