Khalil wrote: As-salamu alaykum,
I have resolved the problem :)
You don't have to disable anything, just to get the Captcha - ReCaptcha plugin working on K2 comment you have to follow these steps:

1 - ON www.google.com/recaptcha Go to
- USE reCAPTCHA ON YOUR SITE
- ADD Gmail account if you don't have, or log in if you have.
- Go MY ACCOUNT -> + Add a New Site
- Create a reCAPTCHA key -> ADD your Domain -> Create a Key.
- Copy (Public Key and then you will copy the Private Key)

2 - On your admin panel go to:
- Component -> K2 -> Parameters -> Comments-> Active reCaptcha -> Yes.
- Go to Component -> K2 -> Parameters -> Advanced -> Anti-spam.
- Past the two Key that you have from Google. (Public and Private Key)
-> Refresh you site and you got it ^_^

IF YOU STILL DON'T HAVE THE CAPTCHA WORKING:
Make sure you have enabled the K2 plugin and Comments on the Category options.
That should be resolving your problem.

- IF, IF that is still not working:
- Go to your site
- Click " F12 " on Google Chrom / Control+F12 (Firebugs, Firefox)
- Refresh your web site
- If you have a JavaScript errors try to find what is your problems and solutions.
- Last thing if you don't have any JS problem, You should re-install joomla xD

That is all
Thank you, your brother from Tunisia :)

Many thanks this worked for me.

Does anyone have a fix for this yet?

I tried your idea Brad, and it still won't work. As it stands now, no one can register on my site because of this.

Odd thing is, it worked last week and the only thing I have done is instal JFBConnect. I was actually testing this out and decided to make a test account when I ran into this issue. Problem was, I could not get 'facebook login' to work, but I did figure out that if I disabled K2 captcha it worked fine. Problem with that is, I would end up with this message:
Empty solution not allowed.

So I followed the steps in the other post. and this is what I end up with:
The words you typed did not match the ones displayed. Please try again.

Is anyone with this problem using JFBConnect?

After understanding that k2 is using it's own recaptcha.php library and that it relies on jQuery to be working, I can now get it working also with jQuery 1.9.1 loaded. But you need to disable the recaptcha plugin, select "None Selected" in the Global configuration -> site. And in k2 parameters you need to put your keys.

I wish that K2 would use the default captcha selected in global options. That way you could use other recapcha modules like PlayThru recaptcha in an easy way.

I still have'nt got any recaptcha in my comments, but I don't need it enabled and have'nt tried to hard to make it work. But It seems not to be working after enabling it in k2 parameters comments tab.

So, having discovered a similar issue in form submissions using the system recaptcha plugin, I managed to figure out my own issue.

It seems that recaptcha requests via IPv6 have some sort of issue going on, so any box with a v6 address is likely going to have socket errors trying to verify a captcha response.

The solution to this is to either remove IPv6 from the machine running Joomla, which isn't terribly optimal, or hack any references in the recaptcha libraries to not make requests via IPv6.

This can be done by changing the fsockopen call made in /administrator/components/com_k2/lib/recaptchalib.php on line 91

from
...@fsockopen($host, $port,...
to
...@fsockopen(gethostbyname($host), $port,...

Similarly, the default system recaptcha plugin at /plugins/captcha/recaptcha/recaptcha.php can be changed on line 189.

As gethostbyname() doesn't support IPv6, it gets around the problem.

Probably not the best solution, but until requests made using IPv6 are reliable, this will work until someone goes about adding an actual option to determine what protocol(s) the request will use.

For what it's worth, 3.0.2 and 2.6.5 appear to be just fine with both recaptcha plugins (system / k2) enabled.


Brad

Having a similar issue here.

Joomla 3.0.3
K2 2.6.5

Disabled the system default Captcha - ReCaptcha plugin.
Set K2 to load a local copy of jQuery v1.8.2.
Changed Captcha setting in Users Manager Options to '- None Selected -'.
Updated public and private keys in the K2 -> advanced ->anti-spam settings section and set enable reCaptcha to 'Yes'.

The captcha to solve appears in the comment section as expected.

Entering a comment and leaving the captcha solution empty results in the message 'The words you typed did not match the ones displayed. Please try again.'

Entering any solution (correct or not) and submitting does nothing.

I've confirmed that my public and private keys are for the domain in question. Similarly, I am not getting any scripting in the browser debugger for Chrome or IE10.

Anyone have any suggestions?


Brad

I still get the error:

I have installed:

1. Joomla 2.5.8
2. K2 2.6.5
3. LoginRadius to use social media to connect,'

When I login through LoginRadius and one of the social media connectors I get the error:
"The words you typed did not match the ones displayed. Please try again"

I have followed the above instructions.
1. Disabled the Captcha ReCaptcha Extension
2. Disabled the Captcha ReCaptcha Plugin
3. Set User Configuration - Captcha "None selected"
4. Set K2 Parameters for Comments to Enable reCaptcha in Comments to "Yes"
5. Copied and Pasted Keys to K2 Advanced Parameters
6. Enabled reCaptcha on Registration Form
7.Enable StopForumSpam.com integration on the user registration form = Yes

However, I still get the message:
"The words you typed did not match the ones displayed. Please try again"

Any help would be GREAT.

Thanks,

Erik Lindquist

Hi ,
Anyone here who could help me out with the captcha ?
Joomla 2.5.9
K2 v2.6.5

What i have done :
- Publish the Captcha - ReCaptcha plugin (core)
- Insert the public and private key provided bij google ( advanced , K2 settings)
- Set recaptcha to "yes" ( comments , K2 settings)
- Enabled comments (item, categorie K2)

Captcha only shows up on register page ? notting to see in comments.

I checked with the default template also (no result).
when i put "errors on" in the site settings no error shows up.

Anyone who could point me to the fix of this, or advice where to look.
I also cheked:
forumpost A
captcha fix
forumpost B

Thanks for reading my problem here
Best Regards Wimm

thanks a lot. it helped! well explained also. :)

Wow! very good explanation. It works
Thanks - Merci. J'ai gagné du temps.

In my K2 2.6.3 the rating only shows a rotating arrows. The stars shining yellow, but the rating will not save. The command function has also problems.
recaptcha is enabled but it is not shown.

I ´m not able to post a command :(

This is to infom that we had enable the K2-reCaptcha by going to the K2- Parameter and under the comment tab enabling the reCaptcha and adding the keys. But this feature in not working when we pass the comment an screenshot of the issue is attached with this to get a better understanding on what the issue is a Special character appears under the "submit comment" button.

@ Steve Scott
Thank you very much !
This is the only that works in k2!

Thank you Khalil, I've been trawling forums for days trying to sort my User Registration Captcha! It worked fine in Chrome, but intermittently wouldnt show in IE8, then when installed Joo Captcha instead, it displayed but kept saying "words dont match" . Did as you suggested in your post and all works fine.

Is the Joomla ReCaptcha plugin enabled? At set the default to ReCaptcha at Global Configuration page.

See this post here

I disabled the Captcha - ReCaptcha plugin as suggested, still didn't work. Then I realized I had created the recaptcha keys for a specific domain and I was working on a test site... ooppsiiee.

So I just created global keys and works fine. I even tried to enable the plugin back on and still works :P

As-salamu alaykum,
I have resolved the problem :)
You don't have to disable anything, just to get the Captcha - ReCaptcha plugin working on K2 comment you have to follow these steps:

1 - ON www.google.com/recaptcha Go to
- USE reCAPTCHA ON YOUR SITE
- ADD Gmail account if you don't have, or log in if you have.
- Go MY ACCOUNT -> + Add a New Site
- Create a reCAPTCHA key -> ADD your Domain -> Create a Key.
- Copy (Public Key and then you will copy the Private Key)

2 - On your admin panel go to:
- Component -> K2 -> Parameters -> Comments-> Active reCaptcha -> Yes.
- Go to Component -> K2 -> Parameters -> Advanced -> Anti-spam.
- Past the two Key that you have from Google. (Public and Private Key)
-> Refresh you site and you got it ^_^

IF YOU STILL DON'T HAVE THE CAPTCHA WORKING:
Make sure you have enabled the K2 plugin and Comments on the Category options.
That should be resolving your problem.

- IF, IF that is still not working:
- Go to your site
- Click " F12 " on Google Chrom / Control+F12 (Firebugs, Firefox)
- Refresh your web site
- If you have a JavaScript errors try to find what is your problems and solutions.
- Last thing if you don't have any JS problem, You should re-install joomla xD

That is all
Thank you, your brother from Tunisia :)

Has anyone figure out why the images does not appear? I got the same issue.

I need to launch this site today.

anyone have any suggestions?

Theo, did you get this figured out?

I disabled the captacha plugin.
Enabled and Pasted in the recaptcha keys into the K2 / Parameters / Advanced / Anti-spam Settings

But it is not showing up

On K2 login box, no register option appears. can't get register option to appear when login fails. Everything seems to be enabled that needs to be. Previously the catpcha option was not working and then disappeared as well. It was not returning the right results so I was switching between the captcha recaptcha and the system recaptcah to see where the problem was. After the captcha disappeared, then the register option disappeared after that. I have teh captcha-recaptcha enabled.

these are the options that appear in the login box

Username
Password
Remember me
Forgot your password?
Forgot your username?

I have Joomla 2.5.7 and K2 2.5.7. I did the reinstall after akeeba backup. Fixed one problem. Didn't fix the other which tells me it is not a K2 issue. I include screen shot of problem. No idea what I did to create the problem or what I need to do. Suggestions would be much appreciated. I could also get them to register through joomla and then move them over, but hoping not to.