Frequently asked questions

Dear users, here are the answers to the questions many of you ask via our feedback form.

1. The browser shows an ERR_NAME_NOT_RESOLVED error in the console.

   This error message says that the anti-captcha.com server is unavailable to you.
   The anti-captcha.com service is at fault, or there's something wrong with your internet connection.
   There are only a few things we can recommend:

   • If you use a proxy, disable it and see whether the error disappears.
   • Conversely, you can turn some proxies on because their connections might be more stable for the server.
   • Restart your router.
   • Also, we googled and found an excellent article about how to solve the ERR_NAME_NOT_RESOLVED issue.

2. I see a Captcha for this domain is restricted (ERROR_HIGH_DEMAND_DOMAIN) error when solving captchas on coinlist.co.

   This error comes with a page link where the anti-captcha.com service describes the situation.
   We can NOT affect this behavior, it's an anti-captcha.com service decision.
   Please make sure you comply with all of the requirements: a minimum account balance of $1000 and a minimum bid per 1000 captchas of $100.

3. The browser shows a CRX_REQUIRED_PROOF_MISSING error on install.

   Please follow the instructions in the Installation guide for AntiCaptcha plugin for Chrome, Opera, and Edge from CRX web page. Especially paragraphs (0) and (0.5).

4. I get the following error: "Customer did not enable Funcaptcha in the Customer Area: API Settings"

   To make this task type work in this plugin, you must first enable Funcaptcha Proxyless tasks on the API settings web page.

5. Can I set the plugin options (API key) without opening the settings menu?

   Yes!
   Please note, there's a "/js/config_ac_api_key.js" file where you can set the anti-captcha.com API key and almost any other plugin setting. More info in the A way to explicitly register the Anti-Captcha service key for Selenium paragraph.
   The js file is a handy option if, for example, you install the extension using a ZIP archive in Selenium Webdriver.
   Alternatively, if you use the CRX, you can try the API messaging in the plugin (see setOptions.

6. The Incorrect incoming format error

   This error appears only for testing the (free) captchas we provide. It isn't shown for payed captchas. We're making every effort to fix it ASAP, so please try again later.

7. Does this extension work in Selenium headless mode?

   Not really. It's not possible to run Selenium in the headless mode with extension support. At least for now.
   But you can try our JS script that solves Recaptcha 2 only. Find out more in the article Example of solving reCAPTCHA 2 without installing an extension. Some of our users use it for iMacros, but it's suitable for any automation tool. The page above has an example of how to use it with Puppeteer.
   A better option would be using our extension with the Selenium driver in headful mode since the extension supports all captcha types and always has the latest features and fixes.

8. Error Captcha provider reported that the additional variable token has expired. You need to restart this web page.

   You can see such a message for Geetest captcha.
   This is because the target website generates a disposable token to draw a Geetest widget, which allows you to "show" a Geetest captcha only once. In some situations it is drawn twice for our workers, and thus this token is considered spoiled, and we have the error mentioned above.
   We recommend you restart the captcha-solving process by refreshing the web page, for example. In this case, the target website generates a new token, and the captcha can be solved normally.

9. Doesn't work. What do I do?

   Honored user, unfortunately, our mind-reader (aka foreseer of the future) left the country soon after Trump became president, obviously knowing a few things that we don't, which likely include what doesn't work, why it doesn't work, and how to fix it. We regular folks, on the other hand, need a few more details before we can formulate our response.
   So, please send more info, a link to the problem website, and a description of the problem. A screenshot would be nice too and will save time all round. Once sent, no need to send again.

10. Does the AntiCaptcha plugin work with the following browsers: Firefox (version 47 and older), Pale Moon, Seamonkey, and TorBrowser?

    Our plugin supports only Firefox version 48 and above and TorBrowser. We don't support older Firefox versions, neither do we support the Pale Moon or Seamonkey browsers because they are based on the old Firefox source code. More info on installation manual page for Firefox and TorBrowser.

11. Does the plugin work on the X website?

    Yes, it probably does. We always respond to our users, and that means you. Expect an email soon.
    In the meantime, you have a great opportunity to check for yourself: we give Google Chrome users 15 free CAPTCHAs. You just need to get yourself authorise in the browser using your Google account.

12. You promised me 15 free CAPTCHAs, where are they?

    Again, it works only in Google Chrome, and to get them, you need to be authorised in the browser with your Google account.

13. Error: No idle workers are available at the moment, please try a bit later or try increasing your maximum bid.

    You can increase your maximum bid on the API settingspage of your anti-captcha.com account. We recommend that you set it up to 20-$30 to avoid having this problem again.

    You can also get this error in the plugin settings window after pressing "Save". In this case, please check that your anti-captcha.com account isn't blocked or an authorisation isn't required!

    Please DO NOT WRITE TO SUPPORT about this error. There is nothing we can do about it! Your report will be ignored.

14. I don't like the quality of your service. Please refund my money ASAP!

    You have every right to request a refund. But, much as we sympathise with your situation, we are unable to help with it. Our plugin uses the anti-captcha.comcaptcha-solving service, for which you pay anti-captcha.com, not us. We have nothing to do with it. All financial questions regarding the service should, therefore, be addressed toanti-captcha.com support. Only they can help you.

15. I paid you, and my money hasn't arrived yet!

    Please see the previous question. We don't deal with financial issues. Besides contacting anti-captcha.com supportyou shoulud also check that your anti-captcha.com account has not been blocked. This might help.

16. The plugin is very slow. Can "I'm not a robot" (or regular image) CAPTCHAs be solved any faster?

    Yes, they can. We've developed a reCAPTCHA 2 precaching feature especially for this issue. You can enable it and tune it in the plugin options. In fact, it doesn't decrease the solving time itself but allows you to pre-start the solving process for a particular domain. So, when you need a solution, it may already be solved or currently in the solving process. Attention! This feature will increase spending because some so-called precached tasks that you do not use will expire afterwards. This feature is still at the experimental stage, so we're very interested in receiving your feedback about it!

17. How do you make the AntiCaptha plugin work with raiblockscommunity.net?

    They've added an awful audio captcha that is difficult to solve even for humans. Our extension doesn't support audio captchas yet. Nevertheless, we've made a few fixes to solve a recaptcha there correctly. These fixes are available from version 0.1654.

18. What is the correct placement of maximum bid, API settings, and everything?

    Forty two ;) Seriuosly, though, on the API SETTINGS page of the anti-captcha.com website.

19. Sometimes I see an "Unknown error, watch console" message.

    Try to disable extensions like AdBlock as they may block requests to our server. Also, some VPN providers may interrupt normal work, so try to disable them.

    If this doesn't help, please open a debug panel (key F12) and then a Console tab. Then copy or make a screenshot of everything you see there when this error occurs. And send it all to us on , and we'll fix it! Thank you!

20. While installing, I see a "Not from Chrome Web Store" message. The plugin doesn't install, and it's grayed out in the extension list.

    Looks like you probably tried to install our extension from a CRX file in Chrome for Windows or MacOs. But it won't work this way, which is why we created a web page describing possible ways to install the extension for Chrome.
    To make it work, just look at the plugin installation instructions from a ZIP archive.

21. Image captcha doesn't work on a website, or it used to work, but then stopped

    It could be that automatic solving stopped working for this site (it's not unusual for this to happen with on portals like FreeBitco.in). It's also possible that your target site has a specific captcha that we couldn't recognize.

    In both cases, please try to mark an image and an input filed using instructions on how to solve image captchas using the AntiCaptcha plugin.

22. I see an error message about an incorrect access key in the VKButton extension

    Unfortunately, we do not provide any support for VKButton. Please contact their technical support team.

23. The browser shows a message about disabling our extension at startup, even in dev mode.

    Try to use the extension in a different browser – Comodo Dragon, for example, or Chromium.