Title: Error: [] cURL error 7: Last modified: October 27, 2019 --- # Error: [] cURL error 7: * [skipwoof](https://wordpress.org/support/users/skipwoof/) * (@skipwoof) * [6 years, 7 months ago](https://wordpress.org/support/topic/error-curl-error-7-3/) * Hello * I installed WP in a VM at home to perform some tests. Everything was working well, I can access to website from internet, etc… But when I go to “Tools > Site Health”, I have 3 Critical issues. All of them related to a “cURL error 7”, but without any details related to which error. * > **The REST API encountered an error** > The REST API is one way WordPress, and > other applications, communicate with the server. One example is the block editor > screen, which relies on this to display, and save, your posts and pages. > The REST API request failed due to an error. > Error: [] cURL error 7: * > **Could not reach WordPress.org** > Communicating with the WordPress servers > is used to check for new versions, and to both install and update WordPress > core, themes or plugins. > Error Your site is unable to reach WordPress.org at 198.143.164.251, and returned > the error: cURL error 7: * > **Your site could not complete a loopback request** > Loopback requests are > used to run scheduled events, and are also used by the built-in editors for > themes and plugins to verify code stability. > The loopback request to your site failed, this means features relying on them > are not currently working as expected. > Error: [] cURL error 7: * When I connect to Unix hosting WP, I’m able to perform a cURL to WordPress, and reach internet. I can’t find what is going on and how to fix it, since there is no error details, neither in WP logs. * Any tips ? Viewing 15 replies - 1 through 15 (of 24 total) 1 [2](https://wordpress.org/support/topic/error-curl-error-7-3/page/2/?output_format=md) [→](https://wordpress.org/support/topic/error-curl-error-7-3/page/2/?output_format=md) * Thread Starter [skipwoof](https://wordpress.org/support/users/skipwoof/) * (@skipwoof) * [6 years, 7 months ago](https://wordpress.org/support/topic/error-curl-error-7-3/#post-12069331) * ``` ### wp-core ### version: 5.2.3 site_language: en_US user_language: en_US permalink: /%postname%/ https_status: true user_registration: 0 default_comment_status: open multisite: false user_count: 1 dotorg_communication: cURL error 7: ### wp-paths-sizes ### wordpress_path: /var/www/html/wordpress wordpress_size: 37.36 MB (39176082 bytes) uploads_path: /var/www/html/wordpress/wp-content/uploads uploads_size: 1.95 MB (2049885 bytes) themes_path: /var/www/html/wordpress/wp-content/themes themes_size: 3.06 MB (3208811 bytes) plugins_path: /var/www/html/wordpress/wp-content/plugins plugins_size: 1.90 MB (1992673 bytes) database_size: 656.00 KB (671744 bytes) total_size: 44.92 MB (47099195 bytes) ### wp-active-theme ### name: Twenty Nineteen version: 1.4 author: the WordPress team author_website: https://wordpress.org/ parent_theme: none theme_features: automatic-feed-links, title-tag, post-thumbnails, menus, html5, custom-logo, customize-selective-refresh-widgets, wp-block-styles, align-wide, editor-styles, editor-style, editor-font-sizes, editor-color-palette, responsive-embeds, widgets theme_path: /var/www/html/wordpress/wp-content/themes/twentynineteen ### wp-themes (2) ### Twenty Seventeen: version: 2.2, author: the WordPress team Twenty Sixteen: version: 2.0, author: the WordPress team ### wp-plugins-active (3) ### cURL no IPv6: version: 1.0, author: GOLDERWEB – Jonathan Golder Site Offline: version: 1.3.8, author: Chandra Shekhar Sahu SSL Insecure Content Fixer: version: 2.7.2, author: WebAware ### wp-plugins-inactive (2) ### Akismet Anti-Spam: version: 4.1.2, author: Automattic Hello Dolly: version: 1.7.2, author: Matt Mullenweg ### wp-media ### image_editor: WP_Image_Editor_GD imagick_module_version: Not available imagemagick_version: Not available gd_version: 2.2.5 ghostscript_version: not available ### wp-server ### server_architecture: Linux 4.18.0-80.11.2.el8_0.x86_64 x86_64 httpd_software: Apache/2.4.37 (centos) OpenSSL/1.1.1 mod_fcgid/2.3.9 php_version: 7.4.0RC4 64bit php_sapi: fpm-fcgi max_input_variables: 1000 time_limit: 30 memory_limit: 256M max_input_time: 60 upload_max_size: 2M php_post_max_size: 8M curl_version: 7.61.1 OpenSSL/1.1.1 suhosin: false imagick_availability: false htaccess_extra_rules: true ### wp-database ### extension: mysqli server_version: 5.5.5-10.3.11-MariaDB client_version: mysqlnd 7.4.0RC4 ### wp-constants ### WP_HOME: undefined WP_SITEURL: undefined WP_CONTENT_DIR: /var/www/html/wordpress/wp-content WP_PLUGIN_DIR: /var/www/html/wordpress/wp-content/plugins WP_MAX_MEMORY_LIMIT: 256M WP_DEBUG: false WP_DEBUG_DISPLAY: true WP_DEBUG_LOG: false SCRIPT_DEBUG: false WP_CACHE: false CONCATENATE_SCRIPTS: undefined COMPRESS_SCRIPTS: undefined COMPRESS_CSS: undefined WP_LOCAL_DEV: undefined ### wp-filesystem ### wordpress: writable wp-content: writable uploads: writable plugins: writable themes: writable ``` * [Dion](https://wordpress.org/support/users/diondesigns/) * (@diondesigns) * [6 years, 7 months ago](https://wordpress.org/support/topic/error-curl-error-7-3/#post-12070042) * Makr sure your system/firewall is configured to allow your localhost setup to send/receive on ports 80 and 443. * Thread Starter [skipwoof](https://wordpress.org/support/users/skipwoof/) * (@skipwoof) * [6 years, 7 months ago](https://wordpress.org/support/topic/error-curl-error-7-3/#post-12070061) * It’s already the case. Otherwise how could I reach the website on both port 80 and 443 ? As I said in my first post “When I connect to Unix hosting WP, I’m able to perform a cURL to WordPress, and reach internet.” + “I can access to website from internet,” 😉 And my _firewalld _is disabled/stopped on system side. So the issue is not here… Any tips to find what’s going on ? - This reply was modified 6 years, 7 months ago by [skipwoof](https://wordpress.org/support/users/skipwoof/). - This reply was modified 6 years, 7 months ago by [skipwoof](https://wordpress.org/support/users/skipwoof/). * [Dion](https://wordpress.org/support/users/diondesigns/) * (@diondesigns) * [6 years, 7 months ago](https://wordpress.org/support/topic/error-curl-error-7-3/#post-12070153) * You said the problem is on a VM at home, not on the unix hosting. Check the firewall on your VM at home. * Curl error 7 means Curl was blocked from accessing the requested site. Since wordpress.org has no blocks (that I’m aware of, anyway), that error is almost always caused by firewall issues on the local system making the request. * Thread Starter [skipwoof](https://wordpress.org/support/users/skipwoof/) * (@skipwoof) * [6 years, 7 months ago](https://wordpress.org/support/topic/error-curl-error-7-3/#post-12070538) * Local Firewall is disabled, nothing else can block flows. I’ve a firewall in my home network, and even with an ANY ANY ACCEPT rule, issue still persist. And I see no drops in logs. I don’t think issue is on Firewall side. The question is : why do we only have error message “Error: [] cURL error 7:” whith nothing else ?? Usually it says what’s wrong.. it’s more detailed… * Thread Starter [skipwoof](https://wordpress.org/support/users/skipwoof/) * (@skipwoof) * [6 years, 7 months ago](https://wordpress.org/support/topic/error-curl-error-7-3/#post-12077825) * Nobody can help ? No tips ? I ran a TCPDUMP to check if something were wrong, but found nothing strange :/ * [James Hunt](https://wordpress.org/support/users/bonkerz/) * (@bonkerz) * [6 years, 4 months ago](https://wordpress.org/support/topic/error-curl-error-7-3/#post-12339157) * I have the same error message in health check – did you get any resolution to your issue? I’m running WordPress locally via Lando/Docker * Thread Starter [skipwoof](https://wordpress.org/support/users/skipwoof/) * (@skipwoof) * [6 years, 4 months ago](https://wordpress.org/support/topic/error-curl-error-7-3/#post-12339536) * No. Couldn’t find anything on the web, and no clue on log files. So maybe a WordPress bug, or an issue on FileSystem. I ended by a full clean install in a whole New VM. * [Tetralab](https://wordpress.org/support/users/gigamegs/) * (@gigamegs) * [6 years, 4 months ago](https://wordpress.org/support/topic/error-curl-error-7-3/#post-12374079) * Can you ssh into your server and perform a curl -v [https://localhost](https://localhost)? * [igienger](https://wordpress.org/support/users/igienger/) * (@igienger) * [6 years, 2 months ago](https://wordpress.org/support/topic/error-curl-error-7-3/#post-12637512) * If you are using SELinux (Security-Enhanced Linux), it has a default setting that blocks HTTP servers from making network connections. For example I’m using CentOS 8 and couldn’t figure out why my server couldn’t connect but whenever I logged in I was able to. * This will allow connections to be made: * `sudo setsebool -P httpd_can_network_connect true` * After this you may need to restart your service. * This might be your issue if you’re able to “curl” and “ping” without problem as a user, but your webserver (Apache, Nginx, etc) isn’t able to. - This reply was modified 6 years, 2 months ago by [igienger](https://wordpress.org/support/users/igienger/). Reason: Code formatting * [James Hunt](https://wordpress.org/support/users/bonkerz/) * (@bonkerz) * [6 years, 2 months ago](https://wordpress.org/support/topic/error-curl-error-7-3/#post-12642862) * Thanks [@igienger](https://wordpress.org/support/users/igienger/) it made me revisit this issue again. * I don’t know whether the Site Health feature has now been improved in WP 5.4, but the error message I now see is: * ``` The REST API request failed due to an error. Error: cURL error 7: Failed to connect to mywebsite.lndo.site port 443: Connection refused (http_request_failed) ``` * And for the original question: * > Can you ssh into your server and perform a curl -v [https://localhost](https://localhost)? * ``` ❯ curl -v https://localhost * Trying ::1... * TCP_NODELAY set * Connected to localhost (::1) port 443 (#0) * ALPN, offering h2 * ALPN, offering http/1.1 * successfully set certificate verify locations: * CAfile: /etc/ssl/cert.pem CApath: none * TLSv1.2 (OUT), TLS handshake, Client hello (1): * TLSv1.2 (IN), TLS handshake, Server hello (2): * TLSv1.2 (IN), TLS handshake, Certificate (11): * TLSv1.2 (OUT), TLS alert, unknown CA (560): * SSL certificate problem: unable to get local issuer certificate * Closing connection 0 curl: (60) SSL certificate problem: unable to get local issuer certificate More details here: https://curl.haxx.se/docs/sslcerts.html curl failed to verify the legitimacy of the server and therefore could not establish a secure connection to it. To learn more about this situation and how to fix it, please visit the web page mentioned above. ``` * So as the SSL cert is not working properly on my local setup then that is why health check is failing. * I tried your command: * > sudo setsebool -P httpd_can_network_connect true * but the command was not found. Running it in the Lando instance was accepted: * > lando setsebool -P httpd_can_network_connect true * But it didn’t have any affect. - This reply was modified 6 years, 2 months ago by [James Hunt](https://wordpress.org/support/users/bonkerz/). Reason: obfuscation of URL * [benhadad](https://wordpress.org/support/users/benhadad/) * (@benhadad) * [5 years, 9 months ago](https://wordpress.org/support/topic/error-curl-error-7-3/#post-13308164) * Any solution to this? [@bonkerz](https://wordpress.org/support/users/bonkerz/) you have been using lando and I haven’t seen you posting any more issue, did you solve this arleady. * I am using the news lando with Docker 2.3.0.3 on windows and every setup ngnix and apache, php 7.3 & 7.4 all work fine but have this issue. * For me it’s a show stopper since it stops plugins from working. * [James Hunt](https://wordpress.org/support/users/bonkerz/) * (@bonkerz) * [5 years, 9 months ago](https://wordpress.org/support/topic/error-curl-error-7-3/#post-13316811) * [@benhadad](https://wordpress.org/support/users/benhadad/) I’m not sure what happened but its not showing as an error anymore. I’d recommend getting latest WP, latest Lando, running a lando rebuild. Even with the error, this error never stopped me from installing plugins like you are experiencing, so that sounds like a different issue to me. * [spacecadet404](https://wordpress.org/support/users/spacecadet404/) * (@spacecadet404) * [5 years, 6 months ago](https://wordpress.org/support/topic/error-curl-error-7-3/#post-13670875) * > If you are using SELinux (Security-Enhanced Linux), it has a default setting > that blocks HTTP servers from making network connections. For example I’m using > CentOS 8 and couldn’t figure out why my server couldn’t connect but whenever > I logged in I was able to. > This will allow connections to be made: > sudo setsebool -P httpd_can_network_connect true > After this you may need to restart your service. > This might be your issue if you’re able to “curl” and “ping” without problem > as a user, but your webserver (Apache, Nginx, etc) isn’t able to. * This solved my issue. Much more to learn about CentOS. Thanks [@igienger](https://wordpress.org/support/users/igienger/)! - This reply was modified 5 years, 6 months ago by [spacecadet404](https://wordpress.org/support/users/spacecadet404/). Reason: Forgot to credit solution * [Ben](https://wordpress.org/support/users/benrich/) * (@benrich) * [5 years, 4 months ago](https://wordpress.org/support/topic/error-curl-error-7-3/#post-13950957) * I have a similar issue. I don’t know if you lot have a similar cause. * I’m pretty sure for me it’s because my WP install is on a docker container that sits behind a reverse proxy. The curl requests are to the website domain and that domain resolves to localhost. The localhost container doesn’t deal with HTTPS as that’s the job of the reserve proxy. * I haven’t found a solution yet :/ Viewing 15 replies - 1 through 15 (of 24 total) 1 [2](https://wordpress.org/support/topic/error-curl-error-7-3/page/2/?output_format=md) [→](https://wordpress.org/support/topic/error-curl-error-7-3/page/2/?output_format=md) The topic ‘Error: [] cURL error 7:’ is closed to new replies. * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) * 24 replies * 16 participants * Last reply from: [martinpang](https://wordpress.org/support/users/martinpang/) * Last activity: [4 years, 4 months ago](https://wordpress.org/support/topic/error-curl-error-7-3/page/2/#post-15296955) * Status: not resolved ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics