OnlyTheOnline
Log in
Get Help Now
dnsServer•apiREST APIerrorerrorlocksslcodecURLapiapi•labelCommon•warningModerate

REST API request failed: SSL certificate problem

The REST API request fails because the server is unable to verify the SSL certificate presented by the remote host. The PHP cURL library checks the certificate chain against a list of trusted root authorities. If the CA bundle is missing, outdated, or the remote certificate is self‑signed, the verification stops and returns error 60.

The failure also occurs when the server forces an old TLS version, when a proxy replaces the certificate, or when the site’s own certificate is invalid. In all cases the HTTP API aborts the request and WordPress reports an SSL certificate problem.

Symptoms

[dashicons-warning]
Admin dashboard warning
Site Health shows a critical issue that the REST API is not available
[dashicons-admin-plugins]
Plugin errors
Jetpack, Gutenberg blocks and automatic updates stop working
[dashicons-media-code]
Console error
XMLHttpRequest fails with SSL certificate problem
[dashicons-update]
Update failures
WordPress cannot fetch updates from wordpress.org

Common Causes

Missing CA bundle
The operating system or PHP does not have an up‑to‑date list of trusted root certificates
Outdated TLS version
Server forces TLS 1.0 or 1.1 while the remote endpoint requires TLS 1.2 or higher
Proxy or firewall interception
A network device replaces the original certificate with its own, which is not trusted
Self‑signed site certificate
Apache or Nginx uses a self‑signed or expired certificate for the site, causing internal requests to fail
Need this fixed right now?

Don't waste your day debugging. Our experts can Fix your issues in under 2 hours.*

Get this issue fixed

Success Rate

100% Guaranteed

Starting from

$35 /hour
99+

Trusted by Business Owners

“I spent 3 days trying to fix the Elementor loading loop. These guys fixed it in 20 minutes. Lifesavers!”

— Sarah J., Web Designer

Related Issues

contact_mail
Contact Form 7: REST API request failed: 503 Service Unavailable
A 503 Service Unavailable response stops Contact Form 7 from sending data...
apiREST APIerror503descriptioncontact-form-7
contact_mail
Contact Form 7: REST API request failed: 429 Too Many Requests

The form tries to send data through the WordPress REST API. The...

apiREST APIerrorerrorsecurityfirewalldescriptioncontact-form-7settingsserver_configuration
contact_mail
Contact Form 7: REST API request failed: 401 Unauthorized

The form tries to send data via the WordPress REST API. The...

apiREST APIadmin_panel_settingspermissionsdescriptioncontact-form-7lock401
contact_mail
Contact Form 7: File upload error: temporary directory missing

The error appears when Contact Form 7 cannot locate a writable temporary...

codePHPcloud_offupload erroradmin_panel_settingspermissionsdescriptiontemporary filedescriptioncontact-form-7
contact_mail
Contact Form 7: Mail (2) sending failed: PHP mail() function disabled

Contact Form 7 reports a failure for Mail (2) when the PHP...

codePHPerrorerrordescriptioncontact-form-7mailMailsettingsserver_configuration
contact_mail
Contact Form 7: Mail (2) sending failed: SSL certificate verification failed

Contact Form 7 reports a failure when trying to send the secondary...

errorerrorlocksslcodecURLdescriptioncontact-form-7