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Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteTo add SSL to WordPress, first enable a valid SSL/TLS certificate for your domain through your hosting provider or WordPress.com. Only after the HTTPS address loads without a certificate warning should you change WordPress’s site URLs, fix any mixed-content resources, and configure HTTP-to-HTTPS redirects. A WordPress setting or plugin cannot install a certificate on the web server.
Before you start: identify your WordPress setup
The steps depend on where the site is hosted. A self-hosted WordPress site gets its certificate and server controls from its hosting provider; WordPress.com has its own domain-security workflow. Also confirm the exact hostname visitors use, such as example.com or www.example.com, because the certificate and DNS setup must cover the hostname you intend to serve.
- Self-hosted WordPress: check your host’s instructions or contact support to ask how it provisions certificates, enables HTTPS, manages redirects, and renews certificates.
- WordPress.com: open the Hosting Dashboard and check the domain’s security status. Follow WordPress.com’s SSL and DNS guidance at Secure Your WordPress Site Domain with SSL.
WordPress’s HTTPS handbook explains that WordPress supports HTTPS when an SSL/TLS certificate is installed and available to the web server. If you are unsure who controls the server or DNS, ask the host before changing WordPress settings.
Enable HTTPS at your host or platform
For a self-hosted site, use the hosting control panel or ask the provider to provision and install a certificate for the correct domain. Certificate controls vary by host and server setup, so use that provider’s instructions rather than applying a generic server configuration.
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One certificate-management route is ACME automation. Let’s Encrypt describes how an ACME client proves control of a domain—for example, through a DNS record or an HTTP resource—before requesting a certificate. The client also manages certificate issuance and renewal. See How It Works. Whether you or your host manages an ACME client depends on the hosting arrangement.
On WordPress.com, check the domain’s status in the Hosting Dashboard and follow the platform’s setup guidance. Its certificate provisioning may be affected by DNS configuration, including CAA records, nameserver mismatches, or DNSSEC issues; consult WordPress.com support if status does not resolve.
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Verify HTTPS before changing WordPress URLs
Once the host says the certificate is active, open the site using its HTTPS address. Confirm that the browser does not report a certificate error and that the certificate covers the hostname you opened. If HTTPS fails or shows a certificate warning, stop here and ask the host to check certificate status, hostname coverage, DNS, and server configuration.
Then check the WordPress dashboard at Tools > Site Health. WordPress 5.7 introduced HTTPS environment detection and a Site Health action that can switch both site URLs when WordPress detects HTTPS support. The feature is described in the WordPress 5.7 HTTPS migration announcement and the Site Health screen documentation.
Change both WordPress URLs to HTTPS
When HTTPS works, update both the WordPress Address and Site Address so they use https://. If Site Health offers the HTTPS switch, use it to update both together. WordPress’s HTTPS detection considers both addresses.
- Sign in to WordPress and open Tools > Site Health.
- If WordPress reports that HTTPS is supported and offers the switch, follow that action to update the site URLs.
- Check that the WordPress Address and Site Address use the intended HTTPS hostname.
- Visit the front end and sign in to the dashboard again to confirm the site and admin remain accessible.
If the switch is unavailable, the environment may not pass WordPress’s HTTPS check. Resolve the certificate, server, or proxy issue before trying again. Also check whether WP_HOME or WP_SITEURL is defined in wp-config.php; those constants can determine the URLs instead of editable dashboard settings. If server-side configuration needs changing, ask the hosting provider.
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Find and fix mixed content
A page can load over HTTPS while still requesting images, scripts, stylesheets, or other resources over HTTP. These insecure requests are called mixed content and can cause a browser warning or prevent the expected secure indicator from appearing.
- Check the home page, important landing pages, forms, and the WordPress admin.
- For an affected page, use the browser’s developer tools or console to identify the specific resources still requested with
http://. - Correct the source of each insecure URL, which may be saved content, a theme, a plugin, or an external resource. Check the affected pages again after making changes.
Do not assume that installing a certificate automatically updates every old URL saved in site content or added by themes and plugins. WordPress.com also identifies mixed content as a possible reason a site may not appear fully secure in its SSL guidance.
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After the HTTPS version works and WordPress uses HTTPS URLs, configure the host, server, proxy, or platform to redirect visitors from HTTP to HTTPS. The correct control depends on the actual hosting stack, so use the host’s documented setting rather than copying a universal .htaccess rule. Check that the intended hostname resolves consistently and that the redirect leads to the chosen HTTPS hostname.
Confirm who is responsible for renewal. A host-managed certificate may be renewed by the provider; an ACME-managed certificate depends on its client and validation continuing to work. Let’s Encrypt’s documentation describes domain validation and certificate management as part of issuance and renewal.
Special case: a CDN or reverse proxy
If SSL terminates at a CDN or reverse proxy while the application server receives traffic without SSL, WordPress may not recognize that the original visitor used HTTPS. WordPress warns that forcing HTTPS for the admin can then create an infinite redirect loop unless WordPress correctly recognizes the forwarded protocol and the proxy is configured to send it.
If the dashboard loops or becomes inaccessible after enabling HTTPS, ask the host or proxy administrator to verify that the HTTPS scheme is forwarded and interpreted correctly. Avoid adding proxy-specific code without knowing how that server is configured; the WordPress HTTPS handbook covers this proxy caveat.
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Common problems and what to check
- HTTPS will not load or the browser reports a certificate error: ask the host to check the certificate, hostname coverage, DNS, and server setup. For WordPress.com, review the platform’s domain and DNS guidance.
- Site Health has no HTTPS switch: check whether HTTPS passes the environment test and whether
WP_HOMEorWP_SITEURLis set in configuration. Resolve server or proxy issues first. - Only some pages show a warning or lack the secure indicator: inspect those pages for resources still loading over HTTP; mixed-content issues can vary by page.
- The admin redirects repeatedly behind a CDN or proxy: have the administrator check forwarded HTTPS protocol handling.
- A server change is required: contact the host, since server configuration may not be changeable from WordPress. See the Site Health documentation.
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