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Fix WordPress SSL problems in layers: make sure the server has a working TLS certificate and HTTPS virtual host, set both WordPress URL fields to https://, align redirect and proxy rules, correct HTTP resource links, and clear every relevant cache before retesting. A plugin can help with configuration, but it cannot repair an unavailable certificate or a broken server-level HTTPS endpoint.
Start with the failure layer
Use the symptom to decide where to investigate first. Changing WordPress settings before HTTPS works at the host layer can make troubleshooting harder.
| Symptom | Likely layer | First action |
|---|---|---|
| HTTPS will not load, connection fails, or a certificate warning appears | Certificate, server, or hosting configuration | Ask the host to verify the certificate and HTTPS virtual host |
| WordPress or the dashboard uses inconsistent HTTP and HTTPS URLs | WordPress address settings or configuration | Check both URL fields under Settings → General |
| Images, scripts, or styles are blocked or missing | Mixed content | Find HTTP requests in browser developer tools and change their source URLs |
| The browser reports too many redirects | Server, WordPress, plugin, CDN, or reverse-proxy rules | Identify which layer issues each redirect and make the rules agree |
| A change appears to have done nothing | Browser, WordPress, host, or proxy cache | Clear applicable caches and test in a fresh private session |
When HTTPS does not load or the certificate is invalid
Verify the server before changing WordPress
WordPress is compatible with HTTPS when a TLS/SSL certificate is installed and available for the web server, as explained in the WordPress HTTPS administration guide. Open the site directly with https://. If the connection fails, the certificate is not trusted, or the HTTPS virtual host is missing, contact your hosting provider and request server-side SSL configuration. Do not treat a redirect plugin as a certificate issuer or as a repair for an unavailable HTTPS endpoint.
Check certificate coverage and renewal
Confirm that the certificate covers the exact hostname visitors use (for example, the chosen www or non-www address), is not expired, and is being renewed by the host or ACME client. Let’s Encrypt announced a staged change from 90-day certificates to 64-day and then 45-day certificates over the two years following its February 24, 2026 announcement; ACME clients that support ARI are intended to handle the change automatically. See the Let’s Encrypt announcement for the schedule.
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Set both WordPress site addresses to HTTPS
Use the General Settings screen
- Sign in to WordPress and open Settings → General.
- Change WordPress Address (URL) to the intended
https://address. This is where the core files live. - Change Site Address (URL) to the public
https://address visitors should use. - Save, sign in again if prompted, and test the front end and dashboard.
Both fields should use the same intended hostname and path for a normal single-site installation. WordPress documents this migration in its Migrating WordPress guide.
Recover if a URL change locks you out
Add temporary values to wp-config.php before the line that says “That’s all, stop editing!”:
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define( 'WP_HOME', 'https://example.com' );
define( 'WP_SITEURL', 'https://example.com' );Replace the hostname and path with your real site. These constants override the General Settings fields and cannot be edited there while present, so remove them after correcting the database values. Multisite networks require network-specific migration procedures; do not apply single-site instructions blindly.
Force secure administration only after HTTPS works
Once the server serves valid HTTPS, WordPress supports FORCE_SSL_ADMIN in wp-config.php to require HTTPS for dashboard and login traffic. This constant cannot fix a broken certificate or an HTTPS endpoint that the server does not provide.
Remove mixed-content warnings
Find the insecure request
Mixed content occurs when an HTTPS page requests a sub-resource over HTTP. Open the browser’s developer tools, reload the page, and inspect the Console or Network panel for HTTP images, scripts, stylesheets, fonts, embeds, or API calls.
Correct the underlying URL
- Update the offending image, media, script, stylesheet, theme setting, widget, or plugin reference from
http://tohttps://when that source supports HTTPS. - For content stored in WordPress, update old links in the relevant post, page, custom-field, or media setting. Back up before making database-wide replacements.
- If a third-party source has no HTTPS endpoint, replace it with a secure provider or remove it; do not simply hide the warning.
- Clear caches and reload the page, then verify that no HTTP requests remain.
Let’s Encrypt defines mixed content and the required remedy in its Glossary: developers must change resource URLs so all resources use HTTPS. The Really Simple Security plugin listing notes that CSS and JavaScript references commonly cause these errors and describes a dynamic fixer, but correcting the saved reference is more reliable than assuming a plugin will solve every case.
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Fix redirect loops and repeated redirects
Map the redirect chain
A loop usually means two layers disagree. Check, in order, the web-server rewrite rules, WordPress URL values, security or redirect plugins, CDN settings, and reverse-proxy behavior. Disable or change one enforcement layer at a time, then test the complete chain from HTTP and HTTPS versions of the hostname.
Account for reverse proxies
In a common proxy arrangement, the browser connects to HTTPS at the CDN or load balancer while the proxy connects to the origin over HTTP. If WordPress is not told that the original request was HTTPS, it may redirect back to HTTPS indefinitely. Configure the proxy to pass the original scheme and configure the origin application to recognize that forwarded protocol, following your proxy’s documented method. Do not enable several independent “force HTTPS” mechanisms without checking their interaction.
Use host support when the origin is wrong
If the origin server’s HTTPS virtual host, forwarded headers, or rewrite rules are incorrect, ask the host to correct them before re-enabling WordPress or plugin redirects. WordPress support discussions and the redirect-loop troubleshooting guidance describe proxy and conflicting-rule causes.
Clear caches before judging a fix
- Open the site in a private window or a different browser.
- Clear the normal browser cache if the old redirect or warning persists.
- Purge WordPress page, optimization, or security-plugin caches.
- Purge host-level cache and any CDN, reverse-proxy, or load-balancer cache.
- Retest the exact URL and inspect the current response and console messages.
WordPress lists these cache layers as a reason changes can appear ineffective in its “I make changes and nothing happens” FAQ.
When to involve your hosting provider
- HTTPS fails before WordPress loads or the certificate is invalid, expired, or missing a hostname.
- The server lacks an HTTPS virtual host or has incorrect TLS configuration.
- A CDN or reverse proxy terminates TLS but the origin receives the wrong forwarded protocol.
- You cannot access the host panel to provision or renew the certificate.
Ask whether the host provisions certificates, renews them automatically, supports your CDN or proxy design, and provides WordPress-aware assistance. Contact your current provider first; no physical product is needed to solve these SSL failures.
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