Let’s Encrypt certificates expire every 90 days and are meant to renew automatically, and when that automatic renewal fails silently, you often don’t find out until visitors start seeing a security warning — the fix depends on diagnosing why the renewal process itself stopped working on your specific hosting setup.
Check your certificate’s actual expiry date first
Most browsers let you view a site’s certificate details by clicking the padlock icon. Confirming the actual expiry date tells us how urgent this is and whether the certificate has already expired or is still valid but renewal has stopped working correctly in the background.
Let's Encrypt auto-renewal failure fix
Let's Encrypt auto-renewal failed silently — traced to the actual cause before it expires again.
- Full backup taken before we start
- If we can’t fix it, you get your money back
- We never ask for your own password
This or something else?
| Your Let’s Encrypt certificate’s automatic renewal has failed, or you’re seeing an expiry warning | This fix covers it |
| You want a certificate installed for the first time, not an existing renewal fixed | SSL certificate install & renewal via control panel |
| The issue is broader HTTPS configuration, not specifically Let’s Encrypt renewal | HTTPS / SSL certificate configuration errors, in the Configuration & Environment category |
| Your host doesn’t support Let’s Encrypt at all | Worth confirming your specific hosting setup — the approach and available options differ |
What you are seeing
- A browser security warning about an expired or invalid certificate
- The certificate’s actual expiry date approaching or already passed
- Automatic renewal logs (where accessible) showing failed attempts
- The issue possibly following a recent hosting or DNS change
Common causes
- A DNS or domain validation check failing during the automated renewal process
- The renewal process being blocked by a firewall or security rule that didn’t exist when it last succeeded
- A hosting account resource limit interrupting the renewal script before it completes
- A recent domain or DNS change invalidating the previous validation method the renewal process relies on
- Repeated prior failed attempts triggering the certificate authority’s own rate limit, blocking further renewal tries for a period
What we do
- Confirm the certificate’s actual current status and expiry
- Check available renewal logs or control panel diagnostics for the specific failure reason
- Correct the identified cause where it’s within the control panel’s available settings
- Trigger a manual renewal to confirm the fix worked
- Verify auto-renewal is genuinely restored for future cycles, not just this one instance
- Document what caused the failure and what was changed
What is included
- The cause of the renewal failure identified and corrected, where within our control
- A successful manual renewal confirming the fix
- Verified restored automatic renewal for future cycles
- A written note on the cause and resolution
Not included
- Resolving a renewal failure caused by a limitation the hosting control panel doesn’t allow us to change — we’d document it and help you raise it with your host directly
- Purchasing or switching to a different certificate type, a separate decision
- Broader DNS or domain configuration issues beyond what’s blocking renewal specifically
- Ongoing monitoring for future renewal failures, unless separately arranged
Questions about this fix
Why would auto-renewal just stop working without any change on my part?
A change elsewhere — a DNS update, a new firewall rule, a hosting resource limit being reached — can silently break the automated renewal process even when nothing about the certificate configuration itself was touched directly.
How urgent is this?
Genuinely urgent if the certificate has already expired, since that produces an immediate, visible security warning for every visitor — if it hasn't expired yet but renewal has failed once, there's a bit more time, though it's worth fixing before the next renewal attempt is also due to fail.
What if my host's control panel simply doesn't give me access to see why renewal failed?
That's a real limitation on some hosts — we'd work with whatever diagnostic information is actually accessible, and if the host genuinely doesn't expose enough to diagnose remotely, that's worth raising directly with their support team.
Will this happen again after it's fixed?
Not for the same identified cause, though a different, future change to your DNS or hosting configuration could theoretically trigger a similar failure again — this is an inherent characteristic of an automated process depending on several moving pieces staying compatible.
Could this be a sign of a bigger problem with my hosting?
Not necessarily — a single renewal failure is often an isolated technical hiccup rather than a sign of a broader issue, though if it's happened repeatedly, that pattern would be worth investigating further.
Related fixes
If this is the second time this year
A bad update breaking the site is a symptom of updates not being tested first. Care plans run every update on a staging clone before it reaches your live site, which is the actual fix for this happening again.
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Create a separate admin account for us and delete it when we are done. For anything else, we get in touch and agree a method — never a form field on this site, never by reply to an email.
We back up first, always
Before anything is touched we take a full backup and keep it for 30 days. If a fix goes wrong, we put the site back exactly as it was.
If it is not what you bought
If the problem turns out smaller than what you ordered, we refund the difference. If it is bigger, we stop and send a quote before doing any extra work.
If we cannot fix it
You get back what we received. Diagnosis is on us — you only pay when the problem is actually solved. The payment processor takes its fee before the money reaches us, so we never hold it and it is not ours to return. That is true here as everywhere else.
If it comes back
Reply within seven days of delivery and we put it back on the bench at no cost. The fix is not finished until it holds.
What we are responsible for
If something goes wrong with a fix, our responsibility is limited to what you paid for it. We take a full backup first so mistakes can be undone, and we tell you before doing anything outside what you bought.