Common Issues With SSL Cancellation Checks

SSL certificates are, on the aggregate, incredible inventions that assist to protect your site by encrypting information between you and your users. They maintain website visitors pleased, they retain web browsers happily, and they attain your site SEO degrees with search engines.

Unfortunately, that doesn’t mean amassing an SSL on your website is invariably sunshine and roses. Like all technological stuff, there is an odds that something might go wrong. Today we’ll point to some common problems with SSL revocation reviews and what you can do to deter them.

Why would I cancel my SSL?

SSL cancellation is a procedure that nullifies your SSL certificate before its expiration date to discern it from useful SSLs. SSL revocation cancels the certificate, eliminates HTTPS from your site, and warns Certificate Authorities (CAs) — the people in charge of allocating and managing SSLs — that your SSL certificate is no longer in practice.

It might sound outrageous, but there are numerous explanations why an SSL may require to be revoked:

  • Your SSL certificate’s hidden key was forfeited or stolen
  • You completely don’t want to employ your SSL anymore
  • You expected to get your SSL reissued, so you require to invalidate the old one
  • A domain is presumed of malicious activities (like phishing or malware)
  • Your SSL was mistakenly issued
  • You infringed your SSL certificate terms of service

How SSL cancellation checks work

When an SSL has been cancelled, the CA is required to notify browsers that the SSL is no longer valid. It does this by putting in the SSL certificate’s identifier serial number to certificate cancellation lists (CRLS) and online certificate status protocol (OCSP) servers. Much like the name indicates, a CRL is a record of invalid SSL certificates that browsers can survey before loading a website. CRLs are usually revamped by the CA every 24 hours and browsers also download the updated lists occasionally.OCSP is a code that browsers can utilize to test an SSL certificate’s status. Before loading a website, a browser will reach a server known as an OCSP responder to verify the cancellation status of that site’s SSL on the CA’s cancellation server. The responder should answer with the SSL certificate’s cancellation status and the CA’s personal signing key.

Misconceptions and vulnerabilities

Two of the substantial concerns with cancellation checks are protection and privacy. For browsers that utilize the conventional OCSP technique, there is some possibility for stuff to go wrong. If there’s an application issue or network lag during a review, a browser will conduct OCSP in soft-fail mode.

How to prevent cancellation check errors

To enhance security and speed, website proprietors should execute OCSP fixing on their servers. Not only will this assure revocation checks will help as they should, but it should also deter any possible SSL errors.


SSL cancellation may not be the main concern for either website proprietors or visitors, but it should at least be on your radar. By seizing just a few minutes to revamp your server or browser settings, you should be prepared to deter errors and potentially speed up website loading times while retaining secure web communications.

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