No, when HPKP breaks your site no longer works, period. The error page doesn't allow clicking through. Some browsers (e.g., Chrome) support manual editing of th

No, when HPKP breaks your site no longer works, period. The error page doesn't allow clicking through. Some browsers (e.g., Chrome) support manual editing of the HPKP configuration so some users might be able to get around the problem, but that's unlikely to work for many. Try it here: https://pinning-test.badssl.com https://pinning-test.badssl.com