ERR_CERT_WEAK_SIGNATURE_ALGORITHM KB ID 0001845
Problem
Error seen when attempting to open a web page that’s been secured by https with a certificate.
Your Connection isn’t private
Attackers might be trying to steal your information from {host-name} (for example, passwords , messages or credit cards)
Solution : ERR_CERT_WEAK_SIGNATURE_ALGORITHM
I had not seen this error for a while, and I was surprised I was seeing it now. It’s because the certificate that’s been used on the website is using SHA1 as its signature algorithm.
If you have purchased this certificate you will need to get it reissued, but chances are this is a self-issued certificate form Certificate Services. If that is the case, you need to update your certificate services form SHA1 to SHA256.
For Complex (Multi-tier PKI Certificate Services)
Upgrade Your Microsoft PKI Environment to SHA2 (SHA256)
For most people (with a Stand-alone Enterprise Certificate Services CA Server
Certificate Services – Migrate from SHA1 to SHA2 (SHA256)
