After having this SSL error, I have search and know that it start from 30/09/2021, cause from let's encrypt.
I tried updating my windows, updating chrome, manually downloaded and added some certificate file CER.pfx, CERTI.pfx, CERTIFI.pfx, FINISH.cer, FIXE FINISH Update 2021.10.02.cer and could go to some site like store.steampowered.com... but I just cannot go to stackoverflow (see image below).
How could I fix this problem?
