Press Windows + R , type certmgr.msc , and hit Enter.
He clicked on Personal → Certificates . There they were: his shiny new certificate (valid until 2026) and the old, expired one with a red X icon. como excluir um certificado digital do pc
From that day on, he kept a small note on his desk: “certmgr.msc – check every 6 months.” And his digital life stayed clean, one expired key at a time. Press Windows + R , type certmgr
He right-clicked the old one. A menu appeared. He saw → Export… (not what he wanted). Then he looked again: Delete . Press Windows + R