For myself, the issue was the malware blocker.

I was testing SSL sandbox "How to Automate EV Code Signing With SignTool.exe or Certutil.exe Using eSigner CKA (Cloud Key Adapter)" but I was getting that error:

SignTool Error: An unexpected internal error has occurred. Error information: "Error: SignerSign() failed." (-2146893821/0x80090003)

I opened a chat sending my error and they fixed it in 1 min. I asked what they did, and thew told me they disabled the malware blocker