Purchasing Code Signing Service: Can a code signing certificate use both a token and cloud signing? Which brands of code signing certificates are supported?

No. After purchasing a remote code signing service subscription, the certificate's CSR and key are both generated and stored in a cryptographic machine, and the private key cannot be exported. Therefore, the same certificate cannot be stored and used via a UKey again. Currently, the code signing certificates sold on the platform support the following brands: Sectigo, DigiCert, GlobalSign.