Mengatasi GPG error, signatures could't be verified saat apt update ubuntu

Semisal Anda menjumpai error seperti di bawah ini saat apt update:

The following signatures couldn't be verified because the public key is not available: NO_PUBKEY EB3E94ADBE1229CF
Reading package lists... Done                                                   
W: GPG error: https://packages.microsoft.com/ubuntu/20.04/prod focal InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY EB3E94ADBE1229CF

Untuk mengatasinya, maka jalankan command berikut ini:

sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys EB3E94ADBE1229CF

Ganti EB3E94ADBE1229CF dengan public key yang bermasalah.