解决sudo apt-get update报错问题 he following signatures couldn't be verified because the public key is not available: NO_PUBKEY EB3E94ADBE1229CF 输入sudo apt update出现如下报错W: GPG error: https://packages.microsoft.com/repos/edge stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY EB3E94ADBE1229CF E: The repository 'https://packages.microsoft.com/repos/edge stable InRelease' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details.原因是没有将edge的公钥导入到Ubuntu服务器使用如下命令导入sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys EB3E94ADBE1229CF最后重新执行sudo apt update正常更新