E: GPG error: http://mirrors.oschina.net trusty-backports InRelease: Clearsigned file isn't valid, got 'NODATA' (does the network require authentication?) 更新源的时候出现了这个错误提示. 网上没找到答案,估计是源有问题,把这个出错的源删除了就可以了. 或者找个全新的源…

今天在更新运行apt-get update的时候出现了如下的错误: W: GPG error: http://extras.ubuntu.com trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY F60F4B3D7FA2AF80 解决方法: sudo apt-key adv --keyserver keyserver.ub…

报错信息: W: GPG error: http://ppa.launchpad.net trusty InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 8CF63AD3F06FC659 解决: sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 8CF63AD…

  This morning when I do apt-get update on my new Ubuntu 14.04 server, I got these error messages: Reading package lists… Done W: GPG error: http://security.ubuntu.com trusty-security Release: The following signatures couldn’t be verified because the…

W: GPG error: http://extras.ubuntu.com trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 16126D3A3E5C1192 sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 40976EAF437D05B5 su…

对于错误 GPG error: http://ppa.launchpad.net precise Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B70731143DD9F856 可以通过以下方式解决 sudo apt-get clean sudo mv /var/lib/apt/lists /tmp sudo mkdir -p /v…

在用 sudo apt-get update 时出现这样的报错: W: GPG error: http://archive.ubuntukylin.com:10006/ubuntukylin xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 8D5A09DC9B929006 解决方案: sudo apt-key adv…

From:http://www.njava.com/njava-626.html 更换163源后,更新源时出现错误. # apt-get update W: GPG error: http://extras.ubuntu.com precise Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 16126D3A3E5C1192 使用go…

GPG error: The following signatures couldn't be verified because the public key is not available I have had it happen on several occasions where I try to update software and I get a GPG error like this: $ sudo apt-get update W: GPG error: http://inve…

Ubuntu 16.04.2执行 sudo apt-get update .警告如下:W: GPG error: http://dl.google.com/linux/chrome/deb stable Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6494C6D6997C215E 报错原因是:google chrome 改变了li…