Best Download Packages Whilst Offline (257): Pk-client-error-quark Cannot

Sometimes the specific mirror you are connected to is failing or out of sync, which PackageKit interprets as being "offline".

If the system is "stuck" in an offline state, killing the PackageKit daemon often forces it to restart and re-detect the network. sudo pkill -f packagekitd Use code with caution. After running this, try your installation in the GUI again. 3. Change Your Download Server Sometimes the specific mirror you are connected to

: On some versions of Ubuntu, these two services fail to pass connectivity status correctly to PackageKit. Sometimes the specific mirror you are connected to

If you were trying to install a specific driver (e.g., NVIDIA), find the driver name and install it directly: sudo apt install nvidia-driver-535 Use code with caution. Sometimes the specific mirror you are connected to