Ubuntu – Unable to lock the administration directory (/var/lib/dpkg/) is another process using it

aptdpkgpackage-management

I get this error when trying to use apt-get:

E: Could not get lock /var/lib/dpkg/lock - open (11 Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/) is another process using it?  

How can I fix this?

Best Answer

  • This should be used as last resort. If you use this carelessly you can end up with a broken system. Please try the other answers first before doing this.

    You can delete the lock file with the following command:

    sudo rm /var/lib/apt/lists/lock
    

    You may also need to delete the lock file in the cache directory

    sudo rm /var/cache/apt/archives/lock
    sudo rm /var/lib/dpkg/lock
    

    After that, try opening Synaptic again.

  • Related Question