Locked Printer Driver

During the installation, PrnInst checks for applications that could lock the printer driver files and prevent the installation. The installation wizard displays locking applications.


You can't install, uninstall or upgrade locked drivers.

To unlock your printer driver:

  • Close the applications that are locking your printer driver.

  • Cancel the installation and restart your computer. After restarting, repeat the installation procedure.

  • If closing the application window has no effect, use Task Manager to end the tasks. See the examples below.

  • Continue with the installation. The installation process creates copies of driver files and completes the installation after you restart your computer.

Example: Windows Explorer locks driver

Restart Windows Explorer process in Task Manager > Processes tab. Right-click Windows Explorer process and click Restart.


Now you can click Retry in your driver installation window. Installation should be complete.