Windows Installer Error 1618: 'Another installation is already in progress' during installation/uninstallation

Issue

Windows Installer Error 1618: 'Another installation is already in progress' during installation/uninstallation

Product Line

Pelco Video Management

Environment

DSNVS 7.7.309

Cause

The Windows Installer process that was running can only run one installation at a time when running the DSNVS software.

Resolution

This Error indicates that a Windows Installer Service is currently being utilized for another installation or update at this time. Alongside other program's Installations, Windows Updates can also occupy the Windows Installer service and will thus need to complete prior to running DSNVS installation. However, if the any previous installation was unsuccessful and did not close properly, you can end the Windows Installer Process manually.

  1. Open Task Manager and navigate to the "Processes" tab
  2. Select "Show all processes from all users" if it is not already.
  3. Locate and end any "MSIExec.exe" entries you see.
  4. After these steps, attempt the installation once more.