diff --git a/Install-LiquidFilesOutlookAgent.ps1 b/Install-LiquidFilesOutlookAgent.ps1
index afe36f3..bfbd1f9 100644
--- a/Install-LiquidFilesOutlookAgent.ps1
+++ b/Install-LiquidFilesOutlookAgent.ps1
@@ -15,6 +15,9 @@ If ($RunningProcess) {
     $RunningProcess | Stop-Process -Force
 }
 
+# Uninstall existing LiquidFiles agent/plugin
+Uninstall-MSI -APP_NAME 'LiquidFiles Windows Agent and Outlook Add-in'
+
 # Run the installer
 $INSTALLER = Download-File -URL $MSIURL
 LogMsg "Installing Liquid Files Outlook Agent from ""${INSTALLER}"""