added a few safety checks before install

Install-LiquidFilesOutlookAgent.ps1

@@ -20,6 +20,13 @@ If (-not [string]::IsNullOrEmpty($LFHost) ) {
 }
 Else { $INSTALLER_ARGS = '' }
 
+## Stop any running LiquidFilesWindowsAgent process
+$RunningProcess = Get-Process -Name "LiquidFilesWindowsAgent"
+If ($RunningProcess) {
+    LogMsg "Stopping the LiquidFiles agent"
+    $RunningProcess | Stop-Process -Force
+}
+
 ## Run the installer
 $INSTALLER = Download-File -URL $MSIURL
 LogMsg "Installing Liquid Files Outlook Agent from ""${INSTALLER}"""
@@ -31,4 +38,18 @@ Try {
     LogMsg "Deleting downloaded installation package"
     Remove-Item $INSTALLER -Force -ErrorAction SilentlyContinue
 }
-Catch { LogErr $_.Exception.Message }
+Catch { LogErr $_.Exception.Message }
+
+## Start the agent
+$PathToAgentExe64 = "${Env:ProgramFiles(x86)}\LiquidFiles Windows Agent\LiquidFilesWindowsAgent.exe"
+$PathToAgentExe32 = "${Env:ProgramFiles}\LiquidFiles Windows Agent\LiquidFilesWindowsAgent.exe"
+If ( Test-Path $PathToAgentExe64 ) {
+    $PathToAgentExe = $PathToAgentExe64
+} ElseIf ( Test-Path $PathToAgentExe32 ) {
+    $PathToAgentExe = $PathToAgentExe32
+}
+If ($PathToAgentExe) {
+    LogMsg "Starting LiquidFiles agent"
+    Try { Start-Process $PathToAgentExe }
+    Catch { LogErr $_.Exception.Message }
+}