diff --git a/Agent.Installer.Win/Services/InstallerService.cs b/Agent.Installer.Win/Services/InstallerService.cs
index 51866f1b3..ddd7f92c6 100644
--- a/Agent.Installer.Win/Services/InstallerService.cs
+++ b/Agent.Installer.Win/Services/InstallerService.cs
@@ -100,7 +100,7 @@ public async Task<bool> Uninstall()
 
                 ProcessEx.StartHidden("netsh", "advfirewall firewall delete rule name=\"Remotely Desktop Unattended\"").WaitForExit();
 
-                GetRegistryBaseKey().DeleteSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Remotely", false);
+                GetRegistryBaseKey().DeleteSubKeyTree(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Remotely", false);
 
                 return true;
             }
@@ -260,13 +260,15 @@ private async Task DownloadRemotelyAgent(string serverUrl)
             else
             {
                 ProgressMessageChanged.Invoke(this, "Downloading Remotely agent.");
-                var client = new WebClient();
-                client.DownloadProgressChanged += (sender, args) =>
+                using (var client = new WebClient())
                 {
-                    ProgressValueChanged?.Invoke(this, args.ProgressPercentage);
-                };
+                    client.DownloadProgressChanged += (sender, args) =>
+                    {
+                        ProgressValueChanged?.Invoke(this, args.ProgressPercentage);
+                    };
 
-                await client.DownloadFileTaskAsync($"{serverUrl}/Downloads/Remotely-Win10-{Platform}.zip", targetFile);
+                    await client.DownloadFileTaskAsync($"{serverUrl}/Downloads/Remotely-Win10-{Platform}.zip", targetFile);
+                }
             }
 
             ProgressMessageChanged.Invoke(this, "Extracting Remotely files.");
diff --git a/Agent.Installer.Win/ViewModels/MainWindowViewModel.cs b/Agent.Installer.Win/ViewModels/MainWindowViewModel.cs
index 60d71a023..3ccb3e215 100644
--- a/Agent.Installer.Win/ViewModels/MainWindowViewModel.cs
+++ b/Agent.Installer.Win/ViewModels/MainWindowViewModel.cs
@@ -276,13 +276,29 @@ private bool CheckIsAdministrator()
 
         private bool CheckParams()
         {
-            var result = !string.IsNullOrWhiteSpace(OrganizationID) || !string.IsNullOrWhiteSpace(ServerUrl);
-            if (!result)
+            if (string.IsNullOrWhiteSpace(OrganizationID) || string.IsNullOrWhiteSpace(ServerUrl))
             {
                 Logger.Write("ServerUrl or OrganizationID param is missing.  Unable to install.");
-                MessageBoxEx.Show("Required settings are missing.  Please enter a server URL and organization ID.", "Invalid Installer", MessageBoxButton.OK, MessageBoxImage.Error);
+                MessageBoxEx.Show("Required settings are missing.  Please enter a server URL and organization ID.", "Invalid Input", MessageBoxButton.OK, MessageBoxImage.Error);
+                return false;
             }
-            return result;
+
+            if (!Guid.TryParse(OrganizationID, out _))
+            {
+                Logger.Write("OrganizationID is not a valid GUID.");
+                MessageBoxEx.Show("Organization ID must be a valid GUID.", "Invalid Organization ID", MessageBoxButton.OK, MessageBoxImage.Error);
+                return false;
+            }
+
+            if (!Uri.TryCreate(ServerUrl, UriKind.Absolute, out var serverUri) ||
+                (serverUri.Scheme != Uri.UriSchemeHttp && serverUri.Scheme != Uri.UriSchemeHttps))
+            {
+                Logger.Write("ServerUrl is not valid.");
+                MessageBoxEx.Show("Server URL must be a valid Uri.", "Invalid Server URL", MessageBoxButton.OK, MessageBoxImage.Error);
+                return false;
+            }
+
+            return true;
         }
 
         private void CopyCommandLineArgs()
diff --git a/Utilities/Publish.ps1 b/Utilities/Publish.ps1
index 1c40d9270..44c3e95be 100644
--- a/Utilities/Publish.ps1
+++ b/Utilities/Publish.ps1
@@ -85,18 +85,23 @@ if ([string]::IsNullOrWhiteSpace($MSBuildPath) -or !(Test-Path -Path $MSBuildPat
     return
 }
 
-# Add Current Version file to root content folder for client update checks.
-# TODO: Remove after a few releases.
-Set-Content -Path "$Root\Server\CurrentVersion.txt" -Value $CurrentVersion.Trim() -Encoding UTF8 -Force
 
 # Update hostname.
 if ($Hostname.Length -gt 0) {
+    [Uri]$HostNameUri = $null
+
+    if (![System.Uri]::TryCreate($HostName, [System.UriKind]::Absolute, [ref] $HostNameUri) -or 
+        ($HostNameUri.Scheme -notlike [System.Uri]::UriSchemeHttp -and $HostNameUri.Scheme -notlike [System.Uri]::UriSchemeHttps)) {
+            Write-Error "`nThe HostName variable is not a valid HTTP Uri."
+            return
+    }
+
     Replace-LineInFile -FilePath "$Root\Desktop.Win\Services\Config.cs" -MatchPattern "public string Host " -ReplaceLineWith "public string Host { get; set; } = `"$($Hostname)`";" -MaxCount 1
     Replace-LineInFile -FilePath "$Root\Desktop.Linux\Services\Config.cs" -MatchPattern "public string Host " -ReplaceLineWith "public string Host { get; set; } = `"$($Hostname)`";" -MaxCount 1
     Replace-LineInFile -FilePath "$Root\Agent.Installer.Win\ViewModels\MainWindowViewModel.cs" -MatchPattern "private string serverUrl" -ReplaceLineWith "private string serverUrl = `"$($Hostname)`";" -MaxCount 1
 }
 else {
-    Write-Host "`nWARNING: No hostname parameter was specified.  The server name will need to be entered manually in the desktop client.`n" -ForegroundColor DarkYellow
+    Write-Warning "`nNo hostname parameter was specified.  The server name will need to be entered manually in the desktop client.`n"
 }
 
     
@@ -209,5 +214,5 @@ if ($RID.Length -gt 0 -and $OutDir.Length -gt 0) {
     dotnet publish /p:Version=$CurrentVersion /p:FileVersion=$CurrentVersion --runtime $RID --configuration Release --output $OutDir "$Root\Server\"
 }
 else {
-    Write-Host "`r`nSkipping server deployment.  Params -outdir and -rid not specified." -ForegroundColor DarkYellow
+    Write-Host "`nSkipping server deployment.  Params -outdir and -rid not specified." -ForegroundColor DarkYellow
 }
\ No newline at end of file