diff --git a/rd_setup.ps1 b/rd_setup.ps1
index 1c5211d..6f8b79a 100644
--- a/rd_setup.ps1
+++ b/rd_setup.ps1
@@ -86,6 +86,42 @@ Write-Host "        Downloading..." -ForegroundColor Gray
 Invoke-WebRequest -Uri $rdUrl -OutFile $rdPath -ErrorAction Stop
 Write-Host "        Downloaded" -ForegroundColor Green
 
+# Proveryaem est li uzhe ustanovlennyj RustDesk i udalyaem
+$oldUninstallPath = "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\rustdesk"
+$oldVersion = $null
+if (Test-Path $oldUninstallPath) {
+    $oldVersion = (Get-ItemProperty $oldUninstallPath).DisplayVersion
+}
+
+if ($oldVersion) {
+    Write-Host "        Old version detected: $oldVersion" -ForegroundColor Yellow
+    Write-Host "        Removing old version..." -ForegroundColor Gray
+    
+    # Probuem cherez UninstallString
+    $uninstallStr = (Get-ItemProperty $oldUninstallPath).UninstallString
+    if ($uninstallStr) {
+        if ($uninstallStr -match '"(.+)"') {
+            $uninstallExe = $matches[1]
+            $uninstallArgs = '/S'
+            if ($uninstallStr -match '"(.+)"\s+(.+)') {
+                $uninstallExe = $matches[1]
+                $uninstallArgs = $matches[2]
+            }
+            Start-Process $uninstallExe -ArgumentList $uninstallArgs -Wait -NoNewWindow -ErrorAction SilentlyContinue
+            Start-Sleep -Seconds 3
+        }
+    }
+    
+    # Takzhe cherez WMI
+    $oldApp = Get-WmiObject -Class Win32_Product -Filter "Name='RustDesk'" -ErrorAction SilentlyContinue
+    if ($oldApp) {
+        $oldApp.Uninstall() | Out-Null
+        Start-Sleep -Seconds 3
+    }
+    
+    Write-Host "        Old version removed" -ForegroundColor Green
+}
+
 Write-Host "        Installing..." -ForegroundColor Gray
 $result = Start-Process $rdPath -ArgumentList "/VERYSILENT /SUPPRESSMSGBOXES /NORESTART /SP-" -Wait -PassThru -NoNewWindow