diff --git a/win-sysadmin/README.md b/win-sysadmin/README.md
index 168b1ac..5608fe5 100644
--- a/win-sysadmin/README.md
+++ b/win-sysadmin/README.md
@@ -8,6 +8,38 @@ include_toc: true
 
 Windows-R Tastenkombination, anschliessend `shell:startup`
 
+## TLS Version aktiv/inaktiv?
+
+```
+# Function to check TLS version
+function Test-TlsVersion {
+    param (
+        [string]$ComputerName = "localhost"
+    )
+
+    try {
+        # Test TLS 1.0
+        $tls10 = [System.Net.ServicePointManager]::SecurityProtocol -band [System.Net.SecurityProtocolType]::Tls10
+
+        # Test TLS 1.1
+        $tls11 = [System.Net.ServicePointManager]::SecurityProtocol -band [System.Net.SecurityProtocolType]::Tls11
+
+        # Test TLS 1.2
+        $tls12 = [System.Net.ServicePointManager]::SecurityProtocol -band [System.Net.SecurityProtocolType]::Tls12
+
+        Write-Host "TLS 1.0 Enabled: $($tls10 -ne 0)" -ForegroundColor Green
+        Write-Host "TLS 1.1 Enabled: $($tls11 -ne 0)" -ForegroundColor Green
+        Write-Host "TLS 1.2 Enabled: $($tls12 -ne 0)" -ForegroundColor Green
+    }
+    catch {
+        Write-Host "Error: $_" -ForegroundColor Red
+    }
+}
+
+# Check TLS versions on the local machine
+Test-TlsVersion
+```
+
 ## .NET
 
 ### .NET Version herausfinden