diff --git a/optional/install-ausweisapp2.cmd b/optional/install-ausweisapp2.cmd
new file mode 100644
index 0000000..33614b2
--- /dev/null
+++ b/optional/install-ausweisapp2.cmd
@@ -0,0 +1,28 @@
+@echo off
+
+set OPT=..\optional
+set SOFTWARE=..\software
+set MSI=ausweisapp2.msi
+
+if NOT EXIST %SOFTWARE%\%MSI% (
+  echo ERROR: %SOFTWARE%\%MSI% not found!
+  exit /b
+)
+
+echo ####### %0 #######
+
+cd %SOFTWARE%
+@echo on
+msiexec /i %MSI% /quiet
+@echo off
+cd %OPT%
+
+echo removing Ausweisapp2 Desktop icon ...
+del /F /Q  %PUBLIC%\Desktop\AusweisApp2.lnk 2>nul
+
+rem refresh desktop (W10 style)
+ie4uinit.exe -show
+
+echo ####### %0 #######
+pause
+
diff --git a/software/optional.csv b/software/optional.csv
index d2df3d1..82e1b01 100644
--- a/software/optional.csv
+++ b/software/optional.csv
@@ -26,4 +26,4 @@ https://swupdate.openvpn.net/as/clients/openvpn-connect-2.7.1.111_signed.msi ope
 https://cdn-fastly.obsproject.com/downloads/OBS-Studio-27.0.1-Full-Installer-x64.exe obsstudio-setup.exe
 https://github.com/mhgschmidt/snapcontrol/releases/download/V1.07/snapcontrol.zip snapcontrol.zip
 https://download.oracle.com/java/17/latest/jdk-17_windows-x64_bin.exe java-setup.exe
-
+https://www.ausweisapp.bund.de/fileadmin/user_upload/Software/AusweisApp2-1.22.5.msi ausweisapp2.msi