diff --git a/CMakeLists.txt b/CMakeLists.txt
index 17611d21b..3fb484513 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -264,8 +264,8 @@ set(CPACK_NSIS_EXECUTABLES_DIRECTORY "sbin")
 set(CPACK_PACKAGE_EXECUTABLES "Icinga2SetupAgent;Icinga 2 Agent Wizard;icinga-studio;Icinga Studio")
 set(CPACK_NSIS_MUI_FINISHPAGE_RUN "Icinga2SetupAgent")
 set(CPACK_NSIS_EXTRA_PREINSTALL_COMMANDS "nsExec::Exec 'net stop icinga2'")
-set(CPACK_NSIS_EXTRA_INSTALL_COMMANDS "${CPACK_NSIS_EXTRA_INSTALL_COMMANDS}\nnsExec::Exec 'icacls \\\"$INSTDIR\\\" /grant NetworkService:(oi)(ci)m'")
-set(CPACK_NSIS_EXTRA_INSTALL_COMMANDS "${CPACK_NSIS_EXTRA_INSTALL_COMMANDS}\nnsExec::Exec 'icacls \\\"$INSTDIR\\\\etc\\\" /inheritance:r /grant:r NetworkService:(oi)(ci)m /grant:r Administrators:(oi)(ci)f'")
+set(CPACK_NSIS_EXTRA_INSTALL_COMMANDS "${CPACK_NSIS_EXTRA_INSTALL_COMMANDS}\nnsExec::Exec 'icacls \\\"$INSTDIR\\\" /grant *S-1-5-20:(oi)(ci)m'")
+set(CPACK_NSIS_EXTRA_INSTALL_COMMANDS "${CPACK_NSIS_EXTRA_INSTALL_COMMANDS}\nnsExec::Exec 'icacls \\\"$INSTDIR\\\\etc\\\" /inheritance:r /grant:r *S-1-5-20:(oi)(ci)m /grant:r *S-1-5-32-544:(oi)(ci)f'")
 set(CPACK_NSIS_EXTRA_INSTALL_COMMANDS "${CPACK_NSIS_EXTRA_INSTALL_COMMANDS}\nCreateDirectory '$INSTDIR\\\\etc\\\\icinga2\\\\pki'")
 set(CPACK_NSIS_EXTRA_INSTALL_COMMANDS "${CPACK_NSIS_EXTRA_INSTALL_COMMANDS}\nCreateDirectory '$INSTDIR\\\\var\\\\cache\\\\icinga2'")
 set(CPACK_NSIS_EXTRA_INSTALL_COMMANDS "${CPACK_NSIS_EXTRA_INSTALL_COMMANDS}\nCreateDirectory '$INSTDIR\\\\var\\\\lib\\\\icinga2\\\\pki'")