diff --git a/ci/cmake-preloads/config-android.txt b/ci/cmake-preloads/config-android.txt
index 64b732432..36db9fe31 100644
--- a/ci/cmake-preloads/config-android.txt
+++ b/ci/cmake-preloads/config-android.txt
@@ -6,6 +6,8 @@ set(FREERDP_EXTERNAL_SSL_PATH $ENV{ANDROID_SSL_PATH} CACHE PATH "android ssl")
 # ANDROID_NDK and ANDROID_SDK must be set as environment variable
 #set(ANDROID_NDK $ENV{ANDROID_SDK} CACHE PATH "Android NDK")
 #set(ANDROID_SDK "${ANDROID_NDK}" CACHE PATH "android SDK")
+set(CMAKE_C_STANDARD 23 CACHE STRING "preload")
+set(CMAKE_C_FLAGS "-Wno-pre-c23-compat" CACHE STRING "preload")
 set(WITH_FREERDP_DEPRECATED_COMMANDLINE ON CACHE BOOL "Enable deprecated command line options")
 set(WITH_KRB5 OFF CACHE BOOL "Kerberos support")
 set(WITH_CLIENT_SDL OFF CACHE BOOL "SDL client")
diff --git a/ci/cmake-preloads/config-coverity.txt b/ci/cmake-preloads/config-coverity.txt
index f2e025926..c2add011b 100644
--- a/ci/cmake-preloads/config-coverity.txt
+++ b/ci/cmake-preloads/config-coverity.txt
@@ -1,4 +1,6 @@
 set(CMAKE_VERBOSE_MAKEFILE ON CACHE BOOL "preload")
+set(CMAKE_C_STANDARD 23 CACHE STRING "preload")
+set(CMAKE_C_FLAGS "-Wno-pre-c23-compat" CACHE STRING "preload")
 set(WINPR_UTILS_IMAGE_JPEG ON CACHE BOOL "preload")
 set(WINPR_UTILS_IMAGE_WEBP ON CACHE BOOL "preload")
 set(WINPR_UTILS_IMAGE_PNG ON CACHE BOOL "preload")
diff --git a/ci/cmake-preloads/config-freebsd.txt b/ci/cmake-preloads/config-freebsd.txt
index b16e81378..755a4ec1d 100644
--- a/ci/cmake-preloads/config-freebsd.txt
+++ b/ci/cmake-preloads/config-freebsd.txt
@@ -2,6 +2,8 @@ message("PRELOADING cache")
 set(CMAKE_VERBOSE_MAKEFILE ON CACHE BOOL "preload")
 set(BUILD_TESTING_INTERNAL ON CACHE BOOL "preload")
 set(WITH_MANPAGES ON CACHE BOOL "preload")
+set(CMAKE_C_STANDARD 23 CACHE STRING "preload")
+set(CMAKE_C_FLAGS "-Wno-pre-c23-compat" CACHE STRING "preload")
 set(CMAKE_BUILD_TYPE "Debug" CACHE STRING "preload")
 set(WITH_CAIRO ON CACHE BOOL "preload")
 set(WITH_ALSA ON CACHE BOOL "preload")
diff --git a/ci/cmake-preloads/config-ios-shared.txt b/ci/cmake-preloads/config-ios-shared.txt
index 41ca459f9..0a983ebc2 100644
--- a/ci/cmake-preloads/config-ios-shared.txt
+++ b/ci/cmake-preloads/config-ios-shared.txt
@@ -1,4 +1,6 @@
 message("PRELOADING iOS cache")
+set(CMAKE_C_STANDARD 23 CACHE STRING "preload")
+set(CMAKE_C_FLAGS "-Wno-pre-c23-compat" CACHE STRING "preload")
 set(CMAKE_VERBOSE_MAKEFILE ON CACHE BOOL "preload")
 set(CMAKE_TOOLCHAIN_FILE "${CMAKE_SOURCE_DIR}/cmake/ios.toolchain.cmake" CACHE PATH "cmake toolchain file")
 set(CMAKE_BUILD_TYPE "Release" CACHE STRING "build type")
diff --git a/ci/cmake-preloads/config-ios.txt b/ci/cmake-preloads/config-ios.txt
index 37dae19b6..0cc967f92 100644
--- a/ci/cmake-preloads/config-ios.txt
+++ b/ci/cmake-preloads/config-ios.txt
@@ -1,5 +1,7 @@
 message("PRELOADING iOS cache")
 set(CMAKE_VERBOSE_MAKEFILE ON CACHE BOOL "preload")
+set(CMAKE_C_STANDARD 23 CACHE STRING "preload")
+set(CMAKE_C_FLAGS "-Wno-pre-c23-compat" CACHE STRING "preload")
 set(CMAKE_TOOLCHAIN_FILE "${CMAKE_SOURCE_DIR}/cmake/ios.toolchain.cmake" CACHE PATH "cmake toolchain file")
 set(CMAKE_BUILD_TYPE "Debug" CACHE STRING "build type")
 set(CMAKE_OSX_ARCHITECTURES "arm64" CACHE STRING "iOS platform to build")
diff --git a/ci/cmake-preloads/config-linux-all.txt b/ci/cmake-preloads/config-linux-all.txt
index 6fb498a16..1a3063caa 100644
--- a/ci/cmake-preloads/config-linux-all.txt
+++ b/ci/cmake-preloads/config-linux-all.txt
@@ -1,4 +1,6 @@
 message("PRELOADING cache")
+set(CMAKE_C_STANDARD 23 CACHE STRING "preload")
+set(CMAKE_C_FLAGS "-Wno-pre-c23-compat" CACHE STRING "preload")
 set(CMAKE_VERBOSE_MAKEFILE ON CACHE BOOL "preload")
 set(BUILD_TESTING_INTERNAL ON CACHE BOOL "preload")
 set(WITH_MANPAGES ON CACHE BOOL "preload")
diff --git a/ci/cmake-preloads/config-linux-alt-arch.txt b/ci/cmake-preloads/config-linux-alt-arch.txt
index 4e5c7a7e1..824cfdfae 100644
--- a/ci/cmake-preloads/config-linux-alt-arch.txt
+++ b/ci/cmake-preloads/config-linux-alt-arch.txt
@@ -1,4 +1,6 @@
 message("PRELOADING cache")
+set(CMAKE_C_STANDARD 23 CACHE STRING "preload")
+set(CMAKE_C_FLAGS "-Wno-pre-c23-compat" CACHE STRING "preload")
 set(CMAKE_VERBOSE_MAKEFILE ON CACHE BOOL "preload")
 set(BUILD_TESTING_INTERNAL ON CACHE BOOL "preload")
 set(WITH_MANPAGES OFF CACHE BOOL "preload")
diff --git a/ci/cmake-preloads/config-macosx.txt b/ci/cmake-preloads/config-macosx.txt
index f5b19f5e8..ef433c066 100644
--- a/ci/cmake-preloads/config-macosx.txt
+++ b/ci/cmake-preloads/config-macosx.txt
@@ -1,4 +1,6 @@
 message("PRELOADING mac cache")
+set(CMAKE_C_STANDARD 23 CACHE STRING "preload")
+set(CMAKE_C_FLAGS "-Wno-pre-c23-compat" CACHE STRING "preload")
 set(CMAKE_VERBOSE_MAKEFILE ON CACHE BOOL "preload")
 set(WITH_MANPAGES OFF CACHE BOOL "man pages")
 set(CMAKE_BUILD_TYPE "Debug" CACHE STRING "build type")
diff --git a/ci/cmake-preloads/config-oss-fuzz.cmake b/ci/cmake-preloads/config-oss-fuzz.cmake
index 34cb17067..ac9fb5a2a 100644
--- a/ci/cmake-preloads/config-oss-fuzz.cmake
+++ b/ci/cmake-preloads/config-oss-fuzz.cmake
@@ -1,4 +1,6 @@
 message("PRELOADING cache")
+set(CMAKE_C_STANDARD 23 CACHE STRING "preload")
+set(CMAKE_C_FLAGS "-Wno-pre-c23-compat" CACHE STRING "preload")
 set(CMAKE_VERBOSE_MAKEFILE ON CACHE BOOL "preload")
 set(WITH_VERBOSE_WINPR_ASSERT ON CACHE BOOL "oss fuzz")
 
diff --git a/ci/cmake-preloads/config-qa-static.cmake b/ci/cmake-preloads/config-qa-static.cmake
index 0dcb1e420..735857834 100644
--- a/ci/cmake-preloads/config-qa-static.cmake
+++ b/ci/cmake-preloads/config-qa-static.cmake
@@ -1,4 +1,6 @@
 message("PRELOADING cache")
+set(CMAKE_C_STANDARD 23 CACHE STRING "preload")
+set(CMAKE_C_FLAGS "-Wno-pre-c23-compat" CACHE STRING "preload")
 set(CMAKE_VERBOSE_MAKEFILE ON CACHE BOOL "preload")
 set(WITH_SERVER ON CACHE BOOL "qa default")
 set(WITH_SAMPLE ON CACHE BOOL "qa default")
diff --git a/ci/cmake-preloads/config-qa.cmake b/ci/cmake-preloads/config-qa.cmake
index 358872bad..990cdb6e4 100644
--- a/ci/cmake-preloads/config-qa.cmake
+++ b/ci/cmake-preloads/config-qa.cmake
@@ -1,4 +1,6 @@
 set(BUILD_TESTING_INTERNAL ON CACHE BOOL "qa default")
+set(CMAKE_C_STANDARD 23 CACHE STRING "preload")
+set(CMAKE_C_FLAGS "-Wno-pre-c23-compat" CACHE STRING "preload")
 set(WITH_STREAMPOOL_DEBUG ON CACHE BOOL "preload")
 set(CMAKE_VERBOSE_MAKEFILE ON CACHE BOOL "preload")
 set(ENABLE_WARNING_VERBOSE ON CACHE BOOL "preload")
diff --git a/ci/cmake-preloads/config-ubuntu-1204.txt b/ci/cmake-preloads/config-ubuntu-1204.txt
deleted file mode 100644
index 7e2050049..000000000
--- a/ci/cmake-preloads/config-ubuntu-1204.txt
+++ /dev/null
@@ -1,15 +0,0 @@
-message("PRELOADING cache")
-set(CMAKE_VERBOSE_MAKEFILE ON CACHE BOOL "preload")
-set(WITH_MANPAGES ON CACHE BOOL "man pages")
-set(CMAKE_BUILD_TYPE "Debug" CACHE STRING "build type")
-set(WITH_CUPS OFF CACHE BOOL "CUPS printing")
-set(WITH_KRB5 ON CACHE BOOL "Kerberos support")
-set(WITH_ALSA OFF CACHE BOOL "alsa audio")
-set(WITH_FFMPEG OFF CACHE BOOL "ffmepg support")
-set(WITH_XV OFF CACHE BOOL "xvideo support")
-set(BUILD_TESTING_INTERNAL ON CACHE BOOL "build testing")
-set(WITH_XSHM OFF CACHE BOOL "build with xshm support")
-set(WITH_SERVER ON CACHE BOOL "build with server")
-set(WITH_SAMPLE ON CACHE BOOL "build with sample")
-set(WITH_SANITIZE_ADDRESS ON)
-set(WITH_FREERDP_DEPRECATED_COMMANDLINE ON CACHE BOOL "Enable deprecated command line options")
diff --git a/ci/cmake-preloads/config-windows.txt b/ci/cmake-preloads/config-windows.txt
index 3ee05f10a..68387d254 100644
--- a/ci/cmake-preloads/config-windows.txt
+++ b/ci/cmake-preloads/config-windows.txt
@@ -1,4 +1,5 @@
 message("PRELOADING windows cache")
+set(CMAKE_C_STANDARD 23 CACHE STRING "preload")
 set(CMAKE_VERBOSE_MAKEFILE ON CACHE BOOL "preload")
 set(CMAKE_WINDOWS_VERSION "WIN7" CACHE STRING "windows build version")
 set(BUILD_SHARED_LIBS OFF CACHE BOOL "build static linked executable")