diff --git a/config/cmake/H5pubconf.h.in b/config/cmake/H5pubconf.h.in
index 6a0dbf27aba..13378931d9f 100644
--- a/config/cmake/H5pubconf.h.in
+++ b/config/cmake/H5pubconf.h.in
@@ -325,9 +325,6 @@
 /* Define to 1 if you have the `sigtimedwait' function. */
 #cmakedefine H5_HAVE_SIGTIMEDWAIT @H5_HAVE_SIGTIMEDWAIT@
 
-/* Define to 1 if you have the `snprintf' function. */
-#cmakedefine H5_HAVE_SNPRINTF @H5_HAVE_SNPRINTF@
-
 /* Define to 1 if you have the `srandom' function. */
 #cmakedefine H5_HAVE_SRANDOM @H5_HAVE_SRANDOM@
 
@@ -420,9 +417,6 @@
 /* Define to 1 if you have the `vasprintf' function. */
 #cmakedefine H5_HAVE_VASPRINTF @H5_HAVE_VASPRINTF@
 
-/* Define to 1 if you have the `vsnprintf' function. */
-#cmakedefine H5_HAVE_VSNPRINTF @H5_HAVE_VSNPRINTF@
-
 /* Define to 1 if you have the `waitpid' function. */
 #cmakedefine H5_HAVE_WAITPID @H5_HAVE_WAITPID@
 
diff --git a/config/cmake_ext_mod/ConfigureChecks.cmake b/config/cmake_ext_mod/ConfigureChecks.cmake
index 15faf67448c..d89d57c04a5 100644
--- a/config/cmake_ext_mod/ConfigureChecks.cmake
+++ b/config/cmake_ext_mod/ConfigureChecks.cmake
@@ -492,7 +492,6 @@ CHECK_FUNCTION_EXISTS (sigsetjmp         ${HDF_PREFIX}_HAVE_SIGSETJMP)
 CHECK_FUNCTION_EXISTS (sigprocmask       ${HDF_PREFIX}_HAVE_SIGPROCMASK)
 CHECK_FUNCTION_EXISTS (sigtimedwait      ${HDF_PREFIX}_HAVE_SIGTIMEDWAIT)
 
-CHECK_FUNCTION_EXISTS (snprintf          ${HDF_PREFIX}_HAVE_SNPRINTF)
 CHECK_FUNCTION_EXISTS (srandom           ${HDF_PREFIX}_HAVE_SRANDOM)
 CHECK_FUNCTION_EXISTS (strdup            ${HDF_PREFIX}_HAVE_STRDUP)
 CHECK_FUNCTION_EXISTS (symlink           ${HDF_PREFIX}_HAVE_SYMLINK)
@@ -504,13 +503,6 @@ CHECK_FUNCTION_EXISTS (asprintf          ${HDF_PREFIX}_HAVE_ASPRINTF)
 CHECK_FUNCTION_EXISTS (vasprintf         ${HDF_PREFIX}_HAVE_VASPRINTF)
 CHECK_FUNCTION_EXISTS (waitpid           ${HDF_PREFIX}_HAVE_WAITPID)
 
-CHECK_FUNCTION_EXISTS (vsnprintf         ${HDF_PREFIX}_HAVE_VSNPRINTF)
-if (MINGW OR NOT WINDOWS)
-  if (${HDF_PREFIX}_HAVE_VSNPRINTF)
-    HDF_FUNCTION_TEST (VSNPRINTF_WORKS)
-  endif ()
-endif ()
-
 #-----------------------------------------------------------------------------
 # sigsetjmp is special; may actually be a macro
 #-----------------------------------------------------------------------------
diff --git a/config/cmake_ext_mod/HDFTests.c b/config/cmake_ext_mod/HDFTests.c
index 0c3b7b75e08..b8a6af14acc 100644
--- a/config/cmake_ext_mod/HDFTests.c
+++ b/config/cmake_ext_mod/HDFTests.c
@@ -64,31 +64,6 @@ main ()
 
 #endif
 
-#ifdef VSNPRINTF_WORKS
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-
-int test_vsnprintf(const char *fmt,...)
-{
-    va_list     ap;
-    char *s = malloc(16);
-    int ret;
-
-    va_start(ap, fmt);
-    ret=vsnprintf(s,16,"%s",ap);
-    va_end(ap);
-
-    return(ret!=42 ? 1 : 0);
-}
-
-int main(void)
-{
-    return(test_vsnprintf("%s","A string that is longer than 16 characters"));
-}
-#endif
-
-
 #ifdef HAVE_ATTRIBUTE
 
 #if 0
diff --git a/configure.ac b/configure.ac
index f12e3217f9b..256e1756020 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2024,9 +2024,9 @@ AC_CHECK_FUNCS([frexpl gethostname getrusage gettimeofday])
 AC_CHECK_FUNCS([lstat rand_r random setsysinfo])
 AC_CHECK_FUNCS([signal longjmp setjmp siglongjmp sigsetjmp sigprocmask])
 AC_CHECK_FUNCS([sigtimedwait])
-AC_CHECK_FUNCS([snprintf srandom strdup symlink system])
+AC_CHECK_FUNCS([srandom strdup symlink system])
 AC_CHECK_FUNCS([timespeccmp])
-AC_CHECK_FUNCS([tmpfile asprintf vasprintf vsnprintf waitpid])
+AC_CHECK_FUNCS([tmpfile asprintf vasprintf waitpid])
 
 ## ----------------------------------------------------------------------
 ## Check compiler characteristics