diff --git a/mingw-w64-crt/Makefile.am b/mingw-w64-crt/Makefile.am
index 3afd57c..f97b9fc 100644
--- a/mingw-w64-crt/Makefile.am
+++ b/mingw-w64-crt/Makefile.am
@@ -1681,6 +1681,7 @@
 		%/libapi-ms-win-core-localization-l2-1-0.a \
 		%/libapi-ms-win-core-memory-l1-1-2.a \
 		%/libapi-ms-win-core-memory-l1-1-3.a \
+		%/libapi-ms-win-core-processenvironment-l1-1-0.a \
 		%/libapi-ms-win-core-processenvironment-l1-2-0.a \
 		%/libapi-ms-win-core-processthreads-l1-1-0.a \
 		%/libapi-ms-win-core-processthreads-l1-1-1.a \
@@ -1772,6 +1773,7 @@
 		%/libapi-ms-win-core-memory-l1-1-2.a \
 		%/libapi-ms-win-core-memory-l1-1-3.a \
 		%/libapi-ms-win-core-normalization-l1-1-0.a \
+		%/libapi-ms-win-core-processenvironment-l1-1-0.a \
 		%/libapi-ms-win-core-processenvironment-l1-2-0.a \
 		%/libapi-ms-win-core-processthreads-l1-1-0.a \
 		%/libapi-ms-win-core-processthreads-l1-1-1.a \
diff --git a/mingw-w64-crt/lib-common/api-ms-win-core-processenvironment-l1-1-0.def b/mingw-w64-crt/lib-common/api-ms-win-core-processenvironment-l1-1-0.def
new file mode 100644
index 0000000..a2bf16e
--- /dev/null
+++ b/mingw-w64-crt/lib-common/api-ms-win-core-processenvironment-l1-1-0.def
@@ -0,0 +1,17 @@
+LIBRARY api-ms-win-core-processenvironment-l1-1-0
+
+EXPORTS
+
+ExpandEnvironmentStringsA
+ExpandEnvironmentStringsW
+FreeEnvironmentStringsA
+FreeEnvironmentStringsW
+GetEnvironmentStrings
+GetEnvironmentStringsW
+GetEnvironmentVariableA
+GetEnvironmentVariableW
+GetStdHandle
+SetEnvironmentVariableA
+SetEnvironmentVariableW
+SetStdHandle
+SetStdHandleEx
diff --git a/mingw-w64-crt/lib-common/mincore.mri b/mingw-w64-crt/lib-common/mincore.mri
index 5747194..99cf86c 100644
--- a/mingw-w64-crt/lib-common/mincore.mri
+++ b/mingw-w64-crt/lib-common/mincore.mri
@@ -57,7 +57,7 @@
 ; FIXME libapi-ms-win-core-namedpipe-l1-2-2.a
 ; FIXME libapi-ms-win-core-namespace-l1-1-0.a
 ; FIXME libapi-ms-win-core-path-l1-1-0.a
-; FIXME libapi-ms-win-core-processenvironment-l1-1-0.a
+ADDLIB libapi-ms-win-core-processenvironment-l1-1-0.a
 ADDLIB libapi-ms-win-core-processenvironment-l1-2-0.a
 ; FIXME libapi-ms-win-core-processsnapshot-l1-1-0.a
 ADDLIB libapi-ms-win-core-processthreads-l1-1-0.a
diff --git a/mingw-w64-crt/lib-common/windowsapp.mri b/mingw-w64-crt/lib-common/windowsapp.mri
index cf956d3..d9da0d6 100644
--- a/mingw-w64-crt/lib-common/windowsapp.mri
+++ b/mingw-w64-crt/lib-common/windowsapp.mri
@@ -29,6 +29,7 @@
 ADDLIB libapi-ms-win-core-memory-l1-1-2.a
 ADDLIB libapi-ms-win-core-memory-l1-1-3.a
 ADDLIB libapi-ms-win-core-normalization-l1-1-0.a
+ADDLIB libapi-ms-win-core-processenvironment-l1-1-0.a
 ADDLIB libapi-ms-win-core-processenvironment-l1-2-0.a
 ADDLIB libapi-ms-win-core-processthreads-l1-1-0.a
 ADDLIB libapi-ms-win-core-processthreads-l1-1-1.a
diff --git a/mingw-w64-crt/lib32/api-ms-win-core-processenvironment-l1-1-0.def b/mingw-w64-crt/lib32/api-ms-win-core-processenvironment-l1-1-0.def
new file mode 100644
index 0000000..1d617fe
--- /dev/null
+++ b/mingw-w64-crt/lib32/api-ms-win-core-processenvironment-l1-1-0.def
@@ -0,0 +1,17 @@
+LIBRARY api-ms-win-core-processenvironment-l1-1-0
+
+EXPORTS
+
+ExpandEnvironmentStringsA@12
+ExpandEnvironmentStringsW@12
+FreeEnvironmentStringsA@4
+FreeEnvironmentStringsW@4
+GetEnvironmentStrings@0
+GetEnvironmentStringsW@0
+GetEnvironmentVariableA@12
+GetEnvironmentVariableW@12
+GetStdHandle@4
+SetEnvironmentVariableA@8
+SetEnvironmentVariableW@8
+SetStdHandle@8
+SetStdHandleEx@12
diff --git a/mingw-w64-headers/include/processenv.h b/mingw-w64-headers/include/processenv.h
index 7fb0b01..81c5436 100644
--- a/mingw-w64-headers/include/processenv.h
+++ b/mingw-w64-headers/include/processenv.h
@@ -15,32 +15,14 @@
 #endif
 
 #if WINAPI_FAMILY_PARTITION (WINAPI_PARTITION_DESKTOP)
-  WINBASEAPI LPCH WINAPI GetEnvironmentStrings (VOID);
-  WINBASEAPI LPWCH WINAPI GetEnvironmentStringsW (VOID);
   WINBASEAPI WINBOOL WINAPI SetEnvironmentStringsW (LPWCH NewEnvironment);
 
 #ifdef UNICODE
-#define GetEnvironmentStrings GetEnvironmentStringsW
 #define SetEnvironmentStrings SetEnvironmentStringsW
-#else
-#define GetEnvironmentStringsA GetEnvironmentStrings
 #endif
 
-  WINBASEAPI WINBOOL WINAPI FreeEnvironmentStringsA (LPCH penv);
-  WINBASEAPI WINBOOL WINAPI FreeEnvironmentStringsW (LPWCH penv);
-  WINBASEAPI HANDLE WINAPI GetStdHandle (DWORD nStdHandle);
-  WINBASEAPI WINBOOL WINAPI SetStdHandle (DWORD nStdHandle, HANDLE hHandle);
-#if _WIN32_WINNT >= 0x0600
-  WINBASEAPI WINBOOL WINAPI SetStdHandleEx (DWORD nStdHandle, HANDLE hHandle, PHANDLE phPrevValue);
-#endif
   WINBASEAPI LPSTR WINAPI GetCommandLineA (VOID);
   WINBASEAPI LPWSTR WINAPI GetCommandLineW (VOID);
-  WINBASEAPI DWORD WINAPI GetEnvironmentVariableA (LPCSTR lpName, LPSTR lpBuffer, DWORD nSize);
-  WINBASEAPI DWORD WINAPI GetEnvironmentVariableW (LPCWSTR lpName, LPWSTR lpBuffer, DWORD nSize);
-  WINBASEAPI WINBOOL WINAPI SetEnvironmentVariableA (LPCSTR lpName, LPCSTR lpValue);
-  WINBASEAPI WINBOOL WINAPI SetEnvironmentVariableW (LPCWSTR lpName, LPCWSTR lpValue);
-  WINBASEAPI DWORD WINAPI ExpandEnvironmentStringsA (LPCSTR lpSrc, LPSTR lpDst, DWORD nSize);
-  WINBASEAPI DWORD WINAPI ExpandEnvironmentStringsW (LPCWSTR lpSrc, LPWSTR lpDst, DWORD nSize);
   WINBASEAPI WINBOOL WINAPI SetCurrentDirectoryA (LPCSTR lpPathName);
   WINBASEAPI WINBOOL WINAPI SetCurrentDirectoryW (LPCWSTR lpPathName);
   WINBASEAPI DWORD WINAPI GetCurrentDirectoryA (DWORD nBufferLength, LPSTR lpBuffer);
@@ -50,14 +32,42 @@
   WINBASEAPI WINBOOL WINAPI NeedCurrentDirectoryForExePathA (LPCSTR ExeName);
   WINBASEAPI WINBOOL WINAPI NeedCurrentDirectoryForExePathW (LPCWSTR ExeName);
 
-#define ExpandEnvironmentStrings __MINGW_NAME_AW(ExpandEnvironmentStrings)
-#define FreeEnvironmentStrings __MINGW_NAME_AW(FreeEnvironmentStrings)
 #define GetCommandLine __MINGW_NAME_AW(GetCommandLine)
 #define GetCurrentDirectory __MINGW_NAME_AW(GetCurrentDirectory)
-#define GetEnvironmentVariable __MINGW_NAME_AW(GetEnvironmentVariable)
 #define NeedCurrentDirectoryForExePath __MINGW_NAME_AW(NeedCurrentDirectoryForExePath)
 #define SearchPath __MINGW_NAME_AW(SearchPath)
 #define SetCurrentDirectory __MINGW_NAME_AW(SetCurrentDirectory)
+
+#endif
+
+#if WINAPI_FAMILY_PARTITION (WINAPI_PARTITION_DESKTOP) || _WIN32_WINNT >= _WIN32_WINNT_WIN10
+
+  WINBASEAPI LPCH WINAPI GetEnvironmentStrings (VOID);
+  WINBASEAPI LPWCH WINAPI GetEnvironmentStringsW (VOID);
+
+#ifdef UNICODE
+#define GetEnvironmentStrings GetEnvironmentStringsW
+#else
+#define GetEnvironmentStringsA GetEnvironmentStrings
+#endif
+
+  WINBASEAPI HANDLE WINAPI GetStdHandle (DWORD nStdHandle);
+  WINBASEAPI DWORD WINAPI ExpandEnvironmentStringsA (LPCSTR lpSrc, LPSTR lpDst, DWORD nSize);
+  WINBASEAPI DWORD WINAPI ExpandEnvironmentStringsW (LPCWSTR lpSrc, LPWSTR lpDst, DWORD nSize);
+  WINBASEAPI WINBOOL WINAPI FreeEnvironmentStringsA (LPCH penv);
+  WINBASEAPI WINBOOL WINAPI FreeEnvironmentStringsW (LPWCH penv);
+  WINBASEAPI DWORD WINAPI GetEnvironmentVariableA (LPCSTR lpName, LPSTR lpBuffer, DWORD nSize);
+  WINBASEAPI DWORD WINAPI GetEnvironmentVariableW (LPCWSTR lpName, LPWSTR lpBuffer, DWORD nSize);
+  WINBASEAPI WINBOOL WINAPI SetEnvironmentVariableA (LPCSTR lpName, LPCSTR lpValue);
+  WINBASEAPI WINBOOL WINAPI SetEnvironmentVariableW (LPCWSTR lpName, LPCWSTR lpValue);
+  WINBASEAPI WINBOOL WINAPI SetStdHandle (DWORD nStdHandle, HANDLE hHandle);
+#if _WIN32_WINNT >= 0x0600
+  WINBASEAPI WINBOOL WINAPI SetStdHandleEx (DWORD nStdHandle, HANDLE hHandle, PHANDLE phPrevValue);
+#endif
+
+#define ExpandEnvironmentStrings __MINGW_NAME_AW(ExpandEnvironmentStrings)
+#define FreeEnvironmentStrings __MINGW_NAME_AW(FreeEnvironmentStrings)
+#define GetEnvironmentVariable __MINGW_NAME_AW(GetEnvironmentVariable)
 #define SetEnvironmentVariable __MINGW_NAME_AW(SetEnvironmentVariable)
 
 #endif