diff --git a/mingw-w64-crt/Makefile.am b/mingw-w64-crt/Makefile.am
index 75271a8..9f845b3 100644
--- a/mingw-w64-crt/Makefile.am
+++ b/mingw-w64-crt/Makefile.am
@@ -2272,6 +2272,7 @@
 		%/libapi-ms-win-core-shutdown-ansi-l1-1-0.a \
 		%/libapi-ms-win-core-shutdown-l1-1-0.a \
 		%/libapi-ms-win-core-shutdown-l1-1-1.a \
+		%/libapi-ms-win-core-sidebyside-ansi-l1-1-0.a \
 		%/libapi-ms-win-core-string-l1-1-0.a \
 		%/libapi-ms-win-core-string-l2-1-0.a \
 		%/libapi-ms-win-core-string-l2-1-1.a \
diff --git a/mingw-w64-crt/lib-common/api-ms-win-core-sidebyside-ansi-l1-1-0.def b/mingw-w64-crt/lib-common/api-ms-win-core-sidebyside-ansi-l1-1-0.def
new file mode 100644
index 0000000..39a01ee
--- /dev/null
+++ b/mingw-w64-crt/lib-common/api-ms-win-core-sidebyside-ansi-l1-1-0.def
@@ -0,0 +1,6 @@
+LIBRARY api-ms-win-core-sidebyside-ansi-l1-1-0
+
+EXPORTS
+
+CreateActCtxA
+FindActCtxSectionStringA
diff --git a/mingw-w64-crt/lib-common/onecore_apiset.mri b/mingw-w64-crt/lib-common/onecore_apiset.mri
index 1fc1618..9418edd 100644
--- a/mingw-w64-crt/lib-common/onecore_apiset.mri
+++ b/mingw-w64-crt/lib-common/onecore_apiset.mri
@@ -132,7 +132,7 @@
 ADDLIB libapi-ms-win-core-shutdown-ansi-l1-1-0.a
 ADDLIB libapi-ms-win-core-shutdown-l1-1-0.a
 ADDLIB libapi-ms-win-core-shutdown-l1-1-1.a
-; FIXME libapi-ms-win-core-sidebyside-ansi-l1-1-0.a
+ADDLIB libapi-ms-win-core-sidebyside-ansi-l1-1-0.a
 ; FIXME libapi-ms-win-core-sidebyside-l1-1-0.a
 ; FIXME libapi-ms-win-core-state-helpers-l1-1-0.a
 ADDLIB libapi-ms-win-core-string-l1-1-0.a
diff --git a/mingw-w64-crt/lib32/api-ms-win-core-sidebyside-ansi-l1-1-0.def b/mingw-w64-crt/lib32/api-ms-win-core-sidebyside-ansi-l1-1-0.def
new file mode 100644
index 0000000..1113f0d
--- /dev/null
+++ b/mingw-w64-crt/lib32/api-ms-win-core-sidebyside-ansi-l1-1-0.def
@@ -0,0 +1,6 @@
+LIBRARY api-ms-win-core-sidebyside-ansi-l1-1-0
+
+EXPORTS
+
+CreateActCtxA@4
+FindActCtxSectionStringA@20