diff --git a/dlls/msi/tests/install.c b/dlls/msi/tests/install.c
index ed1ebc2d96f..badbb0972ea 100644
--- a/dlls/msi/tests/install.c
+++ b/dlls/msi/tests/install.c
@@ -3944,6 +3944,7 @@ static void test_publish_registeruser(void)
     DeleteFile(msifile);
     DeleteFile("msitest\\maximus");
     RemoveDirectory("msitest");
+    LocalFree(usersid);
 }
 
 static void test_publish_processcomponents(void)
@@ -4068,6 +4069,7 @@ static void test_publish_processcomponents(void)
     DeleteFile(msifile);
     DeleteFile("msitest\\maximus");
     RemoveDirectory("msitest");
+    LocalFree(usersid);
 }
 
 static void test_publish(void)
diff --git a/dlls/msi/tests/msi.c b/dlls/msi/tests/msi.c
index f25d5803628..8da34990006 100644
--- a/dlls/msi/tests/msi.c
+++ b/dlls/msi/tests/msi.c
@@ -1201,6 +1201,7 @@ static void test_MsiQueryFeatureState(void)
     RegCloseKey(compkey2);
     RegCloseKey(localkey);
     RegCloseKey(userkey);
+    LocalFree(usersid);
 }
 
 static void test_MsiQueryComponentState(void)
@@ -1520,6 +1521,7 @@ static void test_MsiQueryComponentState(void)
     RegDeleteKeyA(compkey, "");
     RegCloseKey(prodkey);
     RegCloseKey(compkey);
+    LocalFree(usersid);
 }
 
 static void test_MsiGetComponentPath(void)
@@ -1872,6 +1874,7 @@ static void test_MsiGetComponentPath(void)
     RegCloseKey(prodkey);
     RegCloseKey(compkey);
     DeleteFileA("C:\\imapath");
+    LocalFree(usersid);
 }
 
 static void test_MsiGetProductCode(void)
@@ -2128,6 +2131,7 @@ static void test_MsiGetProductCode(void)
     RegDeleteValueA(compkey, prod2_squashed);
     RegDeleteKeyA(compkey, "");
     RegCloseKey(compkey);
+    LocalFree(usersid);
 }
 
 static void test_MsiEnumClients(void)
@@ -2314,6 +2318,7 @@ static void test_MsiEnumClients(void)
     RegDeleteValueA(compkey, prod2_squashed);
     RegDeleteKeyA(compkey, "");
     RegCloseKey(compkey);
+    LocalFree(usersid);
 }
 
 static void get_version_info(LPSTR path, LPSTR *vercheck, LPDWORD verchecksz,
@@ -3845,6 +3850,7 @@ static void test_MsiGetProductInfo(void)
     RegCloseKey(localkey);
     RegCloseKey(source);
     RegCloseKey(prodkey);
+    LocalFree(usersid);
 }
 
 static void test_MsiGetProductInfoEx(void)
@@ -6582,6 +6588,7 @@ static void test_MsiGetProductInfoEx(void)
     RegDeleteValueA(prodkey, "HelpLink");
     RegDeleteKeyA(prodkey, "");
     RegCloseKey(prodkey);
+    LocalFree(usersid);
 }
 
 #define INIT_USERINFO() \
@@ -7161,6 +7168,7 @@ static void test_MsiGetUserInfo(void)
     RegCloseKey(userprod);
     RegDeleteKeyA(prodkey, "");
     RegCloseKey(prodkey);
+    LocalFree(usersid);
 }
 
 static void test_MsiOpenProduct(void)
@@ -7473,6 +7481,7 @@ static void test_MsiOpenProduct(void)
     RegCloseKey(prodkey);
 
     DeleteFileA(msifile);
+    LocalFree(usersid);
 }
 
 static void test_MsiEnumPatchesEx_usermanaged(LPCSTR usersid, LPCSTR expectedsid)
@@ -9201,6 +9210,7 @@ static void test_MsiEnumPatchesEx(void)
     test_MsiEnumPatchesEx_userunmanaged(NULL, usersid);
     /* FIXME: Successfully test userunmanaged with a different user */
     test_MsiEnumPatchesEx_machine();
+    LocalFree(usersid);
 }
 
 static void test_MsiEnumPatches(void)
@@ -9864,6 +9874,7 @@ static void test_MsiEnumPatches(void)
     RegCloseKey(udprod);
     RegDeleteKeyA(prodkey, "");
     RegCloseKey(prodkey);
+    LocalFree(usersid);
 }
 
 static void test_MsiGetPatchInfoEx(void)
@@ -10876,6 +10887,7 @@ static void test_MsiGetPatchInfoEx(void)
     RegCloseKey(props);
     RegDeleteKeyA(udprod, "");
     RegCloseKey(udprod);
+    LocalFree(usersid);
 }
 
 static void test_MsiEnumProducts(void)
diff --git a/dlls/msi/tests/source.c b/dlls/msi/tests/source.c
index 5a51c66c3f8..fd983ae50f0 100644
--- a/dlls/msi/tests/source.c
+++ b/dlls/msi/tests/source.c
@@ -628,6 +628,7 @@ static void test_MsiSourceListGetInfo(void)
     RegDeleteKeyA(userkey, "");
     RegCloseKey(hkey);
     RegCloseKey(userkey);
+    LocalFree(usersid);
 }
 
 static void test_MsiSourceListAddSourceEx(void)
@@ -1605,6 +1606,7 @@ static void test_MsiSourceListEnumSources(void)
     RegCloseKey(source);
     RegDeleteKeyA(prodkey, "");
     RegCloseKey(prodkey);
+    LocalFree(usersid);
 }
 
 static void test_MsiSourceListSetInfo(void)
@@ -2015,6 +2017,7 @@ static void test_MsiSourceListSetInfo(void)
     RegCloseKey(source);
     RegDeleteKeyA(prodkey, "");
     RegCloseKey(prodkey);
+    LocalFree(usersid);
 }
 
 static void test_MsiSourceListAddMediaDisk(void)
@@ -2312,6 +2315,7 @@ static void test_MsiSourceListAddMediaDisk(void)
     RegCloseKey(source);
     RegDeleteKeyA(prodkey, "");
     RegCloseKey(prodkey);
+    LocalFree(usersid);
 }
 
 static void test_MsiSourceListEnumMediaDisks(void)
@@ -3114,6 +3118,7 @@ static void test_MsiSourceListEnumMediaDisks(void)
     RegCloseKey(source);
     RegDeleteKeyA(prodkey, "");
     RegCloseKey(prodkey);
+    LocalFree(usersid);
 }
 
 static void test_MsiSourceListAddSource(void)
@@ -3369,6 +3374,7 @@ static void test_MsiSourceListAddSource(void)
     RegCloseKey(source);
     RegDeleteKeyA(prodkey, "");
     RegCloseKey(prodkey);
+    LocalFree(usersid);
 }
 
 START_TEST(source)