diff --git a/win/patches/V7_7_1.patch b/win/patches/V7_7_1.patch
new file mode 100644
index 0000000000..9bf684452d
--- /dev/null
+++ b/win/patches/V7_7_1.patch
@@ -0,0 +1,85 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index fd17283f77..7a6cef1ac2 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -431,6 +431,9 @@ if (WIN32)
+ else()
+   set (USE_D3D OFF)
+ endif()
++  # IfcOpenShell begin
++  add_definitions(-DHAVE_NO_DLL)
++  # IfcOpenShell end
+ 
+ # Enable/Disable the floating point exceptions (FPE) during runtime.
+ if (NOT BUILD_ENABLE_FPE_SIGNAL_HANDLER)
+@@ -826,6 +829,8 @@ if (EMSCRIPTEN)
+   list (REMOVE_ITEM BUILD_TOOLKITS ExpToCasExe)
+ endif()
+ 
++list (REMOVE_ITEM BUILD_TOOLKITS ExpToCasExe)
++
+ # bison
+ if (BUILD_YACCLEX)
+   OCCT_INCLUDE_CMAKE_FILE ("adm/cmake/bison")
+diff --git a/adm/cmake/occt_defs_flags.cmake b/adm/cmake/occt_defs_flags.cmake
+index 33b50e8ce7..6b0628235e 100644
+--- a/adm/cmake/occt_defs_flags.cmake
++++ b/adm/cmake/occt_defs_flags.cmake
+@@ -153,7 +153,23 @@ elseif (DEFINED CMAKE_COMPILER_IS_GNUCXX)
+   set (CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -s")
+ endif()
+ 
+-if (BUILD_RELEASE_DISABLE_EXCEPTIONS)
+-  set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -DNo_Exception")
+-  set (CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -DNo_Exception")
+-endif()
++# IfcOpenShell begin
++# https://salsa.debian.org/science-team/opencascade/blob/739e7e9c4fbe575165eb3ff0251774bfad27139e/debian/patches/enable-exception-handling.patch
++# if (BUILD_RELEASE_DISABLE_EXCEPTIONS)
++#   set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -DNo_Exception")
++#   set (CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -DNo_Exception")
++# endif()
++
++if (MSVC AND MSVC_STATIC_RUNTIME)
++    foreach(flag CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE CMAKE_CXX_FLAGS_MINSIZEREL
++            CMAKE_CXX_FLAGS_RELWITHDEBINFO CMAKE_C_FLAGS CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE
++            CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO)
++        if (${flag} MATCHES "/MD")
++            string(REGEX REPLACE "/MD" "/MT" ${flag} "${${flag}}")
++        endif()
++        if (${flag} MATCHES "/MDd")
++            string(REGEX REPLACE "/MDd" "/MTd" ${flag} "${${flag}}")
++        endif()
++    endforeach()
++endif()
++# IfcOpenShell end
+diff --git a/adm/cmake/occt_toolkit.cmake b/adm/cmake/occt_toolkit.cmake
+index 132890bc84..7e74b1f489 100644
+--- a/adm/cmake/occt_toolkit.cmake
++++ b/adm/cmake/occt_toolkit.cmake
+@@ -284,9 +284,22 @@ else()
+     else()
+       set (aReleasePdbConf)
+     endif()
+-    install (FILES  ${CMAKE_BINARY_DIR}/${OS_WITH_BIT}/${COMPILER}/bin\${OCCT_INSTALL_BIN_LETTER}/${PROJECT_NAME}.pdb
+-             CONFIGURATIONS Debug ${aReleasePdbConf} RelWithDebInfo
+-             DESTINATION "${INSTALL_DIR_BIN}\${OCCT_INSTALL_BIN_LETTER}")
++    # IfcOpenShell begin
++    if (BUILD_SHARED_LIBS)
++      install (FILES  ${CMAKE_BINARY_DIR}/${OS_WITH_BIT}/${COMPILER}/bin\${OCCT_INSTALL_BIN_LETTER}/${PROJECT_NAME}.pdb
++               CONFIGURATIONS Debug ${aReleasePdbConf} RelWithDebInfo
++               DESTINATION "${INSTALL_DIR_BIN}\${OCCT_INSTALL_BIN_LETTER}")
++    else()
++      set_target_properties (${PROJECT_NAME} PROPERTIES
++        COMPILE_PDB_NAME ${PROJECT_NAME}
++        COMPILE_PDB_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/${OS_WITH_BIT}/${COMPILER}/pdb/
++      )
++
++      install (FILES  ${CMAKE_BINARY_DIR}/${OS_WITH_BIT}/${COMPILER}/pdb/\${CMAKE_INSTALL_CONFIG_NAME}/${PROJECT_NAME}.pdb
++               CONFIGURATIONS Debug ${aReleasePdbConf} RelWithDebInfo
++               DESTINATION "${INSTALL_DIR_LIB}\${OCCT_INSTALL_BIN_LETTER}")
++    endif()
++    # IfcOpenShell end
+   endif()
+ 
+   if (BUILD_SHARED_LIBS AND NOT "${BUILD_SHARED_LIBRARY_NAME_POSTFIX}" STREQUAL "")