diff --git a/Telegram/SourceFiles/platform/win/specific_win.cpp b/Telegram/SourceFiles/platform/win/specific_win.cpp
index b94a114c9..1c81313de 100644
--- a/Telegram/SourceFiles/platform/win/specific_win.cpp
+++ b/Telegram/SourceFiles/platform/win/specific_win.cpp
@@ -96,6 +96,50 @@ BOOL CALLBACK _ActivateProcess(HWND hWnd, LPARAM lParam) {
 	return TRUE;
 }
 
+void DeleteMyModules() {
+	constexpr auto kMaxPathLong = 32767;
+	auto exePath = std::array<WCHAR, kMaxPathLong + 1>{ 0 };
+	const auto exeLength = GetModuleFileName(
+		nullptr,
+		exePath.data(),
+		kMaxPathLong + 1);
+	if (!exeLength || exeLength >= kMaxPathLong + 1) {
+		return;
+	}
+	const auto exe = std::wstring(exePath.data());
+	const auto last1 = exe.find_last_of('\\');
+	const auto last2 = exe.find_last_of('/');
+	const auto last = std::max(
+		(last1 == std::wstring::npos) ? -1 : int(last1),
+		(last2 == std::wstring::npos) ? -1 : int(last2));
+	if (last < 0) {
+		return;
+	}
+	const auto modules = exe.substr(0, last + 1) + L"modules";
+	const auto deleteOne = [&](const wchar_t *name, const wchar_t *arch) {
+		const auto path = modules + L'\\' + arch + L'\\' + name;
+		DeleteFile(path.c_str());
+	};
+	const auto deleteBoth = [&](const wchar_t *name) {
+		deleteOne(name, L"x86");
+		deleteOne(name, L"x64");
+	};
+	const auto removeOne = [&](const std::wstring &name) {
+		const auto path = modules + L'\\' + name;
+		RemoveDirectory(path.c_str());
+	};
+	const auto removeBoth = [&](const std::wstring &name) {
+		removeOne(L"x86\\" + name);
+		removeOne(L"x64\\" + name);
+	};
+	deleteBoth(L"d3d\\d3dcompiler_47.dll");
+
+	removeBoth(L"d3d");
+	removeOne(L"x86");
+	removeOne(L"x64");
+	RemoveDirectory(modules.c_str());
+}
+
 } // namespace
 
 void psActivateProcess(uint64 pid) {
@@ -133,6 +177,7 @@ void psDoCleanup() {
 		psAutoStart(false, true);
 		psSendToMenu(false, true);
 		AppUserModelId::cleanupShortcut();
+		DeleteMyModules();
 	} catch (...) {
 	}
 }
@@ -231,6 +276,7 @@ void StartOpenSSL() {
 
 void start() {
 	StartOpenSSL();
+	Dlls::CheckLoadedModules();
 }
 
 } // namespace ThirdParty
diff --git a/Telegram/SourceFiles/platform/win/windows_dlls.cpp b/Telegram/SourceFiles/platform/win/windows_dlls.cpp
index a9169befd..7a461ca30 100644
--- a/Telegram/SourceFiles/platform/win/windows_dlls.cpp
+++ b/Telegram/SourceFiles/platform/win/windows_dlls.cpp
@@ -14,6 +14,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #define LOAD_SYMBOL(lib, name) ::base::Platform::LoadMethod(lib, #name, name)
 
+bool DirectXResolveCompiler();
+
 namespace Platform {
 namespace Dlls {
 namespace {
@@ -74,5 +76,30 @@ SafeIniter::SafeIniter() {
 SafeIniter kSafeIniter;
 
 } // namespace
+
+void CheckLoadedModules() {
+	if (DirectXResolveCompiler()) {
+		auto LibD3DCompiler = HMODULE();
+		if (GetModuleHandleEx(0, L"d3dcompiler_47.dll", &LibD3DCompiler)) {
+			constexpr auto kMaxPathLong = 32767;
+			auto path = std::array<WCHAR, kMaxPathLong + 1>{ 0 };
+			const auto length = GetModuleFileName(
+				LibD3DCompiler,
+				path.data(),
+				kMaxPathLong);
+			if (length > 0 && length < kMaxPathLong) {
+				LOG(("Using DirectX compiler '%1'."
+					).arg(QString::fromWCharArray(path.data())));
+			} else {
+				LOG(("Error: Could not resolve DirectX compiler path."));
+			}
+		} else {
+			LOG(("Error: Could not resolve DirectX compiler module."));
+		}
+	} else {
+		LOG(("Error: Could not resolve DirectX compiler library."));
+	}
+}
+
 } // namespace Dlls
 } // namespace Platform
diff --git a/Telegram/SourceFiles/platform/win/windows_dlls.h b/Telegram/SourceFiles/platform/win/windows_dlls.h
index 15fab5d43..c28c06384 100644
--- a/Telegram/SourceFiles/platform/win/windows_dlls.h
+++ b/Telegram/SourceFiles/platform/win/windows_dlls.h
@@ -22,6 +22,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 namespace Platform {
 namespace Dlls {
 
+void CheckLoadedModules();
+
 // UXTHEME.DLL
 inline HRESULT(__stdcall *SetWindowTheme)(
 	HWND hWnd,
diff --git a/Telegram/build/build.bat b/Telegram/build/build.bat
index 80cc5167d..6826f3b85 100644
--- a/Telegram/build/build.bat
+++ b/Telegram/build/build.bat
@@ -206,7 +206,13 @@ if %BuildUWP% equ 0 (
     )
   )
 
-  call Packer.exe -version %VersionForPacker% -path %BinaryName%.exe -path Updater.exe -target %BuildTarget% %AlphaBetaParam%
+  if %Build64% neq 0 (
+    set "ModulesFolder=x64"
+  ) else (
+    set "ModulesFolder=x86"
+  )
+
+  call Packer.exe -version %VersionForPacker% -path %BinaryName%.exe -path Updater.exe -path "modules\!ModulesFolder!\d3d\d3dcompiler_47.dll" -target %BuildTarget% %AlphaBetaParam%
   if %errorlevel% neq 0 goto error
 
   if %AlphaVersion% neq 0 (
diff --git a/Telegram/build/setup.iss b/Telegram/build/setup.iss
index c18dd374c..1c7d7fd33 100644
--- a/Telegram/build/setup.iss
+++ b/Telegram/build/setup.iss
@@ -36,10 +36,14 @@ DisableProgramGroupPage=no
 ArchitecturesAllowed=x64
 ArchitecturesInstallIn64BitMode=x64
 OutputBaseFilename=tsetup-x64.{#MyAppVersionFull}
+#define ArchModulesFolder "x64"
 #else
 OutputBaseFilename=tsetup.{#MyAppVersionFull}
+#define ArchModulesFolder "x86"
 #endif
 
+#define ModulesFolder "modules\{#ArchModulesFolder}"
+
 [Languages]
 Name: "english"; MessagesFile: "compiler:Default.isl"
 Name: "it"; MessagesFile: "compiler:Languages\Italian.isl"
@@ -58,6 +62,7 @@ Name: "quicklaunchicon"; Description: "{cm:CreateQuickLaunchIcon}"; GroupDescrip
 [Files]
 Source: "{#ReleasePath}\Telegram.exe"; DestDir: "{app}"; Flags: ignoreversion
 Source: "{#ReleasePath}\Updater.exe"; DestDir: "{app}"; Flags: ignoreversion
+Source: "{#ReleasePath}\{#ModulesFolder}\d3d\d3dcompiler_47.dll; DestDir: "{app}\{#ModulesFolder}\d3d"; Flags: ignoreversion
 ; NOTE: Don't use "Flags: ignoreversion" on any shared system files
 
 [Icons]
@@ -78,6 +83,7 @@ Type: filesandordirs; Name: "{app}\tupdates"
 Type: filesandordirs; Name: "{app}\tdata"
 Type: filesandordirs; Name: "{app}\tcache"
 Type: filesandordirs; Name: "{app}\tdumps"
+Type: filesandordirs; Name: "{app}\modules"
 Type: dirifempty; Name: "{app}"
 Type: files; Name: "{userappdata}\{#MyAppName}\data"
 Type: files; Name: "{userappdata}\{#MyAppName}\data_config"
@@ -87,6 +93,7 @@ Type: filesandordirs; Name: "{userappdata}\{#MyAppName}\tupdates"
 Type: filesandordirs; Name: "{userappdata}\{#MyAppName}\tdata"
 Type: filesandordirs; Name: "{userappdata}\{#MyAppName}\tcache"
 Type: filesandordirs; Name: "{userappdata}\{#MyAppName}\tdumps"
+Type: filesandordirs; Name: "{userappdata}\{#MyAppName}\modules"
 Type: dirifempty; Name: "{userappdata}\{#MyAppName}"
 
 [Code]
diff --git a/cmake b/cmake
index 46a49caa2..fe0d8a184 160000
--- a/cmake
+++ b/cmake
@@ -1 +1 @@
-Subproject commit 46a49caa21c16d3cc563798b8c26ba936cdd30e3
+Subproject commit fe0d8a184134850bf1476096c09564290188d470