diff --git a/src/Platform.cpp b/src/Platform.cpp
index 84669b4f7..c159b0fff 100644
--- a/src/Platform.cpp
+++ b/src/Platform.cpp
@@ -28,9 +28,14 @@ ByteString ExecutableName()
 {
 	ByteString ret;
 #if defined(WIN)
-	char *name = (char *)malloc(64);
+	using Char = wchar_t;
+#else
+	using Char = char;
+#endif
+#if defined(WIN)
+	wchar_t *name = (wchar_t *)malloc(sizeof(wchar_t) * 64);
 	DWORD max = 64, res;
-	while ((res = GetModuleFileName(NULL, name, max)) >= max)
+	while ((res = GetModuleFileNameW(NULL, name, max)) >= max)
 	{
 #elif defined MACOSX
 	char *fn = (char*)malloc(64),*name = (char*)malloc(PATH_MAX);
@@ -59,10 +64,10 @@ ByteString ExecutableName()
 #endif
 #ifndef MACOSX
 		max *= 2;
-		char* realloced_name = (char *)realloc(name, max);
+		Char* realloced_name = (Char *)realloc(name, sizeof(Char) * max);
 		assert(realloced_name != NULL);
 		name = realloced_name;
-		memset(name, 0, max);
+		memset(name, 0, sizeof(Char) * max);
 	}
 #endif
 	if (res <= 0)
@@ -70,7 +75,11 @@ ByteString ExecutableName()
 		free(name);
 		return "";
 	}
+#if defined(WIN)
+	ret = WinNarrow(name);
+#else
 	ret = name;
+#endif
 	free(name);
 	return ret;
 }
@@ -81,7 +90,7 @@ void DoRestart()
 	if (exename.length())
 	{
 #ifdef WIN
-		int ret = int(INT_PTR(ShellExecute(NULL, NULL, exename.c_str(), NULL, NULL, SW_SHOWNORMAL)));
+		int ret = int(INT_PTR(ShellExecuteW(NULL, NULL, WinWiden(exename).c_str(), NULL, NULL, SW_SHOWNORMAL)));
 		if (ret <= 32)
 		{
 			fprintf(stderr, "cannot restart: ShellExecute(...) failed: code %i\n", ret);
@@ -109,7 +118,7 @@ void DoRestart()
 void OpenURI(ByteString uri)
 {
 #if defined(WIN)
-	if (int(INT_PTR(ShellExecute(NULL, NULL, uri.c_str(), NULL, NULL, SW_SHOWNORMAL))) <= 32)
+	if (int(INT_PTR(ShellExecuteW(NULL, NULL, WinWiden(uri).c_str(), NULL, NULL, SW_SHOWNORMAL))) <= 32)
 	{
 		fprintf(stderr, "cannot open URI: ShellExecute(...) failed\n");
 	}
@@ -167,4 +176,36 @@ void LoadFileInResource(int name, int type, unsigned int& size, const char*& dat
 #endif
 }
 
+#ifdef WIN
+ByteString WinNarrow(const std::wstring &source)
+{
+	int buffer_size = WideCharToMultiByte(CP_UTF8, 0, source.c_str(), source.size(), nullptr, 0, NULL, NULL);
+	if (!buffer_size)
+	{
+		return "";
+	}
+	std::string output(buffer_size, 0);
+	if (!WideCharToMultiByte(CP_UTF8, 0, source.c_str(), source.size(), &output[0], buffer_size, NULL, NULL))
+	{
+		return "";
+	}
+	return output;
+}
+
+std::wstring WinWiden(const ByteString &source)
+{
+	int buffer_size = MultiByteToWideChar(CP_UTF8, 0, source.c_str(), source.size(), nullptr, 0);
+	if (!buffer_size)
+	{
+		return L"";
+	}
+	std::wstring output(buffer_size, 0);
+	if (!MultiByteToWideChar(CP_UTF8, 0, source.c_str(), source.size(), &output[0], buffer_size))
+	{
+		return L"";
+	}
+	return output;
+}
+#endif
+
 }
diff --git a/src/Platform.h b/src/Platform.h
index 76dfbfb29..f0d71f3a2 100644
--- a/src/Platform.h
+++ b/src/Platform.h
@@ -4,6 +4,10 @@
 
 #include "common/String.h"
 
+#ifdef WIN
+# include <string>
+#endif
+
 namespace Platform
 {
 	ByteString ExecutableName();
@@ -15,6 +19,11 @@ namespace Platform
 	long unsigned int GetTime();
 
 	void LoadFileInResource(int name, int type, unsigned int& size, const char*& data);
+
+#ifdef WIN
+	ByteString WinNarrow(const std::wstring &source);
+	std::wstring WinWiden(const ByteString &source);
+#endif
 }
 
 #endif
diff --git a/src/client/Client.cpp b/src/client/Client.cpp
index 771cd3bf3..67ba7e202 100644
--- a/src/client/Client.cpp
+++ b/src/client/Client.cpp
@@ -162,57 +162,33 @@ bool Client::DoInstallation()
 	int returnval;
 	LONG rresult;
 	HKEY newkey;
-	ByteString currentfilename2 = Platform::ExecutableName();
-	// this isn't necessary but I don't feel like c++ifying this code right now
-	const char *currentfilename = currentfilename2.c_str();
-	char *iconname = NULL;
-	char *opencommand = NULL;
-	char *protocolcommand = NULL;
-	//char AppDataPath[MAX_PATH];
-	char *AppDataPath = NULL;
-	iconname = (char*)malloc(strlen(currentfilename)+6);
-	sprintf(iconname, "%s,-102", currentfilename);
+	ByteString currentfilename = Platform::ExecutableName();
+	ByteString iconname = currentfilename + ",-102";
+	ByteString AppDataPath = Platform::WinNarrow(_wgetcwd(NULL, 0));
+	ByteString opencommand = "\"" + currentfilename + "\" open \"%%1\" ddir \"" + AppDataPath + "\"";
+	ByteString protocolcommand = "\"" + currentfilename + "\" ddir \"" + AppDataPath + "\" ptsave \"%%1\"";
 
-	//Create Roaming application data folder
-	/*if(!SUCCEEDED(SHGetFolderPath(NULL, CSIDL_APPDATA|CSIDL_FLAG_CREATE, NULL, 0, AppDataPath)))
-	{
-		returnval = 0;
-		goto finalise;
-	}*/
-
-	AppDataPath = _getcwd(NULL, 0);
-
-	//Move Game executable into application data folder
-	//TODO: Implement
-
-	opencommand = (char*)malloc(strlen(currentfilename)+53+strlen(AppDataPath));
-	protocolcommand = (char*)malloc(strlen(currentfilename)+53+strlen(AppDataPath));
-	/*if((strlen(AppDataPath)+strlen(APPDATA_SUBDIR "\\Powder Toy"))<MAX_PATH)
-	{
-		strappend(AppDataPath, APPDATA_SUBDIR);
-		_mkdir(AppDataPath);
-		strappend(AppDataPath, "\\Powder Toy");
-		_mkdir(AppDataPath);
-	} else {
-		returnval = 0;
-		goto finalise;
-	}*/
-	sprintf(opencommand, "\"%s\" open \"%%1\" ddir \"%s\"", currentfilename, AppDataPath);
-	sprintf(protocolcommand, "\"%s\" ddir \"%s\" ptsave \"%%1\"", currentfilename, AppDataPath);
+	auto createKey = [](ByteString s, HKEY &k) {
+		return RegCreateKeyExW(HKEY_CURRENT_USER, Platform::WinWiden(s).c_str(), 0, 0, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &k, NULL);
+	};
+	auto setValue = [](HKEY k, ByteString s) {
+		auto w = Platform::WinWiden(s);
+		return RegSetValueExW(k, NULL, 0, REG_SZ, (LPBYTE)&w[0], w.size() + 1);
+	};
 
 	//Create protocol entry
-	rresult = RegCreateKeyEx(HKEY_CURRENT_USER, "Software\\Classes\\ptsave", 0, 0, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &newkey, NULL);
+	rresult = createKey("Software\\Classes\\ptsave", newkey);
 	if (rresult != ERROR_SUCCESS) {
 		returnval = 0;
 		goto finalise;
 	}
-	rresult = RegSetValueEx(newkey, 0, 0, REG_SZ, (LPBYTE)"Powder Toy Save", strlen("Powder Toy Save")+1);
+	rresult = setValue(newkey, "Powder Toy Save");
 	if (rresult != ERROR_SUCCESS) {
 		RegCloseKey(newkey);
 		returnval = 0;
 		goto finalise;
 	}
-	rresult = RegSetValueEx(newkey, (LPCSTR)"URL Protocol", 0, REG_SZ, (LPBYTE)"", strlen("")+1);
+	rresult = RegSetValueExW(newkey, (LPWSTR)L"URL Protocol", 0, REG_SZ, (LPBYTE)L"", 1);
 	if (rresult != ERROR_SUCCESS) {
 		RegCloseKey(newkey);
 		returnval = 0;
@@ -221,12 +197,12 @@ bool Client::DoInstallation()
 	RegCloseKey(newkey);
 
 	//Set Protocol DefaultIcon
-	rresult = RegCreateKeyEx(HKEY_CURRENT_USER, "Software\\Classes\\ptsave\\DefaultIcon", 0, 0, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &newkey, NULL);
+	rresult = createKey("Software\\Classes\\ptsave\\DefaultIcon", newkey);
 	if (rresult != ERROR_SUCCESS) {
 		returnval = 0;
 		goto finalise;
 	}
-	rresult = RegSetValueEx(newkey, 0, 0, REG_SZ, (LPBYTE)iconname, strlen(iconname)+1);
+	rresult = setValue(newkey, iconname);
 	if (rresult != ERROR_SUCCESS) {
 		RegCloseKey(newkey);
 		returnval = 0;
@@ -235,12 +211,12 @@ bool Client::DoInstallation()
 	RegCloseKey(newkey);
 
 	//Set Protocol Launch command
-	rresult = RegCreateKeyEx(HKEY_CURRENT_USER, "Software\\Classes\\ptsave\\shell\\open\\command", 0, 0, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &newkey, NULL);
+	rresult = createKey("Software\\Classes\\ptsave\\shell\\open\\command", newkey);
 	if (rresult != ERROR_SUCCESS) {
 		returnval = 0;
 		goto finalise;
 	}
-	rresult = RegSetValueEx(newkey, 0, 0, REG_SZ, (LPBYTE)protocolcommand, strlen(protocolcommand)+1);
+	rresult = setValue(newkey, protocolcommand);
 	if (rresult != ERROR_SUCCESS) {
 		RegCloseKey(newkey);
 		returnval = 0;
@@ -249,12 +225,12 @@ bool Client::DoInstallation()
 	RegCloseKey(newkey);
 
 	//Create extension entry
-	rresult = RegCreateKeyEx(HKEY_CURRENT_USER, "Software\\Classes\\.cps", 0, 0, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &newkey, NULL);
+	rresult = createKey("Software\\Classes\\.cps", newkey);
 	if (rresult != ERROR_SUCCESS) {
 		returnval = 0;
 		goto finalise;
 	}
-	rresult = RegSetValueEx(newkey, 0, 0, REG_SZ, (LPBYTE)"PowderToySave", strlen("PowderToySave")+1);
+	rresult = setValue(newkey, "PowderToySave");
 	if (rresult != ERROR_SUCCESS) {
 		RegCloseKey(newkey);
 		returnval = 0;
@@ -262,12 +238,12 @@ bool Client::DoInstallation()
 	}
 	RegCloseKey(newkey);
 
-	rresult = RegCreateKeyEx(HKEY_CURRENT_USER, "Software\\Classes\\.stm", 0, 0, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &newkey, NULL);
+	rresult = createKey("Software\\Classes\\.stm", newkey);
 	if (rresult != ERROR_SUCCESS) {
 		returnval = 0;
 		goto finalise;
 	}
-	rresult = RegSetValueEx(newkey, 0, 0, REG_SZ, (LPBYTE)"PowderToySave", strlen("PowderToySave")+1);
+	rresult = setValue(newkey, "PowderToySave");
 	if (rresult != ERROR_SUCCESS) {
 		RegCloseKey(newkey);
 		returnval = 0;
@@ -276,12 +252,12 @@ bool Client::DoInstallation()
 	RegCloseKey(newkey);
 
 	//Create program entry
-	rresult = RegCreateKeyEx(HKEY_CURRENT_USER, "Software\\Classes\\PowderToySave", 0, 0, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &newkey, NULL);
+	rresult = createKey("Software\\Classes\\PowderToySave", newkey);
 	if (rresult != ERROR_SUCCESS) {
 		returnval = 0;
 		goto finalise;
 	}
-	rresult = RegSetValueEx(newkey, 0, 0, REG_SZ, (LPBYTE)"Powder Toy Save", strlen("Powder Toy Save")+1);
+	rresult = setValue(newkey, "Powder Toy Save");
 	if (rresult != ERROR_SUCCESS) {
 		RegCloseKey(newkey);
 		returnval = 0;
@@ -290,12 +266,12 @@ bool Client::DoInstallation()
 	RegCloseKey(newkey);
 
 	//Set DefaultIcon
-	rresult = RegCreateKeyEx(HKEY_CURRENT_USER, "Software\\Classes\\PowderToySave\\DefaultIcon", 0, 0, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &newkey, NULL);
+	rresult = createKey("Software\\Classes\\PowderToySave\\DefaultIcon", newkey);
 	if (rresult != ERROR_SUCCESS) {
 		returnval = 0;
 		goto finalise;
 	}
-	rresult = RegSetValueEx(newkey, 0, 0, REG_SZ, (LPBYTE)iconname, strlen(iconname)+1);
+	rresult = setValue(newkey, iconname);
 	if (rresult != ERROR_SUCCESS) {
 		RegCloseKey(newkey);
 		returnval = 0;
@@ -304,12 +280,12 @@ bool Client::DoInstallation()
 	RegCloseKey(newkey);
 
 	//Set Launch command
-	rresult = RegCreateKeyEx(HKEY_CURRENT_USER, "Software\\Classes\\PowderToySave\\shell\\open\\command", 0, 0, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &newkey, NULL);
+	rresult = createKey("Software\\Classes\\PowderToySave\\shell\\open\\command", newkey);
 	if (rresult != ERROR_SUCCESS) {
 		returnval = 0;
 		goto finalise;
 	}
-	rresult = RegSetValueEx(newkey, 0, 0, REG_SZ, (LPBYTE)opencommand, strlen(opencommand)+1);
+	rresult = setValue(newkey, opencommand);
 	if (rresult != ERROR_SUCCESS) {
 		RegCloseKey(newkey);
 		returnval = 0;
@@ -320,10 +296,6 @@ bool Client::DoInstallation()
 	returnval = 1;
 	finalise:
 
-	free(iconname);
-	free(opencommand);
-	free(protocolcommand);
-
 	return returnval;
 #elif defined(LIN)
 	#include "icondoc.h"
@@ -451,10 +423,10 @@ std::vector<ByteString> Client::DirectorySearch(ByteString directory, ByteString
 	std::vector<ByteString> directoryList;
 #if defined(WIN) && !defined(__GNUC__)
 	//Windows
-	struct _finddata_t currentFile;
+	struct _wfinddata_t currentFile;
 	intptr_t findFileHandle;
 	ByteString fileMatch = directory + "*.*";
-	findFileHandle = _findfirst(fileMatch.c_str(), &currentFile);
+	findFileHandle = _wfindfirst(Platform::WinWiden(fileMatch).c_str(), &currentFile);
 	if (findFileHandle == -1L)
 	{
 #ifdef DEBUG
@@ -464,11 +436,11 @@ std::vector<ByteString> Client::DirectorySearch(ByteString directory, ByteString
 	}
 	do
 	{
-		ByteString currentFileName = ByteString(currentFile.name);
+		ByteString currentFileName = Platform::WinNarrow(currentFile.name);
 		if(currentFileName.length()>4)
 			directoryList.push_back(directory+currentFileName);
 	}
-	while (_findnext(findFileHandle, &currentFile) == 0);
+	while (_wfindnext(findFileHandle, &currentFile) == 0);
 	_findclose(findFileHandle);
 #else
 	//Linux or MinGW
@@ -519,7 +491,7 @@ std::vector<ByteString> Client::DirectorySearch(ByteString directory, ByteString
 int Client::MakeDirectory(const char * dirName)
 {
 #ifdef WIN
-	return _mkdir(dirName);
+	return _wmkdir(Platform::WinWiden(dirName).c_str());
 #else
 	return mkdir(dirName, 0755);
 #endif