diff --git a/include/MUtils/Global.h b/include/MUtils/Global.h
index 3c460e6..16f2654 100644
--- a/include/MUtils/Global.h
+++ b/include/MUtils/Global.h
@@ -80,9 +80,9 @@ namespace MUtils
 
 	//Random
 	MUTILS_API void seed_rand(void);
-	MUTILS_API QString rand_str(const bool &bLong = false);
-	MUTILS_API quint32 next_rand32(void);
-	MUTILS_API quint64 next_rand64(void);
+	MUTILS_API QString next_rand_str(const bool &bLong = false);
+	MUTILS_API quint32 next_rand_u32(void);
+	MUTILS_API quint64 next_rand_u64(void);
 
 	//File Name
 	MUTILS_API QString make_temp_file(const QString &basePath, const QString &extension, const bool placeholder = false);
diff --git a/src/DirLocker.h b/src/DirLocker.h
index d10e4ff..e7f4248 100644
--- a/src/DirLocker.h
+++ b/src/DirLocker.h
@@ -64,7 +64,7 @@ namespace MUtils
 				}
 				for(int i = 0; i < 32; i++)
 				{
-					m_lockFile.reset(new QFile(QString("%1/~%2.lck").arg(m_dirPath, MUtils::rand_str())));
+					m_lockFile.reset(new QFile(QString("%1/~%2.lck").arg(m_dirPath, MUtils::next_rand_str())));
 					if(m_lockFile->open(QIODevice::WriteOnly | QIODevice::Truncate | QIODevice::Unbuffered))
 					{
 						if(m_lockFile->write(testData) >= testData.size())
diff --git a/src/Global.cpp b/src/Global.cpp
index 2e13b09..2cfce45 100644
--- a/src/Global.cpp
+++ b/src/Global.cpp
@@ -54,6 +54,10 @@
 // Random Support
 ///////////////////////////////////////////////////////////////////////////////
 
+#ifndef _CRT_RAND_S
+#define rand_s(X) (true)
+#endif
+
 //Robert Jenkins' 96 bit Mix Function
 static unsigned int mix_function(const unsigned int x, const unsigned int y, const unsigned int z)
 {
@@ -79,37 +83,34 @@ void MUtils::seed_rand(void)
 	qsrand(mix_function(clock(), time(NULL), _getpid()));
 }
 
-quint32 MUtils::next_rand32(void)
+quint32 MUtils::next_rand_u32(void)
 {
-	quint32 rnd = 0xDEADBEEF;
-
-#ifdef _CRT_RAND_S
-	if(rand_s(&rnd) == 0)
+	quint32 rnd;
+	if (rand_s(&rnd))
 	{
-		return rnd;
+		for (size_t i = 0; i < sizeof(quint32); i += 2)
+		{
+			rnd = (rnd << 16) ^ qrand();
+		}
 	}
-#endif //_CRT_RAND_S
-
-	for(size_t i = 0; i < sizeof(quint32); i++)
-	{
-		rnd = (rnd << 8) ^ qrand();
-	}
-
 	return rnd;
 }
 
-quint64 MUtils::next_rand64(void)
+quint64 MUtils::next_rand_u64(void)
 {
-	return (quint64(next_rand32()) << 32) | quint64(next_rand32());
+	return (quint64(next_rand_u32()) << 32) | quint64(next_rand_u32());
 }
 
-QString MUtils::rand_str(const bool &bLong)
+QString MUtils::next_rand_str(const bool &bLong)
 {
-	if(!bLong)
+	if (bLong)
 	{
-		return QString::number(next_rand64(), 16).rightJustified(16, QLatin1Char('0'));
+		return next_rand_str(false) + next_rand_str(false);
+	}
+	else
+	{
+		return QString::number(next_rand_u64(), 16).rightJustified(16, QLatin1Char('0'));
 	}
-	return QString("%1%2").arg(rand_str(false), rand_str(false));
 }
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -163,7 +164,7 @@ QString MUtils::make_temp_file(const QString &basePath, const QString &extension
 {
 	for(int i = 0; i < 4096; i++)
 	{
-		const QString tempFileName = QString("%1/%2.%3").arg(basePath, rand_str(), extension);
+		const QString tempFileName = QString("%1/%2.%3").arg(basePath, next_rand_str(), extension);
 		if(!QFileInfo(tempFileName).exists())
 		{
 			if(placeholder)
@@ -252,7 +253,7 @@ static QString try_create_subfolder(const QString &baseDir, const QString &postf
 
 static MUtils::Internal::DirLock *try_init_temp_folder(const QString &baseDir)
 {
-	const QString tempPath = try_create_subfolder(baseDir, MUtils::rand_str());
+	const QString tempPath = try_create_subfolder(baseDir, MUtils::next_rand_str());
 	if(!tempPath.isEmpty())
 	{
 		for(int i = 0; i < 32; i++)
diff --git a/src/UpdateChecker.cpp b/src/UpdateChecker.cpp
index 1f80199..e9ff390 100644
--- a/src/UpdateChecker.cpp
+++ b/src/UpdateChecker.cpp
@@ -218,7 +218,7 @@ static QStringList buildRandomList(const char *const values[])
 	QStringList list;
 	for (int index = 0; values[index]; index++)
 	{
-		const int pos = next_rand32() % (index + 1);
+		const int pos = next_rand_u32() % (index + 1);
 		list.insert(pos, QString::fromLatin1(values[index]));
 	}
 	return list;
@@ -455,7 +455,7 @@ bool UpdateChecker::tryUpdateMirror(UpdateCheckerInfo *updateInfo, const QString
 	bool success = false;
 	log("", "Trying mirror:", url);
 
-	const QString randPart = rand_str();
+	const QString randPart = next_rand_str();
 	const QString outFileVers = QString("%1/%2.ver").arg(temp_folder(), randPart);
 	const QString outFileSign = QString("%1/%2.sig").arg(temp_folder(), randPart);