diff --git a/launcher/tasks/ConcurrentTask.cpp b/launcher/tasks/ConcurrentTask.cpp
index 92b13cfa8..c042894b4 100644
--- a/launcher/tasks/ConcurrentTask.cpp
+++ b/launcher/tasks/ConcurrentTask.cpp
@@ -69,7 +69,7 @@ void ConcurrentTask::addTask(Task::Ptr task)
 void ConcurrentTask::executeTask()
 {
     for (auto i = 0; i < m_total_max_size; i++)
-        executeNextSubTask();
+        QMetaObject::invokeMethod(this, &ConcurrentTask::executeNextSubTask, Qt::QueuedConnection);
 }
 
 bool ConcurrentTask::abort()
@@ -127,7 +127,7 @@ void ConcurrentTask::executeNextSubTask()
         }
         return;
     }
-    if (m_doing.count() > m_total_max_size) {
+    if (m_doing.count() >= m_total_max_size) {
         return;
     }
 
diff --git a/launcher/tasks/SequentialTask.cpp b/launcher/tasks/SequentialTask.cpp
index 180430c8c..509d91cf7 100644
--- a/launcher/tasks/SequentialTask.cpp
+++ b/launcher/tasks/SequentialTask.cpp
@@ -43,7 +43,7 @@ SequentialTask::SequentialTask(QObject* parent, QString task_name) : ConcurrentT
 void SequentialTask::subTaskFailed(Task::Ptr task, const QString& msg)
 {
     emitFailed(msg);
-    qWarning() << m_failed.constBegin()->get()->failReason();
+    qWarning() << msg;
     ConcurrentTask::subTaskFailed(task, msg);
 }