3 files changed, 18 insertions, 3 deletions
diff --git a/src/main.cpp b/src/main.cpp
index 75148c4b..e43ec6d0 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -472,12 +472,14 @@ int runApplication(MOApplication &application, SingleInstance &instance,
     qInfo().nospace().noquote()
       << "windows: " << env.windowsVersion().toString();
 
+    if (env.windowsVersion().compatibilityMode()) {
+      qWarning() << "MO seems to be running in compatibility mode";
+    }
+
     qInfo() << "modules loaded in process:";
     for (const auto& m : env.loadedModules()) {
       qInfo().nospace().noquote() << " . " << m.toString();
     }
-
-    return 0;
   }
 
   QString dataPath = application.property("dataPath").toString();
diff --git a/src/shared/util.cpp b/src/shared/util.cpp
index 9337ebf6..33094eff 100644
--- a/src/shared/util.cpp
+++ b/src/shared/util.cpp
@@ -653,6 +653,18 @@ WindowsVersion::WindowsVersion() :
   getElevated();
 }
 
+bool WindowsVersion::compatibilityMode() const
+{
+  if (m_realMajor == 0 && m_realMinor == 0 && m_realBuild == 0) {
+    return false;
+  }
+
+  return
+    m_realMajor != m_major ||
+    m_realMinor != m_minor ||
+    m_realBuild != m_build;
+}
+
 QString WindowsVersion::toString() const
 {
   QStringList sl;
@@ -665,7 +677,7 @@ QString WindowsVersion::toString() const
 
   sl.push_back("version: " + version);
 
-  if (m_realMajor != m_major || m_realMinor != m_minor || m_realBuild != m_build) {
+  if (compatibilityMode()) {
     sl.push_back("real version: " + realVersion);
   }
 
diff --git a/src/shared/util.h b/src/shared/util.h
index deaf6fcc..232a97bb 100644
--- a/src/shared/util.h
+++ b/src/shared/util.h
@@ -97,6 +97,7 @@ class WindowsVersion
 public:
   WindowsVersion();
 
+  bool compatibilityMode() const;
   QString toString() const;
 
 private: