1 files changed, 6 insertions, 0 deletions
diff --git a/src/corelib/io/qprocess_win.cpp b/src/corelib/io/qprocess_win.cpp
index dc8c50127d..0088284d2d 100644
--- a/src/corelib/io/qprocess_win.cpp
+++ b/src/corelib/io/qprocess_win.cpp
@@ -869,6 +869,7 @@ bool QProcessPrivate::startDetached(qint64 *pid)
     static const DWORD errorElevationRequired = 740;
 
     if (!openChannelsForDetached()) {
+        // openChannel sets the error string
         closeChannel(&stdinChannel);
         closeChannel(&stdoutChannel);
         closeChannel(&stderrChannel);
@@ -913,6 +914,11 @@ bool QProcessPrivate::startDetached(qint64 *pid)
         success = startDetachedUacPrompt(program, arguments, nativeArguments,
                                          workingDirectory, pid);
     }
+    if (!success) {
+        if (pid)
+            *pid = -1;
+        setErrorAndEmit(QProcess::FailedToStart);
+    }
 
     closeChannel(&stdinChannel);
     closeChannel(&stdoutChannel);