diff --git a/src/slic3r/GUI/DownloadProgressDialog.cpp b/src/slic3r/GUI/DownloadProgressDialog.cpp
index 7ded82037e..a67e34a3b3 100644
--- a/src/slic3r/GUI/DownloadProgressDialog.cpp
+++ b/src/slic3r/GUI/DownloadProgressDialog.cpp
@@ -40,7 +40,7 @@ DownloadProgressDialog::DownloadProgressDialog(wxString title)
     wxString install_failed_url = wxT("https://wiki.bambulab.com/en/software/bambu-studio/failed-to-get-network-plugin");
 
     wxString download_failed_msg = _L("Failed to download the plug-in. Please check your firewall settings and vpn software, check and retry.");
-    wxString install_failed_msg = _L("Failed to install the plug-in. Please check whether it is blocked or deleted by anti-virus software.");
+    wxString install_failed_msg = _L("Failed to install the plug-in. The plug-in file may be in use. Please restart OrcaSlicer and try again. Also check whether it is blocked or deleted by anti-virus software.");
 
     SetBackgroundColour(*wxWHITE);
     wxBoxSizer *m_sizer_main = new wxBoxSizer(wxVERTICAL);