kc3-lang/sys_wait

diff --git a/appveyor.yml b/appveyor.yml
index 21cf72a..d155b48 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -22,3 +22,5 @@ environment:
 
 test_script:
     - python build.py
+on_finish:
+    - ps: $blockRdp = $true; iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))