diff --git a/src/bin/hamcore/openvpn_sample.ovpn b/src/bin/hamcore/openvpn_sample.ovpn
index 5533fda3..fc2fd1d2 100644
--- a/src/bin/hamcore/openvpn_sample.ovpn
+++ b/src/bin/hamcore/openvpn_sample.ovpn
@@ -40,6 +40,10 @@
 
 push-peer-info
 
+#
+# workaround, see https://github.com/SoftEtherVPN/SoftEtherVPN/issues/1490
+#
+data-ciphers AES-128-CBC
 
 ###############################################################################
 # Specify the type of the layer of the VPN connection.