diff --git a/src/java/davmail/exchange/ExchangeSessionFactory.java b/src/java/davmail/exchange/ExchangeSessionFactory.java
index df9f9a44..c7f04835 100644
--- a/src/java/davmail/exchange/ExchangeSessionFactory.java
+++ b/src/java/davmail/exchange/ExchangeSessionFactory.java
@@ -26,7 +26,6 @@ import davmail.exception.WebdavNotAvailableException;
 import davmail.exchange.dav.DavExchangeSession;
 import davmail.exchange.ews.EwsExchangeSession;
 import davmail.http.DavGatewayHttpClientFacade;
-import davmail.ui.tray.DavGatewayTray;
 import org.apache.commons.httpclient.HttpClient;
 import org.apache.commons.httpclient.HttpStatus;
 import org.apache.commons.httpclient.methods.GetMethod;
@@ -150,7 +149,7 @@ public final class ExchangeSessionFactory {
                             ExchangeSession.LOGGER.debug(e.getMessage() + ", retry with EWS");
                             session = new EwsExchangeSession(poolKey.url, poolKey.userName, poolKey.password);
                         } else {
-                            DavGatewayTray.warn(new BundleMessage("LOG_WEBDAV_NOT_AVAILABLE"));
+                            throw e;
                         }
                     }
                 }