diff --git a/src/java/davmail/exchange/ews/EWSMethod.java b/src/java/davmail/exchange/ews/EWSMethod.java
index 24b4788f..d5e167a6 100644
--- a/src/java/davmail/exchange/ews/EWSMethod.java
+++ b/src/java/davmail/exchange/ews/EWSMethod.java
@@ -43,6 +43,7 @@ import java.util.zip.GZIPInputStream;
 /**
  * EWS SOAP method.
  */
+@SuppressWarnings("Since15")
 public abstract class EWSMethod extends PostMethod {
     protected static final Logger LOGGER = Logger.getLogger(EWSMethod.class);
 
@@ -83,6 +84,7 @@ public abstract class EWSMethod extends PostMethod {
     protected SearchExpression searchExpression;
 
     protected String serverVersion;
+    protected String timezoneContext;
 
     /**
      * Build EWS method
@@ -320,11 +322,18 @@ public abstract class EWSMethod extends PostMethod {
                     "xmlns:t=\"http://schemas.microsoft.com/exchange/services/2006/types\" " +
                     "xmlns:m=\"http://schemas.microsoft.com/exchange/services/2006/messages\">" +
                     "");
+            writer.write("<soap:Header>");
             if (serverVersion != null) {
-                writer.write("<soap:Header><t:RequestServerVersion Version=\"");
+                writer.write("<t:RequestServerVersion Version=\"");
                 writer.write(serverVersion);
-                writer.write("\"/></soap:Header>");
+                writer.write("\"/>");
             }
+            if (timezoneContext != null) {
+                writer.write("<t:TimeZoneContext><t:TimeZoneDefinition Id=\"");
+                writer.write(timezoneContext);
+                writer.write("\"/></t:TimeZoneContext>");
+            }
+            writer.write("</soap:Header>");
 
             writer.write("<soap:Body>");
             writer.write("<m:");
@@ -426,6 +435,15 @@ public abstract class EWSMethod extends PostMethod {
         this.serverVersion = serverVersion;
     }
 
+    /**
+     * Set Exchange timezone context
+     *
+     * @param timezoneContext user timezone context
+     */
+    public void setTimezoneContext(String timezoneContext) {
+        this.timezoneContext = timezoneContext;
+    }
+
     /**
      * Meeting attendee object
      */
diff --git a/src/java/davmail/exchange/ews/EwsExchangeSession.java b/src/java/davmail/exchange/ews/EwsExchangeSession.java
index c1958335..364259f2 100644
--- a/src/java/davmail/exchange/ews/EwsExchangeSession.java
+++ b/src/java/davmail/exchange/ews/EwsExchangeSession.java
@@ -1424,6 +1424,10 @@ public class EwsExchangeSession extends ExchangeSession {
 
                 newItem.setFieldUpdates(updates);
                 createOrUpdateItemMethod = new CreateItemMethod(MessageDisposition.SaveOnly, SendMeetingInvitations.SendToNone, getFolderId(folderPath), newItem);
+                // force context Timezone on Exchange 2010
+                if ("Exchange2010_SP1".equals(serverVersion) || "Exchange2010".equals(serverVersion)) {
+                    createOrUpdateItemMethod.setTimezoneContext(EwsExchangeSession.this.getVTimezone().getPropertyValue("TZID"));
+                }
                 //}
             }
             executeMethod(createOrUpdateItemMethod);