diff --git a/src/java/davmail/exchange/dav/DavExchangeSession.java b/src/java/davmail/exchange/dav/DavExchangeSession.java
index d324fd2c..27c07a86 100644
--- a/src/java/davmail/exchange/dav/DavExchangeSession.java
+++ b/src/java/davmail/exchange/dav/DavExchangeSession.java
@@ -1010,7 +1010,7 @@ public class DavExchangeSession extends ExchangeSession {
         FolderQueryTraversal mode = (!isPublic && recursive) ? FolderQueryTraversal.Deep : FolderQueryTraversal.Shallow;
         List<Folder> folders = new ArrayList<Folder>();
 
-        MultiStatusResponse[] responses = searchItems(folderPath, FOLDER_PROPERTIES, and(isTrue("isfolder"), condition), mode);
+        MultiStatusResponse[] responses = searchItems(folderPath, FOLDER_PROPERTIES, and(isTrue("isfolder"), isFalse("ishidden"), condition), mode);
 
         for (MultiStatusResponse response : responses) {
             Folder folder = buildFolder(response);
@@ -1135,7 +1135,7 @@ public class DavExchangeSession extends ExchangeSession {
     @Override
     public MessageList searchMessages(String folderPath, List<String> attributes, Condition condition) throws IOException {
         MessageList messages = new MessageList();
-        MultiStatusResponse[] responses = searchItems(folderPath, attributes, and(isFalse("isfolder"),condition), FolderQueryTraversal.Shallow);
+        MultiStatusResponse[] responses = searchItems(folderPath, attributes, and(isFalse("isfolder"), isFalse("ishidden"),condition), FolderQueryTraversal.Shallow);
 
         for (MultiStatusResponse response : responses) {
             Message message = buildMessage(response);
@@ -1152,7 +1152,7 @@ public class DavExchangeSession extends ExchangeSession {
     @Override
     protected List<ExchangeSession.Contact> searchContacts(String folderPath, List<String> attributes, Condition condition) throws IOException {
         List<ExchangeSession.Contact> contacts = new ArrayList<ExchangeSession.Contact>();
-        MultiStatusResponse[] responses = searchItems(folderPath, attributes, and(isFalse("isfolder"),condition), FolderQueryTraversal.Shallow);
+        MultiStatusResponse[] responses = searchItems(folderPath, attributes, and(isFalse("isfolder"), isFalse("ishidden"),condition), FolderQueryTraversal.Shallow);
         for (MultiStatusResponse response : responses) {
             contacts.add(new Contact(response));
         }
@@ -1162,7 +1162,7 @@ public class DavExchangeSession extends ExchangeSession {
     @Override
     protected List<ExchangeSession.Event> searchEvents(String folderPath, List<String> attributes, Condition condition) throws IOException {
         List<ExchangeSession.Event> events = new ArrayList<ExchangeSession.Event>();
-        MultiStatusResponse[] responses = searchItems(folderPath, attributes, and(isFalse("isfolder"),condition), FolderQueryTraversal.Shallow);
+        MultiStatusResponse[] responses = searchItems(folderPath, attributes, and(isFalse("isfolder"), isFalse("ishidden"),condition), FolderQueryTraversal.Shallow);
         for (MultiStatusResponse response : responses) {
             String instancetype = getPropertyIfExists(response.getProperties(HttpStatus.SC_OK), "instancetype");
             Event event = new Event(response);
@@ -1195,10 +1195,9 @@ public class DavExchangeSession extends ExchangeSession {
                 searchRequest.append(',').append(Field.getRequestPropertyString(field.getAlias()));
             }
         }
-        searchRequest.append(" FROM SCOPE('").append(folderQueryTraversal).append(" TRAVERSAL OF \"").append(folderUrl).append("\"')")
-                .append(" WHERE \"DAV:ishidden\" = False");
+        searchRequest.append(" FROM SCOPE('").append(folderQueryTraversal).append(" TRAVERSAL OF \"").append(folderUrl).append("\"')");
         if (condition != null) {
-            searchRequest.append(" AND ");
+            searchRequest.append(" WHERE ");
             condition.appendTo(searchRequest);
         }
         // TODO order by ImapUid
diff --git a/src/java/davmail/exchange/dav/Field.java b/src/java/davmail/exchange/dav/Field.java
index 01136f1d..2d92bb75 100644
--- a/src/java/davmail/exchange/dav/Field.java
+++ b/src/java/davmail/exchange/dav/Field.java
@@ -225,6 +225,13 @@ public class Field {
         createField(URN_SCHEMAS_HTTPMAIL, "textdescription"); // PR_BODY 0x1000 String
         createField("im", DistinguishedPropertySetType.Address, 0x8062, "im"); // InstantMessagingAddress DistinguishedPropertySetType.Address/0x00008062/String
 
+        // OWA settings
+        createField("messageclass", 0x001a, PropertyType.String);
+        createField("roamingxmlstream", 0x7c08, PropertyType.Binary);
+        createField("roamingdictionary", 0x7c07, PropertyType.Binary);
+
+
+        createField(DAV, "ishidden");
     }
 
     protected static void createField(String alias, int propertyTag, PropertyType propertyType) {
@@ -316,10 +323,10 @@ public class Field {
     }
 
     /**
-     * Get Mime header fieks.
+     * Get Mime header field.
      *
-     * @param alias field alias
-     * @return field
+     * @param headerName header name
+     * @return field object
      */
     public static Field getHeader(String headerName) {
         return new Field(SCHEMAS_MAPI_STRING_INTERNET_HEADERS, headerName);