diff --git a/imixs-adapters-wopi/README.md b/imixs-adapters-wopi/README.md
index 2cf8547..836f83d 100644
--- a/imixs-adapters-wopi/README.md
+++ b/imixs-adapters-wopi/README.md
@@ -123,9 +123,8 @@ In this example we are calling the JavaScript method to open the viewer componen
 ## JavaScript
 
 The Imixs-WOPI Adapter provides a JavaScript library to open and control the Wopi Editor (Wopi Client).
-The Integration of the Wopi Client into your application is done by a iframe. This necessary to isolate the editor form your surrounding application. 
-To display the editor in a iframe the script library *imixs-wopi.js* provides a method imixsWopi.openViewer. The method expects a DIV element in your existing web page and the access URL to place the iframe with the editor. 
-
+The Integration of the Wopi Client into your application is done by a iframe. This is necessary to isolate the editor form your surrounding application. 
+To display the editor in a iframe the script library *imixs-wopi.js* provides a method `imixsWopi.openViewer`. The method expects a DIV element in your existing web page to place the iframe with the editor and the access URL to load the document. 
 
 
 	<script type="text/javascript" src="/js/imixs-core.js"></script>
@@ -143,7 +142,7 @@ To display the editor in a iframe the script library *imixs-wopi.js* provides a
 
 	....
 	...........
-	<!-- LibreOffice Editor -->
+	<!-- Office Editor -->
 	<div id="wopi_controlls">
 		<button onclick="imixsWopi.save(); return false;">Update</button><button onclick="imixsWopi.closeViewer(); return false;">Close</button>
 		<hr />
@@ -153,11 +152,11 @@ To display the editor in a iframe the script library *imixs-wopi.js* provides a
 
 ## UI Controls
 
-The control of closing the editor or saving the content is in this concept part of your application. So in the example above the application shows two buttons to save the content and to close the editor. 
+The control of closing the editor or saving the content in this concept is part of your application. So in the example above the application shows two buttons to save the content and to close the editor. 
 
 ## Updating the File Content by Callback method
 
-When a file was saved by LibreOffice Online, the data is posted to the WOPI Host endpoint '/wopi/files/{name}/contents'. The file content is not directly stored. It is cached into the local wopi file cache on the Wopi Host. An application can provide a saveCallback method to be triggered after a file was updated. 
+When a file was saved by the Office interface, the data is posted to the WOPI Host endpoint '/wopi/files/{name}/contents'. The file content is not directly stored. It is cached into the local wopi file cache on the Wopi Host. An application can provide a saveCallback method to be triggered after a file was updated. 
 
 	// define save callback when a file was updated....
 	imixsWopi.saveCallback = uiSaveCallback;
diff --git a/imixs-adapters-wopi/src/main/java/org/imixs/workflow/wopi/WopiAccessHandler.java b/imixs-adapters-wopi/src/main/java/org/imixs/workflow/wopi/WopiAccessHandler.java
index cbb1f77..4ac6a17 100644
--- a/imixs-adapters-wopi/src/main/java/org/imixs/workflow/wopi/WopiAccessHandler.java
+++ b/imixs-adapters-wopi/src/main/java/org/imixs/workflow/wopi/WopiAccessHandler.java
@@ -390,7 +390,7 @@ public String getClientEndpointByMimeType(String mimeType) {
      * @return
      */
     private String resolvePublicEndpoint(String uri) {
-        String result = null;
+        String result = uri;
         if (wopiPublicEndpoint != null && wopiPublicEndpoint.isPresent() && !wopiPublicEndpoint.get().isEmpty()) {
 
             try {
diff --git a/imixs-adapters-wopi/src/main/java/org/imixs/workflow/wopi/WopiController.java b/imixs-adapters-wopi/src/main/java/org/imixs/workflow/wopi/WopiController.java
index 5f1976a..6cbb653 100644
--- a/imixs-adapters-wopi/src/main/java/org/imixs/workflow/wopi/WopiController.java
+++ b/imixs-adapters-wopi/src/main/java/org/imixs/workflow/wopi/WopiController.java
@@ -161,6 +161,11 @@ public String getWopiAccessURL(String uniqueid, String file, String userid, Stri
             logger.warning("...no wopi client endpoint found!");
             return null;
         }
+        
+        // cut onlyoffice hints
+        if (baseURL.indexOf("&<rs=")>-1) {
+            baseURL=baseURL.substring(0,baseURL.indexOf("&<rs="));
+        }
 
         // test file extension
         String[] extensions = wopiFileExtensions.split(",");
@@ -185,11 +190,12 @@ public String getWopiAccessURL(String uniqueid, String file, String userid, Stri
         }
 
         String token = generateAccessToken(userid, username);
-        baseURL = baseURL + "WOPISrc=" + wopiHostEndpoint + uniqueid + "/files/" + file + "&access_token=" + token;
+        baseURL = baseURL + "WOPISrc=" + wopiHostEndpoint + uniqueid + "/files/" + file + "?access_token=" + token;
         if (baseURL.startsWith("http://")) {
             logger.fine("...WOPI Client is running without SSL - this is not recommended for production!");
         }
 
+        logger.info("WOP Access URL=" + baseURL);
         return baseURL;
     }
 
diff --git a/imixs-adapters-wopi/src/main/java/org/imixs/workflow/wopi/WopiHostService.java b/imixs-adapters-wopi/src/main/java/org/imixs/workflow/wopi/WopiHostService.java
index b031231..5fb7267 100644
--- a/imixs-adapters-wopi/src/main/java/org/imixs/workflow/wopi/WopiHostService.java
+++ b/imixs-adapters-wopi/src/main/java/org/imixs/workflow/wopi/WopiHostService.java
@@ -255,7 +255,7 @@ public Response getFileContents(@PathParam("uniqueid") String uniqueid, @PathPar
      * <p>
      * The method expects a $uniqueID and filename
      * <p>
-     * <code> /wopi/xxxxxxx-0000-0000-0000-yyyy/files/{FILENAME}</code>
+     * <code> /wopi/xxxxxxx-0000-0000-0000-yyyy/files/{FILENAME}/contents</code>
      * <p>
      * The method returns a json file info object
      * <p>
@@ -269,19 +269,18 @@ public Response getFileContents(@PathParam("uniqueid") String uniqueid, @PathPar
     public Response postFileContents(@PathParam("uniqueid") String uniqueid, @PathParam("file") String file,
             InputStream contentStream, @QueryParam("access_token") String accessToken, @Context UriInfo info) {
         
+        logger.info("...... POST postFileContents: " + uniqueid + "/" + file);
         // analyze header X-LOOL-WOPI-Timestamp, X-LOOL-WOPI-IsAutosave, X-LOOL-WOPI-IsExitSave
         // We do ignroe the X-LOOL-WOPI-IsExitSave event
         String wopiHeader=servletRequest.getHeader("X-LOOL-WOPI-IsExitSave");
         if (wopiHeader!=null && "true".equalsIgnoreCase(wopiHeader)) {
-            logger.fine("...ignroe X-LOOL-WOPI-IsExitSave = " + wopiHeader);
+            logger.info("...ignore X-LOOL-WOPI-IsExitSave = " + wopiHeader);
             return  Response.ok().build();
         }
         
-        logger.info("...updating file content...");
-        
         // clean unexpected query params
         accessToken = wopiAccessHandler.purgeAccessToken(accessToken);
-        logger.finest("...... POST postFileContents: " + uniqueid + "/" + file);
+        
 
         // validate access_token
         JsonObject acessTokenPayload = wopiAccessHandler.validateAccessToken(accessToken);