Error.message property

Gets a detailed description of the error.

Hosts: Access, Excel, Outlook, PowerPoint, Project, Word
Last changed in Selection 1.1
var errMessage = asyncResult.error.message;

Return Value

The description of the error as a string.


The Error object and its properties are accessed from the AsyncResult object that is returned in the function passed as the callback argument of an asynchronous data operation.


To cause an error to be thrown, select a table or a matrix, and then call the setText function.

function setText() {
    Office.context.document.setSelectedDataAsync("Hello World!",
        function (asyncResult) {
            if (asyncResult.status === "failed")
                var error = asyncResult.error;
            write( + ": " + error.message);

// Function that writes to a div with id='message' on the page.
function write(message){
    document.getElementById('message').innerText += message; 

Support details

A capital Y in the following matrix indicates that this method is supported in the corresponding Office host application. An empty cell indicates that the Office host application doesn't support this method.

For more information about Office host application and server requirements, see Requirements for running Office Add-ins.

Office for Windows desktop Office Online (in browser) Office for iPad OWA for Devices Outlook for Mac
Access Y
Excel Y Y Y
Outlook Y Y Y Y
PowerPoint Y Y Y
Project Y
Word Y Y Y
Minimum permission level Restricted
Add-in types Content, task pane, Outlook
Library Office.js
Namespace Office

Support history

Version Changes
1.1 Added support for PowerPoint Online.
1.1 Added support for Excel, PowerPoint, and Word in Office for iPad.
1.1 Added support for content add-ins for Access.
1.0 Introduced