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I have signed up for office 365, I'm trying to edit the sharepoint site in browser.

I have created a simple master page and a content page and uploaded to the site.


<%@Master language="C#"%>
<%@ Register tagprefix="SharePoint" namespace="Microsoft.SharePoint.WebControls" assembly="Microsoft.SharePoint, Version=, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "">
<html xmlns="">
<head id="Head1" runat="server">
<SharePoint:RobotsMetaTag runat="server"></SharePoint:RobotsMetaTag>
    <form id="frmMain" runat="server">
    <asp:ContentPlaceHolder ID="cphMain" runat="server">


<%@ Page Language="C#" MasterPageFile="~site/_catalogs/masterpage/MasterPage.master" inherits="Microsoft.SharePoint.WebPartPages.WebPartPage, Microsoft.SharePoint, Version=, Culture=neutral, PublicKeyToken=71e9bce111e9429c" meta:progid="SharePoint.WebPartPage.Document" meta:webpartpageexpansion="full" %>

<%@ Register tagprefix="SharePoint" namespace="Microsoft.SharePoint.WebControls" assembly="Microsoft.SharePoint, Version=, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>

<asp:Content ID="content1" runat="server" ContentPlaceHolderID="cphMain">
My custom html

I get following error in browser:

Webpage error details User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET4.0C; .NET4.0E; .NET CLR 3.5.30729; .NET CLR 3.0.30729) Timestamp: Sun, 10 Jul 2011 05:34:53 UTC Message: 'null' is null or not an object Line: 2187 Char: 9 Code: 0 URI:

enter image description here

also the page displays only "please wait" enter image description here

share|improve this question

I think that your masterpage isn't complete, missing a lot of javascript references and a lot of contentplaceholders.

at and starter masterpages can be found. THey contain the minimum set of contentplaceholders, controls and javascripts that you need when developing your own masterpage.

edit: describes how to create a custom solution to deploy your custom masterpage. It's a sandboxes solution, so it should fit in office365

share|improve this answer
I tried the starter masterpages but still I get the same message in browser, I am new to sharepoint I just need a page with master page which will be editable through browser. – Nitin Sawant Jul 11 '11 at 5:53
what about styling the existing masterpage using SharePoint Designer 2010? I believe it's a free tool. – Bas Lijten Jul 11 '11 at 16:45
Yea, it works with the SharePoint Designer 2010 but the user wants the functionality to edit the page on the fly – Nitin Sawant Jul 12 '11 at 4:10
It is possible to edit web page from browser, right? I think I am missing something in the master pages... – Nitin Sawant Jul 12 '11 at 4:58
I think you mean pagelayouts and publishing pages? This makes it possible to edit the content in browser, NOT style , NOT layout. – Ruben Herman Jul 12 '11 at 10:38

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