Not able to edit the component in Experience manager

Question

I am not able to edit the component in Experience manager, but I can edit in CME.

Also I can edit the page. But when trying to edit the component it shows the following error:

Editing Disabled: Editing this content has been explicitly disabled for all user.to enable editing this content , contact your sdl Application Administrator.

And refreshing the page sometimes I get the following error message:

You are not authorized to edit this component: Your System Administrator has not granted you the rights to modify this component.

I am using the System administrator credential to edit this feature.

This is the sample mark up that has been generated from my code.

<div class="container marketing">
    <div class="row"> 
            <div class="span4">
               <!-- Start Component Presentation: {"ComponentID" : "tcm:2033-4796", "ComponentModified" : "2015-10-27T12:10:40", "ComponentTemplateID" : "tcm:2033-4740-32", "ComponentTemplateModified" : "2015-10-22T11:37:35", "IsRepositoryPublished" : true} -->
                <!-- Start Component Field: {"XPath":"tcm:Content/custom:Content/custom:header[1]"} -->                      <h2>Ohh God</h2> 
                <!-- Start Component Field: {"XPath":"tcm:Content/custom:Content/custom:description[1]"} -->                    <p>god help me</p>

            </div>
        </div>    
   </div>

This is my Razor view code:

@model DD4T.ContentModel.IComponentPresentation;
@using DD4T.XPM; @using DD4T.Mvc.Html;
<div class="container marketing">
    <div class="row">
        <div class="span4">              
            @Html.SiteEditComponentPresentation(Model)
            @if (Model.Component.Fields.ContainsKey("write"))
            {
                var field = Model.Component.Fields["write"];
                @Html.SiteEditField(Model.Component, field)
                  <h2>@field.Value.ToString()</h2> 
            }                
            @if (Model.Component.Fields.ContainsKey("reviewerName"))
            {
                var field = Model.Component.Fields["reviewerName"];
                @Html.SiteEditField(Model.Component, field)
                <p>@field.Value.ToString()</p>
            }                
        </div>
    </div>   

Answer 1

This does not look like valid Experience Manager Markup to me.

The <!-- Start Component Field --> HTML comments need to be within a separate block level element in order that XPM can display them properly, so I'd start by fixing that. I'd suggest placing them inside the <h2> and <p> tags, like this:

@model DD4T.ContentModel.IComponentPresentation;
@using DD4T.XPM; @using DD4T.Mvc.Html;
<div class="container marketing">
    <div class="row">
        <div class="span4">              
            @Html.SiteEditComponentPresentation(Model)
            @if (Model.Component.Fields.ContainsKey("write"))
            {
                var field = Model.Component.Fields["write"];
                <h2>
                    @Html.SiteEditField(Model.Component, field)
                    @field.Value.ToString()
                </h2> 
            }                
            @if (Model.Component.Fields.ContainsKey("reviewerName"))
            {
                var field = Model.Component.Fields["reviewerName"];
                <p>
                    @Html.SiteEditField(Model.Component, field)
                    @field.Value.ToString()
                </p>
            }                
        </div>
    </div>   

If that doesn't fully solve the issue, I'd check that the fields were configured as inline editable in the component's schema, like this:

Also check that the Component Template in use has inline editing enabled, like this:

Answer 2

Can you double-check your Blueprint Context Settings have been set appropriately as well? Take a look at this post as well: On an Experience Manager website the UI loads but the component is not editable

Also documented here: http://docs.sdl.com/LiveContent/content/en-US/SDL%20Tridion%20full%20documentation-v1/GUID-DB96F4C4-1B66-4D1D-AC29-623CE23DDE38