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I'm looking at the best method for changing the Access Denied (and possibly other error message screens) &nbsp;for SharePoint 2010. <br />
I've done some reading up and many have talked about changing the _layout/AccessDenied.aspx however being a novice at SharePoint I am unable to locate such file, furthermore many have mentioned its not recommended to change this file. I am wondering then whether its possible to insert maybe JavaScript to catch the error and redirect it to my custom page.<br />
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Here is the issue I am having it shows a iframe that is on an open page however the sharepoint calendar is locked down, but I dont want the access denied page to be shown to unauthorised users.<br />
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<a href="https://filedb.experts-exchange.com/incoming/2012/05_w21/577407/accessdenied.PNG" target="_blank" title="access denied (16 KB)"><img alt="access denied" class="file-block lazyload" style="max-width: 753px;" data-src="https://filedb.experts-exchange.com/incoming/2012/05_w21/577407/accessdenied.PNG" /></a><br />
Any help will be great :)
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accessdenied.PNG

I'm looking at the best method for changing the Access Denied (and possibly other error message screens)  for SharePoint 2010. 
I've done some reading up and many have talked about changing the _layout/AccessDenied.aspx however being a novice at SharePoint I am unable to locate such file, furthermore many have mentioned its not recommended to change this file. I am wondering then whether its possible to insert maybe JavaScript to catch the error and redirect it to my custom page.

Here is the issue I am having it shows a iframe that is on an open page however the sharepoint calendar is locked down, but I dont want the access denied page to be shown to unauthorised users.



Any help will be great :)

Changing SharePoint 2010 Access Denied Page

Microsoft Sharepoint is a software platform and family of software products used for collaboration and web publishing combined. These capabilities include developing web sites, portals, intranets, content management systems, search engines, wikis, blogs, and other tools for business intelligence and collaboration. SharePoint has a Microsoft Office-like interface, and it is closely integrated with the Office suite.

Microsoft SharePoint

JavaScript is a dynamic, object-based language commonly used for client-side scripting in web browsers. Recently, server side JavaScript frameworks have also emerged. JavaScript runs on nearly every operating system and  in almost every mainstream web browser.

JavaScript

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