What is disable loopback check? How does it affect SharePoint?

Asked By challamalli 10 points N/A Posted on - 05/31/2012

What is disable loopback check? How does it affect SharePoint?

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Answered By Heather marie 0 points N/A #157810

What is disable loopback check? How does it affect SharePoint?

Hi,

There are many reasons why you supposed to disable the Loop Back. Such of those causes are parts of SharePoint that won't run properly with the enable Loop Back Check.

Without disabling Loop Back Check it can cause destruction on a SharePoint, your SharePoint farm isn't going to work appropriately and your indexer won't be capable to creeps content. The aspect was brought in to avoid some rejection of service assaults.

Best regards,

Heather marie

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• Posted on - 09/11/2012
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Answered By Sharath Reddy 590495 points N/A #157811

What is disable loopback check? How does it affect SharePoint?

A loopback security check was introduced in Windows Server 2003 Service Pack 1 and it is also present in Windows Server 2008. The loopback security check feature prevents access to a web application using a fully qualified domain name [FQDN] if an attempt to access it takes place from a machine that hosts that application. A 401.1 Access Denied from the web server and a logon failure in the event log will occur.

This means that browsing a SharePoint Web Application that uses a fully qualified domain name from a WFE in the farm will result in 401.1. This is very annoying on a development box, or when testing locally, or in other SharePoint specific scenarios. Microsoft calls this a security feature. For more information about this, please do visit DisableLoopbackCheck and SharePoint.

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• Posted on - 08/17/2013
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