Thursday, August 11, 2016

SharePoint 2013 Web site Keep on Prompting for credentials

There are many reasons to happen this but most of the time it will happen when you change the Access mapping to match your domain.

For an example you might have webwfe01 as your web application in your default zone. And if you change that to www.sampleweb.com this may be occurred for Windows Users.

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This is because by not having Fully Qualified Domain name specified is not matching with the local machine.

For an Example,

Your local machine can be in a domain myorg.com and the specified Mapping is sampleweb.com

Thus this will cause LoopBack check which it true by design for security reasons.

Microsoft specifies two methods to resolve the issue.

  1. Disable Strict Name Checking [Ref]

  2. Disable Loopback Check [Ref]

REF: https://support.microsoft.com/en-us/help/896861/you-receive-error-401.1-when-you-browse-a-web-site-that-uses-integrated-authentication-and-is-hosted-on-iis-5.1-or-a-later-version

You need to do it all SharePoint servers for safe side in the future service deployment. But it is necessary for all Front End servers.

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