总结：修改SharePoint管理中心管理员密码后，新创建的站点拒绝访问

背景：

域用户作为管理中心的管理员，而域用户要定期更改密码，在创建新的Application时，出现Access Denied的问题。

After changing Domain user password, it is denied to access new application.

解决方案：

在注册表中添加：DisableLoopbackCheck

具体步骤：

Ive found this very handy.. recently, I was working on a server and we were trying to access the local SharePoint site http://127.0.0.1 or http://nameoflocalserver/pages/default.aspx and I was constantly prompted for the username and password. In SharePoint 2010, it can really annoy you by not accepting your username password credentials in the popup window.

Its a ‘feature’ on the server that you need to disable as a workaround.
Caution: Microsoft Best practices is out of scope in this article. Do your own research on this topic.

You would need to create a DWORD registry key in the registry called DisableLoopbackCheck and set it to 1.
Follow these steps:

Option 1: Add this registry entry by PowerShell

New-ItemProperty HKLM:\System\CurrentControlSet\Control\Lsa -Name "DisableLoopbackCheck" -value "1" -PropertyType dword

Option 2: Add this registry entry manually

Click Start, click Run, type regedit, and then click OK
In Registry Editor, locate the following registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa
Right-click Lsa, point to New, and then click DWORD Value. (In Win 2008, its DWORD 32bit)
Type DisableLoopbackCheck, and then press ENTER.
Right-click DisableLoopbackCheck, and then click Modify.
In the Value data box, type 1 and then click OK.
Quit Registry Editor.
You may need to restart your server.

For more information about this, click the following article number to view the article in the Microsoft Knowledge Base: 281308 (http://support.microsoft.com/kb/281308/ ) Connecting to SMB share on a Windows 2000-based computer or a Windows Server 2003-based computer may not work with an alias name.

来源：http://www.jeremytaylor.net/2010/05/24/sharepoint-disable-loopback-check-disableloopbackcheck-dword-in-registry/