重装了XP，安装PG，登陆不上,输入账号密码就登陆不进去。
显示问题如下：
Server Error in '/' Application.
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The remote server returned an error: (401) Unauthorized.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Net.WebException: The remote server returned an error: (401) Unauthorized.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[WebException: The remote server returned an error: (401) Unauthorized.]
System.Net.HttpWebRequest.GetResponse() +1501883
PageAdmin.master_login.xd9dc40336cb754b6() +1593
PageAdmin.master_login.x0c10d87f1cc88e3b() +216
PageAdmin.master_login.x303150620dddbc01() +111
PageAdmin.master_login.x4b531208dfadf445() +66
PageAdmin.master_login.xb99c27096be25a53() +38
PageAdmin.master_login.Page_Load(Object src, EventArgs e) +277
System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +13
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +45
System.Web.UI.Control.OnLoad(EventArgs e) +98
System.Web.UI.Control.LoadRecursive() +71
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4313
