C# 跨域ASP.Net的UserPrincipal.IsMemberOf（GroupPrincipal）

我期待着修改一个网站，以验证跨域，但它给出了以下错误时，运行和登录作为用户从其他域。您能否建议需要对ASP.Net应用程序池应用什么安全设置才能启用此功能

The user name or password is incorrect 

[DirectoryServicesCOMException (0x8007052e): The user name or password is incorrect.
]
   System.DirectoryServices.DirectoryEntry.Bind(Boolean throwIfFail) +596521
   System.DirectoryServices.DirectoryEntry.Bind() +44
   System.DirectoryServices.DirectoryEntry.RefreshCache(String[] propertyNames) +77
   System.DirectoryServices.AccountManagement.ADStoreCtx.LoadDomainInfo() +872
   System.DirectoryServices.AccountManagement.ADStoreCtx.get_UserSuppliedServerName() +129
   System.DirectoryServices.AccountManagement.ADStoreCtx.IsMemberOfInStore(GroupPrincipal g, Principal p) +976

[AuthenticationException: The user name or password is incorrect.
]
   System.DirectoryServices.AccountManagement.ADStoreCtx.IsMemberOfInStore(GroupPrincipal g, Principal p) +2103

正在运行的代码-仅显示与查询相关的对象

string Domain = userName.Split('\\')[0];

var pc = new PrincipalContext(ContextType.Domain, Domain);
var gpGeneral = GroupPrincipal.FindByIdentity(pc, "GroupName");

up.IsMemberOf(gpGeneral)