微软对此有一个知识库文章:
http://support.microsoft.com/kb/951608
具体来说,XP没有启用正确的凭据提供程序来允许它。NLA在XP-Sp3上运行之前,需要打开此凭据提供程序CredSSP。链接的文章带有“为我修复”按钮,或者,如果您希望手动完成此操作,则需要输入几个注册表设置。重新启动才能生效。
1. Click Start, click Run, type regedit, and then press ENTER.
2. In the navigation pane, locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa
3. In the details pane, right-click Security Packages, and then click Modify.
4. In the Value data box, type tspkg. Leave any data that is specific to other
SSPs, and then click OK.
5. In the navigation pane, locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders
6. In the details pane, right-click SecurityProviders, and then click Modify.
7. In the Value data box, type credssp.dll. Leave any data that is specific to
other SSPs, and then click OK.
8. Exit Registry Editor.
9. Restart the computer.