Login failed for user ''是由于您说正在使用集成(Windows)身份验证而导致SQL Server无法读取NT登录令牌导致的错误. .net成员资格提供程序

Login failed for user '' is an error caused by no NT login token for SQL Server to read when you say you're using integrated (windows) authentication. It's nothing to with .net membership provider

因此，您拥有"Integrated Security=SSPI;"，但SQL无法读取它.这可能是由于:

So, you have "Integrated Security=SSPI;" but SQL can't read it. This can be caused by:

• 组策略(无网络登录权限)
• 从非Windows连接
• 防火墙等
• 同一登录更改中的最近密码更改(过期令牌)
• 等

在这种情况下，我想不出为什么将Web + SQL放在同一个盒子上.我以为在同一个盒子上没有令牌会很困难.我可以说出原因，但抱歉不知道如何解决.

In this case, I can't think why if Web + SQL are on the same box. I thought it would have been difficult to have no token on the same box. I can tell why why but don't know how to fix it sorry.

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