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I have a problem with People Picker in my claim based app:

  • From People Picker finds many instance of the same user
  • From Code EnsureUser(Domain\Name) doesn't work at all
  • From Code EnsureUser(email) works sometimes..

I've read online that I must write down a new people picker but online I find only examples which adds claims to customize people picker and not to modify it to work as expected..

Does anyone has some suggestion about a people picker to install on my farm which works with Login names like Windows Auth?

Another problem in claim based:

Web.CurrentUser IS NULL!

Any suggestion to get current user? I tried with


but I obtain only a code like S-1-5-17

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