We started observing this behaviour from past couple of days. Even the AD Validation fails for the newly created users. So there are few users for whom the Active Directory authentication fails. We are not sure why it is happening. The code and configuration is not a problem since the same code works for other environment which has different domains. Has some one seen this kind of behaviour before. Infact we had a service to authenticate users so initial culprit was the service but now we have minimize the problem domain to AD. I created a simple application which JUST VALIDATES the user against the AD but still the same problem. I am getting very generic error which does not seem to help in debugging.
Any help will be highly appreciated.
Event Type: Information
Event Source: ASP.NET 2.0.50727.0
Event Category: Web Event
Event ID: 1315
Time: 3:35:42 PM
Event code: 4006
Event message: Membership credential verifi
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