I am trying to implement a custom membership provider for forms based authentication under SharePoint foundation 2010.
In WSS3.0 everything works as expected but in SP2010 I find that whilst the Initialize method of my custom class is called ValidateUser is not??! I do get an error in the event log "An exception occurred when trying to issue security token. The security
token username and password could not be validated". This is accompanied by an ASP.NET information log "Event code: 4006 Event message: Membership credential verification failed"
Is there some change associated with "Claims authentication" that requires a different base class for this purpose now?
Andrew Wiles - www.it-workplace.com - MDX made simple
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