just we have small problem with DNN portals. we have two DNN websites one DNN 5 and 7.5 we need to make users of DNN5 able to login to DNN7 with same username and password.can we do this scenario in DNN?
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This isn't something that is easy to do with DNN, you'll need to setup a database task/service that keeps the users, user portals, roles, and ASPNET_ tables in sync across the two installs.
That, or you will need to write a custom authentication provider for both DNN 5 and DNN 7 that use an different database to store user information.

Chris Hammond
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1would they need to use the same machine id? – braindice Sep 10 '13 at 14:21
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If sync'ng the data across multiple databases, than yes, they would need to use the same machine keys in the web.config for encryption/decryption of the passwords – Chris Hammond Sep 10 '13 at 14:38
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is their are module to do the sync between dnn5 and dnn7? – Sep 10 '13 at 14:43
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I don't know of one that will sync across multiple installs – Chris Hammond Sep 10 '13 at 14:47
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I think this module could do the job http://store.dnnsoftware.com/home/product-details/dnn-login-with-sso-12
But you might want to contact them to make sure it works for your case.

Daniel Valadas
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