Additional steps after authentication

I have an application using forms authentication with the following
requirement. After user logs in the application needs to to perform some
checks. If all checks are satisfied user is redirected to the original
page she requested. If one or more checks fail user is redirected to other
page to make some changes. After that checks are performed again until all
of the ckecks are satisfied and user is redirected to the original page.
What is the best way to accompish something like this?

Thank you,
Alex

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