If you receive this error in the error log of your project here is its description and solution.
Prerequisites: Your application must have custom login functionality based on Forms Authentication method implemented. Also built-in functionality for Roles, Users and Membership must be used.
Problem: The visible issue is that the user cannot login to the application and the following error appears in the Event Viewer (Start -> Control Panel -> Administrative Tool -> Event Viewer):
Error in Event Viewer:
Event code: 4006
Event message: Membership credential verification failed.
Event time: 28/08/2006 12:30:12
Event time (UTC): 28/08/2006 09:30:12
Event ID: 04b22a752da345baabe19236fb25675f
Event sequence: 2
Event occurrence: 1
Event detail code: 0
Here is the solution: The “ApplicationName” value in “aspnet_Applications” database table and the “applicationName” property value for all providers in web.config (Membership provider, Role provider, Profile provider etc.) must have the same value.