Maintaining a WSS site is difficult, especially if you don’t follow the best practices for this. How about recreating user accounts in WSS? What happens when you delete a user from your WSS site and recreate a new user with the same name? Simple, you get an error message when trying to connect to a WSS site:

Access denied. You do not have permission to perform this action or access this resource. Access requests are not enabled.
Cannot complete this action.
Please try again.

Why Does This Happen?

Because when you create a new account, a new SSID is created. That SSID needs to linked back to the new-existing user account.

How Do I Fix This?

Frankly, its about as simple as deleting the user from the particular account and adding the user back to the same site collection. There are three different scenarios that are taken into account when adding a user back:

1. If the User Is a Member of the Users Group
2. If the User is Member of the Domain Administration Group and Is Site Owner
3. If you use Microsoft Office Project Server 2003 features that rely on Windows SharePoint Services

Click here to read the KB823278 titled You receive an “Access denied” or a “Cannot complete this action” error message when you try to connect to a Windows SharePoint Services Web site