Issue
Sometimes tons of spammers registered on your DNN (DotNetNuke) website. It used lots of bandwidth and also slows down your website dramatically. Please follow those two solutions to prevent it.
Solution 1: Through DNN Website
> Please login DNN with the host or admin account
> Please Navigate to Admin -> Site Settings > Advanced Settings
- Change DNN User Registration
> Change the User Registration to None or Private.
Solution 2: Through DNN Database
> Sometimes you may do not know the DNN host or admin password; therefore, you can change the backend SQL Server database directly.
> please open the Portals table.
- Please change DNN User Registration in SQL Server Database
> Please change the UserRegistration field to 0 or 1
- 0: none
- 1: Private
- 2: Public
- 3: Verified
> Re-start the DNN website to clear the cache.
