Many times when your employees leave or you want certain people to not login anymore, then you may wish to disable/block them. There are many ways of doing so in uKnowva:
1. Go to the user's profile and click Lock user (You need to be logged in with an admin account to do so)
2. Go to uKnowva Configuration --> User manager
3. Simply fire the below SQL query on your database
update #_users set block = 1 where username = '[[username]]'; #put the required user's username in place of [[username]]