How can I remove Enrollment Wizard from startup after deployment of the client?
Please see KB2014 if you are looking for a way to disable the client from adding itself to startup.
During deployment the client adds a Reg_SZ value called Netwrix Password Manager to the startup registry key.
In 32-bit OS the key is HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
In 64bit OS the key is HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run
To prevent the Enrollment wizard from running on startup you need to remove the value, or alternatively change its value to point to a non-existing executable.
The value can be removed or changed on several machines by means of Group Policy.