# Installation is not working properly   > Please login with administrator authority.   > Please close personal firewall or security software.   > Check your computer whether there are viruses or evil codes. # "Not registered IT" is shown on the screen   > Please contact Security manager and confirm whether your ID is registered or not. # Cannot be registered as a Main-user   > Access the WaterWall Server(Remote Desktop).      Please check the Sever whether it is working properly.   > It can be shown if your license is exceeded.   > If server is busy, Progressing time would be delayed somehow.      In this case, please re-boot the WaterWall Server and try it again.   > If the PC has personal Firewall, it would occur because Firewall blocks the WaterWall port.      In this case, you need to stop installing first, delete or stop Firewall, then try again. * The things you need to know   # Waterwall security solution MUST be installed on drive C.   # After installation, if you set partition, the drive's data would be damaged.   # After installation, if you add a new HDD, you need to contact Security manager.       (Never change Primary to Secondary or vice versa neither Master and Slave.)       # Under the WW Client, if you change location of HDD both physically and logically,       it could damage HDD. Please contact Security Manager first.   # After Installation, if you need to move all resources due to changing your PC,       please contact Security Manager.