Facile and errorless communication is possible with Windows Live messenger. Easy installation of Windows Live messenger on your system is possible but some users may be able to witness a 1603 error. The 1603 error appears due to the installation being halted as a result of the anti-spyware program. You have to follow the below mentioned Windows Live technical support guidelines to resolve the issue and continue with the successful installation. Steps to follow Terminate any anti-spyware programs if they are currently active. If Windows defender is active, Right Click on the icon and choose the Shut down Microsoft Antispyware option. If there are other spyware programs running on your system, you have to terminate them also and for getting help on terminating the programs, you may view the manufacturer's documentation. If you are unable to find help with the documentation, you may ask your friends or any experts in handling computers for terminating the remaining spyware progra...