This can be cause by several setting errors. Here are a few settings that may have been configured and has caused you to not have access to your DVR system 1) Network --> Webcam Server --> General Make sure "Enable IP white list" NOT check. 2) Configure --> Password Setup --> Remote Authentication Setup Make sure "Use Remote Authentication" NOT check 3) Configure --> Password Setup Select the account with login problem and check camera (live) in remote view. 4) If you are using Vista on the server. Turn OFF User Account Control (Control Panel --> User Accounts) 5) If you are running the schedule on your system, please do the following steps. Schedule --> Schedule Edit Enable all cameras on remote view, then hit OK to apply. And Run Schedule Start again.