DX Series Client Network connection fails. Error: Access to DVR failed!


  • The DX Series Client displays a red slash on server and will not connect. 
  • Client software cannot connect to the DX series Server.
  • Login account is currently logged on to the system.
  • Maximum number of Clients are connected.
  • DX Series Cleint "Access to DVR failed" prompt.


Product Line

Pelco Video Management


  • DX4100
  • DX4500/DX4600
  • DX4700/DX4800(HD)
  • DX8100
  • DX Series Client Software
  • DX4500/DX4600 Client


  • Physical network connection failure.
  • Application transmission is blocked.
  • IP address had changed at the Digital Video Recorder.
  • Windows permissons is insufficeint for the windows login account.
  • Ping the DX8100 server and reply is "Destination host unreachable"
  • There are too many concurrent network connections to the DVR.
  • Remove the dvr from the connection list, close the application and re-launched it. Add the dvr back to the connection list.


The access to server failure error means the software cannot connect to the DVR.

  • Ping the IP address and Telnet the IP address and port number of the Digital Video Recorder.
  • Verify the Physical Network connection. 
  • Verify IP address and network PORT number at the Digital Video Recorder.
  • Connect the DVR to another port on the network switch
  • Use a cross-over cable to connect the DVR directly with the client PC or LapTop.
  • Disable Antivirus Protection
  • Swap the network cable for good known cable
  • Reboot the DVR
  • Verify the account used is not logged in already.
  • Change the TCP/IP address on the DVR 


Related Articles:

The DX Series DVR displays various functionality issues.

Why do I get "Access to DVR server failed" connecting to a DX4700/4800 HVR Recorder.

How many concurrent users does the DX4500/DX4600/DX4700/DX4800 Series DVR/HVR support?

How many simultaneous remote connections can a single DX8000/DX8100 Series recorder accept?

Enable or disable the IPSec Policy on the DX8000/DX8100 Series Recorders