Overview
The 8x8 Network Utility simulates phone calls from your location to 8x8 data centers and gives specific measurements indicating network performance.
Click the appropriate version below to download and install the application on your computer. Work with your 8x8 Support representative to review and interpret the results.
For assistance on how to use the tool, see How to Use the 8x8 Network Utility Tool.
Note: You will need a product activation key to use the Network Utility. Create a case with 8x8 Technical Support for assistance.
Ensure that UDP 3478-3480 is allowed out of your network, these ports are listed in the Optional portion of the X Series Technical Requirements document.
The Network Utility provides a snapshot of network settings and diagnostic results. While the test is comprehensive some network settings that affect phone service may not be captured in the test. In the event of issues occurring that are likely related to network configuration, the firewall configuration may still need to be reviewed despite passing the Network Utility test.
See also How to Read the Network Utility Tool Results .
8x8 does not recommend or support the use of the Network Utility while connected to a client VPN. Attempting to run the Network Utility while connected to your client VPN will result in the inability to register the application or contact any of 8x8's servers.
What's New?
Latest Version: 2.3.1324
- NT-318: [Mac] Install handler to catch SIGTERM signal and gracefully shut down the CLI process.
- NT-321: [Mac] dns_parse_packet() fails on Mac OSX 15.4 - Key Registration issues
Documentation
Windows Downloads
Installer
Requires the user to have file installation privileges on the computer the file is being downloaded and run on.
Download the 8x8 Network Utility v 2.3.1324 - Installer Version for WindowsNo-Install
Includes a Standalone Utility, intended for testing network performance on smaller networks, and a Command-Line Utility, intended for users who want to run a diagnostic test in the background. Any user is able to install and run this software on their Windows system without additional privileges.
Packages include a zipped file:
- Command Line: 8x8NetUtil.exe
macOS Downloads
Installer
Requires the user to have file installation privileges on the computer the file is being downloaded and run on.
With some versions of macOS you will get the following pop-up when installing the application "8x8 Network Utility can't open because the identity of the developer cannot be confirmed." This is because this needs to be manually allowed in the security and privacy settings, which can be seen from the image below.
No-Install
Intended for users who want to run a diagnostic test in the background using the macOS Network Utility Command-Line. Any user is able to install and run this software on their macOS system without additional privileges.
Note: By clicking to download any of the above, you acknowledge and accept the 8x8 Terms of Use and (where applicable) the 8x8 Beta Services Terms of Use.
Troubleshooting
Common install and startup error messages.
Network Error When Processing Key
This is caused when the application cannot communicate with 8x8 servers over TCP port 443 (HTTPS) please check your access rules, proxy server or if you are running a client VPN, please disable the VPN and restart the application.
Open a Program From Unidentified Developer on MacOS
Should you receive this error, see Open a Program From Unidentified Developer on MacOS.
Cannot Proceed Because of Missing MSVCP140.dll
Please install/reinstall Microsoft Visual C++ 2015 Redistribute. Select the appropriate file for your version of Windows (x64 for the 64-bit version of Windows, and x86 for the 32-bit version).
Media or Fragmentation Test with Err 1
See "Failed: Signaling problem with media relay server!" for a solution.
Failed: Signaling problem with media relay server!
This is generally caused by your Firewall or Endpoint Security software blocking UDP Ports 3478-3480. Allow UDP Traffic to 8x8 subnets for the port range of 3478-3480.
Bufferbloat test fails with Avg Latency of 0 ms
This is generally caused by your Firewall or Endpoint Security software blocking UDP Ports 3478-3480. Allow UDP Traffic to 8x8 subnets for the port range of 3478-3480.
Failed to determine NAT type
This is generally caused by your Firewall or Endpoint Security software blocking UDP Ports 3478-3480. Allow UDP Traffic to 8x8 subnets for the port range of 3478-3480.