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LAN Analyzer and Protocol Decoder - CommView

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Introduction
About CommView
What's New
Using the Program
Overview
Selecting Network Interface for Monitoring
Latest IP Connections
Packets
Logging
Viewing Logs
Rules
Advanced Rules
Alarms
Reconstructing TCP Sessions
Reconstructing UDP Streams
Searching Packets
Statistics and Reports
Using Aliases
Packet Generator
Visual Packet Builder
NIC Vendor Identifier
Scheduler
Using Remote Agent
Using RPCAP
Capturing Loopback Traffic
Port Reference
Setting Options
Frequently Asked Questions
VoIP Analysis
Introduction
Working with VoIP Analyzer
SIP and H.323 Sessions
RTP Streams
Registrations
Endpoints
Errors
Call Logging
Reports
Call Playback
Viewing VoIP Logs
Working with Lists in VoIP Analyzer
NVF Files
Advanced Topics
Capturing High Volume Traffic
Working with Multiple Instances
Running CommView in Invisible Mode
Command Line Parameters
Exchanging Data with Your Application
Custom Decoding
CommView Log Files Format
Sales and Support

Failed to open the selected adapter

This error message is generated when the program is unable to start capturing packets passing through the selected adapter.

Possible reasons are:

· The network card installed on your computer is relatively old and doesn't support the NDIS 3.0 driver standard. You can try to download the latest driver version from the manufacturer's site.
· The selected adapter is not an Ethernet network card, e.g. it is an infrared port adapter. In this case, select a different adapter from the list.
· A software conflict or low system resources. Try to reboot and launch the program again.
· For cable modem users with DHCP server only: IP lease may have expired. Run IPCONFIG.EXE /release, and then IPCONFIG.EXE /renew. Try to open the adapter again.

If you believe that none of these reasons explains the error, please contact technical support. Don't forget to include information about your OS version, network card type, and any other details that you think may be relevant.