A Support Guide for Wireless Diagnostics and Troubleshooting. Published: May 3. On This Page. Introduction. Information Gathering.

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Symptom Diagnosis. Part 1: 8. 02. 1. Connectivity. Part 2: 8. X Authentication. Appendix A: Quick Reference Guide. Programa Para Hacker Redes Wifi Desde Iphone 8 here. Appendix B: Wireless Group Policy. References. Introduction.

This article is designed to be a support aid to help diagnose wireless connection and authentication issues. It is meant to provide an advanced level of wireless diagnostics procedures by analyzing tracing logs generated by wireless components in Microsoft. This article includes a quick reference, providing quick answers to common connection problems. This article assumes knowledge of IEEE 8. LAN networking including related technologies such as IEEE 8. X and Wi- Fi Protected Access (WPA. This article is not meant to be a detailed explanation of the inner workings of the Windows Wireless Zero Configuration service.

For basic knowledge of wireless networking, see the Windows Server 2. Wireless Networking Web site. Information Gathering. The first step to take for a wireless issue is to gather information that might be needed to perform a preliminary diagnosis, including the following: Windows operating system version, including the latest service pack installed and build number if applicable. Wireless connection details of the Windows wireless client including the type of authentication and encryption that is being used. Wireless network adapter details, including vendor, model, and driver version.

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Wireless access point (AP) information, including vendor, model, firmware version, and configuration details similar to Step 2. Wireless logs. Logging can be enabled through the netsh ras set tracing * en command. After enabling logging, you can either restart the computer or restart the Wireless Zero Configuration (for Windows XP) or Wireless Configuration (for Windows Server 2. The wireless logs are located in the systemroot\tracing folder.

The log files most useful for troubleshooting wireless issues are the following: Wzctrace. Used mostly for 8. This file is present only on computers running Windows XP Service Pack 2 (SP2) or Windows Server 2. Service Pack 1. Eapol. Used mostly for IEEE 8.

X authentication. Wzcdlg. log  Used for user interface changes, such as changes made through the View Available Networks or Choose a wireless network dialog boxes. Netman. log  Used for user interface changes. Netshell. log  Used for user interface changes. Along with any . old versions of these files Note the times when the issues occurred so you can locate the relevant sections of the log files. There are times when it is not necessary to have all this information, but when in doubt, it is better to have too much information than too little.

Symptom Diagnosis. For the times that an immediate or trivial solution is not apparent, symptomatic analysis is best used to determine where you should look next. Symptoms and Solutions. Table 1 lists common issues, causes, and likely solutions.

Table 1  Wireless connection issues and solutions. Symptom. Possible Causes. Things to Do. Inability to connect. Incorrect or incompatible wireless network configuration.

For example, shared key authentication is configured on the wireless AP and the wireless client is attempting open system authentication. Inadvertent media access control (MAC) address filtering. The wireless network name is not visible. The wireless AP and wireless network adapter are not using the same 8. AP)Radio frequency (RF) interference from nearby devices such as cordless phone and Bluetooth devices. Wireless client is at the periphery of the RF range of the wireless APImproperly functioning or outdated wireless network adapter driver.

Verify that the wireless network configurations between the wireless client and wireless AP are compatible. Verify the wireless network environment and network topology.

Double- check your configuration steps. User error is a common source of incorrect configuration. Obtain and install the most recent version of the wireless network adapter driver. Enable logging and look at the Wzctrace. Intermittent connectivity.

IEEE 8. 02. 1. X authentication is enabled on the wireless client and is not enabled on the wireless APImproperly functioning or outdated wireless network adapter driver. Improperly functioning wireless APThe symptom of this issue is when the wireless client loses connectivity every 3 minutes or so.

If you only have logs to do troubleshooting, the Eapol. EAPOL component running through various authentication states. Obtain and install the most recent version of the wireless network adapter driver. Serial Numbers For Adobe Premiere Pro Cc Download. Look for unexpected disconnects in the Wzctrace. Incorrect, missing, or stale visible networks. Improperly functioning or outdated wireless network adapter driver.

Improperly functioning radio equipment on wireless AP or wireless network adapter. Look through the Wzctrace. Obtain and install the most recent version of the wireless network adapter driver. Run diagnostic functions on the wireless network adapter or wireless AP. Wireless client has associated but no there is no valid IP address configuration or no network connectivity. Authentication problem. Incorrect encryption key.

Bad or missing certificates. Improperly functioning wireless APVerify that the wireless network configurations between the wireless client and wireless AP are compatible. If you are using a static WEP key, verify that it has been correctly configured. Verify whether other computers connected to the wireless AP have the same problem.

If all wireless clients of the same wireless AP have the same problem, check the wireless AP settings. IEEE 8. 02. 1. X authentication might be failing. Look in the Eapol. Wireless connection problems when performing a suspend and resume with a laptop computer.

Improperly functioning or outdated wireless network adapter driver. Obtain and install the most recent version of the wireless network adapter driver. Look in the Wzctrace. Wireless Networks tab is not present for the properties of the wireless network adapter in the Network Connections folder or there are no visible wireless networks The Wireless Zero Configuration or Wireless Configuration services are not running.

Improperly functioning or outdated wireless network adapter driver. On a laptop computer, the wireless radio button might be in the off position. Check to see if the Wireless Zero Configuration or Wireless Configuration services are running with the sc query wzcsvc command. With the Services snap- in, ensure that the Wireless Zero Configuration or Wireless Configuration services are configured to start automatically. A wireless network adapter driver failing in early stages of service startup may result in the Wireless Zero Configuration or Wireless Configuration service not initializing over that interface.

Part 1: 8. 02. 1. Connectivity. The steps of diagnosing a wireless connection problem correspond to the two major phases of a wireless connection—an 8. X authentication. If the issue is 8.

Wzctrace. log file. If the issue is 8. X authentication, then most likely you will need to analyze the Eapol.

There might be times you will need to refer to both. Reading the Wzctrace. File. The method for reading the Wzctrace. With the Wzctrace. The general steps that should be taken when viewing the Wzctrace. Identify the time periods of interest to examine (for example, if you got disconnected at 1.

AM). If you have followed the basic information gathering process, you should know approximately what time the problems occurred. You should not start reading a log from beginning to end. Focus initial attention around these time periods of interest. Depending on the issue, decide on what key areas need to be examined.

Note: Do not try to read every line in the wireless log files sequentially as you will quickly get bogged down in many details that you will not understand.