![]() ![]() ![]() NPS event log entries contain information about the connection attempt, including the name of the connection request policy that matched the connection attempt and the network policy that accepted or rejected the connection attempt. Viewing NPS authentication status events in the Windows Security event log is one of the most useful troubleshooting methods to obtain information about failed authentications. See Advanced troubleshooting 802.1X authentication data collection. The workflow covers Windows 7 through Windows 10 (and Windows 11) for clients, and Windows Server 2008 R2 through Windows Server 2012 R2 for NPS. This troubleshooting technique applies to any scenario in which wireless or wired connections with 802.1X authentication are attempted and then fail to establish. We don't make access points or switches, so it's not an end-to-end Microsoft solution. Most of the time, we have to identify where the problem is, and another vendor has to fix it. ![]() It involves many third-party devices and software. While troubleshooting 802.1X and wireless, it's important to know how the flow of authentication works, and then figure out where it's breaking. This article includes general troubleshooting for 802.1X wireless and wired clients. Try our Virtual Agent - It can help you quickly identify and fix common Wireless technology issues. ![]()
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