![]() When a network interface is disconnected-for example, when an Ethernet port is unplugged or Wi-Fi is turned off or not associated with an access point-no communication on that interface is possible, not even communication between your computer and itself. It is used mainly for diagnostics and troubleshooting, and to connect to servers running on the local machine. In the Value data box, type 1, and then click OK.The loopback device is a special, virtual network interface that your computer uses to communicate with itself. Right-click DisableLoopbackCheck, and then click Modify. Type DisableLoopbackCheck, and then press ENTER. Right-click Lsa, point to New, and then click DWORD Value. Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa To set the DisableLoopbackCheck registry entry to 1, follow these steps on the client computer: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa registry subkey to 1. Re-enable the behavior that exists in Windows Server 2003 by setting the DisableLoopbackCheck registry entry in the Method 2: Disable the authentication loopback check If the BackConnectionHostNames registry entry exists as a REG_DWORD type, you have to delete the BackConnectionHostNames registry entry.Įxit Registry Editor, and then restart the computer.Type each host name on a separate line.In the Value data box, type the CNAME or the DNS alias, that is used for the local shares on the computer, and then click OK. Right-click BackConnectionHostNames, and then click Modify. In the Name column, type BackConnectionHostNames, and then press ENTER. Right-click MSV1_0, point to New, and then click Multi-String Value. Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\MSV1_0 ![]() To do this, follow these steps for all the nodes on the client computer:Ĭlick Start, click Run, type regedit, and then click OK. Method 1 (recommended): Create the Local Security Authority host names that can be referenced in a NTLM authentication request Then use either of the following methods, as appropriate for your situation. To resolve this problem, set the DisableStrictNameChecking registry entry to 1. We do not recommend this workaround but are providing this information so that you can implement this workaround at your own discretion. ![]() This workaround may make your computer or your network more vulnerable to attack by malicious users or by malicious software such as viruses. Event ID 537 is logged in the Security event log.You receive a "No network provider accepted the given network path" error message.You receive an "Access denied" error message.In this scenario, you experience one of the following symptoms: After you do this, you experience authentication issues when you try to access a server locally by using its fully qualified domain name (FQDN) or its CNAME alias in the Universal Naming Convention (UNC) path: \\ servername\ sharename. You install Microsoft Windows Server 2003 Service Pack 1 (SP1) on a Windows Server 2003-based computer. If you implement this workaround, take any appropriate additional steps to help protect your system. Before you make these changes, we recommend that you evaluate the risks that are associated with implementing this workaround in your particular environment. You can make these changes to work around a specific problem. This article contains information that shows you how to help lower security settings or how to turn off security features on a computer. ![]()
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