NAT failure

Summary

Network Address Translation (NAT) protocol encountered a configuration error.

Causes

The most common reasons for this error are:

• Internet Connection Sharing (ICS) has been enabled on a connection.Sample Event: IGMP could not join the multicast group %1on the local interface with IP address %2.The data is the error code.

• The protocol was unable to expand wildcard mapping(s).

• Sample Event#1: The Network Address Translator (NAT) was unable to update thelocal address-resolution table to respond to requests forIP address %1 and mask %2.Address-resolution may fail to operate for addresses in the given range.This error may indicate a problem with TCP/IP networking,or it may indicate lack of support for address-resolutionin the underlying network interface.The data is the error code.

• Sample Event#2: The Network Address Translator (NAT) was unable to request an operationof the kernel-mode translation module.This may indicate misconfiguration, insufficient resources, oran internal error.The data is the error code.

• Sample Event#3: The Network Address Translator (NAT) was unable to loadthe kernel-mode translation module.The data is the error code.

• Sample Event#4: The Internet Connection Sharing service could not start becauseanother process has taken control of the kernel-mode translation module.This may occur when the Connection Sharing component has been installedin the Routing and Remote Access Manager.If this is the case, please remove the Connection Sharing componentand restart the Internet Connection Sharing service.

• Sample Event#5: The Connection Sharing component could not start because another processhas taken control of the kernel-mode translation module.This may occur when Internet Connection Sharing has been enabledfor a connection.If this is the case, please disable Internet Connection Sharingfor the connection in the Network Connections folder and thenrestart Routing and Remote Access.

• Sample Event#6: The Network Address Translator (NAT) was unable to expand the wildcardmappings.This may indicate misconfiguration, insufficient resources, oran internal error.The data is the error code.

Resolutions

• Disable Internet Connection Sharing (ICS) in Network Connections folder and then start the Routing and Remote Access service.

• Verify the configuration on NAT.

• If the server is low on memory, take appropriate action to increase the available memory. See Help and Support Center for information on low memory.

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