Windows 2003 Loses Network Connections
Posted by: Michael Khanin
Networking, Microsoft Windows
If you have a server, with Windows 2003, one day you can find your server disconnected from network :).
It’s exactly what I get. Simple reboot and server lost network connectivity.
Event log full with system errors like:
Event iD: 12291, SAM failed to start the TCP/IP or SPX/IPX listening thread
Event iD: 4292, The IPSec driver has entered Block mode. IPSec will
discard all inbound and outbound TCP/IP network traffic that is not permitted
by boot-time IPSec Policy exemptions. User Action: To restore full unsecured
TCP/IP connectivity, disable the IPSec services, and then restart the
computer. For detailed troubleshooting information, review the events in the
Security event log.
Event iD: 7023, The IPSEC Services service terminated with the following
error: The endpoint mapper database entry could not be created.
When you check MS Knowledgbase for those errors you will find the following articles, the very popular is those:
http://support.microsoft.com/kb/930220
http://support.microsoft.com/kb/912023
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