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Loss of Network Connectivity on SBS2003 after a reboot (may be fixed by a further reboot)
Posted By Paul On 12/09/2008 @ 10:33 am In Server Tips | No Comments
If your SBS2003 server looses network connectivity after a reboot and you spot an event in your system event log such as …
The IPSec driver has entered Block mode. IPSec will discard all incoming and outgoing 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.
… then you should read the following guides which will help to prevent this from happening again.
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URL to article: http://managedsystemservices.co.uk/2008/09/12/loss-of-network-connectivity-on-sbs2003-after-a-reboot-may-be-fixed-by-a-further-reboot/
URLs in this post:
[1] http://support.microsoft.com/kb/956189: http://support.microsoft.com/kb/956189
[2] Technet - SBS Blog: http://blogs.technet.com/sbs/archive/2008/07/17/some-services-may-fail-to-start-
or-may-not-work-properly-after-installing-ms08-037-951746-and-951748.aspx
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