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9.6

Intermittent 'The IPSec driver has entered Block mode' (Event ID 4292) errors on boot - then no IP communication with the server.

Asked by chris_shaw in Windows 2003 Server, SBS Small Business Server

Tags: IPSec, Block mode, 4292

I now have 2 SBS 2003 servers which INTERMITTENTLY cannot be contacted after booting.  The cause is this error:
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.

The solution is to reboot the server (without disabling services as suggested above), which will usually start OK the next time.  My problem is that I remote control these servers, so if this happens I need someone to intervene manually to sort the problem - not much good over a weekend if no-one is around.

I have searched for a solution - KB930220 does NOT apply here.  Because it is intermittent I think it may be something to do with timing, but I have not found a cause yet.

Any ideas? Chris.
[+][-]09/02/08 06:33 AM, ID: 22367103Accepted Solution

Your question has an Asker Certified™ answer! chris_shaw verified that this solution worked for them--which means it will likely work for you, too. Click to view the solution free for 30-days now.

About this solution

Zones: Windows 2003 Server, SBS Small Business Server
Tags: IPSec, Block mode, 4292
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Solution Provided By: chavousc
Participating Experts: 8
Solution Grade: A
 
[+][-]08/26/08 03:47 AM, ID: 22313145Expert Comment

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