Event ID - 427

Event Id427
SourceESENT
Description<process> (<number>) The database engine could not access the file called <full path>\<file name>.
Event InformationFollowing information from a newsgroup post may help you:

A: If the event description is " The database engine could not access the file called  C:\WINNT\Security\Database\secedit.sdb", following steps may resolve the issue.

First you have to rename the file named secedit.sdb (%SystemRoot%\winnt\security\database\secedit.sdb)  to some other name such as secedit.old.  Then rename the file named secedit.new to secedit.sdb and reboot the system.

B: I found a similar case where they followed 278316 and the problem would return after a couple of weeks. This customer had Write-through cache disabled but the IDE controller they were on did not honor it. Do you have Write-back cache disabled on your the controller? If your Drives support write-back cache you may have to turn this off with a jumper on each disk, even if you have turned it off on the controller.

324805 HOW TO: Manually Turn Disk Write Caching On or Off [url]http://support.microsoft.com/?id=324805[/url]

259716 HOW TO: Manually Enable/Disable Disk Write Caching [url]http://support.microsoft.com/?id=259716[/url]

In another case the Anti-virus scanning was causing the corruption. If you restore the database by following 278316 and configure the Anti-virus not to scan the database folder where secedit.sdb is located does the problem go away? If it does you should contact the vendor of the Antivirus application for a fix so you can continue to scan the entire machine.

Following MS articles will give more information about this event.
Reference LinksJetpack Fails with Error 1032

How to Use Jetpack.exe to Compact a WINS or DHCP Database

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