Event 2020 errors are logged when files are abandoned on the Modified-No-Write list

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Files may be abandoned on the Modified-No-Write list on your Microsoft Windows 2000 Server-based computer. Also, the following event ID message may be logged in Event Viewer:

Event Type: Error
Event Source: Srv
Event Category: None
Event ID: 2020
Date: date
Time: time
User: N/A
Computer: server name
Description: The server was unable to allocate from the system paged pool because the pool was empty.

The files that are in memory are accounted for with paged pool allocations that are tagged with MMST. You can use the Poolmon.exe tool or another similar tool to view these tags.

Hotfix Information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, submit a request to Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.


Windows 2000 Service Pack 3.

Restart Requirement

You must restart your computer after you apply this hotfix.

Hotfix Replacement Information

This hotfix does not replace any other hotfixes.

File Information

The English version of this has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
   Date         Time   Version        Size       File name   ----------------------------------------------------------   10-Feb-2004  11:47  5.0.2195.6897     30,160  Mountmgr.sys   16-Apr-2004  10:54  5.0.2195.6925  1,700,672  Ntkrnlmp.exe   16-Apr-2004  10:55  5.0.2195.6925  1,700,416  Ntkrnlpa.exe   16-Apr-2004  10:55  5.0.2195.6925  1,722,048  Ntkrpamp.exe   16-Apr-2004  10:54  5.0.2195.6925  1,677,568  Ntoskrnl.exe
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
More information
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
816915 New file naming schema for Microsoft Windows software update packages
824684 Description of the standard terminology that is used to describe Microsoft software updates
The Modified-No-Write list is defined in chapter 7, pages 447 and 466 of the Inside Windows NT Third Edition book.

Article ID: 832791 - Last Review: 10/26/2013 10:27:00 - Revision: 4.0

Microsoft Windows 2000 Server, Microsoft Windows 2000 Professional Edition, Microsoft Windows 2000 Advanced Server

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