Event ID 3 — File Screening Minifilter Driver Integrity

Updated: January 27, 2011

Applies To: Windows Server 2008

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For file screening enforcement to work, the file screening minifilter driver must be working properly, and it must be correctly attached to the volume. If the file screening minifilter driver is experiencing problems or is not correctly attached to the volume, users will be able to save unauthorized files.

Event Details

Product: Windows Operating System
ID: 3
Source: datascrn
Version: 6.0
Symbolic Name: DATA_SCREEN_MSG_UNLOAD_MANUAL
Message: The screening minifilter driver was unloaded outside the context of a system shutdown. Most likely this occurred as a result of a manual driver shutdown (not recommended) or as part of a screening minifilter driver upgrade. While the driver is unloaded file screening enforcement and management will be unavailable on the system. If still unloaded, reload the minifilter using the filter manager command line tool as soon as possible.

Resolve

Reattach the file screening minifilter driver

You have to manually reattach the file screening minifilter driver to the volume.

To perform this procedure, you must have membership in Administrators, or you must have been delegated the appropriate authority.

To reattach the file screening minifilter driver to the volume:

  1. Open an elevated command prompt. Click Start, point to All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator.
  2. Type fltmc attach datascrn volume:, where volume is the drive letter of the volume, and then press ENTER. For example:

    fltmc attach datascrn c:

Verify

To verify that the file screening minifilter driver is working properly, you must verify that it is attached to the volume.

To perform this procedure, you must have membership in Administrators, or you must have been delegated the appropriate authority.

To verify that the file screening minifilter driver is attached to the volume:

  1. Open an elevated command prompt. Click Start, point to All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator.
  2. Type fltmc instances and press ENTER. The file screening minifilter driver is attached to the volume if there is a Datascrn instance listed for the volume.

Related Management Information

File Screening Minifilter Driver Integrity

File Services

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