FIX: A user account is unexpectedly locked out when you provide an invalid password at a task scheduler authentication prompt

Symptoms

Consider the following scenario:
  • You have an enterprise that has a user account lockout threshold policy applied.
  • You create a new task in Task Scheduler. When you create the task, you select the Run whether user is logged on or not option, click to clear the Do not store password. The task will only have access to local computer resources check box, and then click OK to apply the settings.
  • You are prompted to provide the credentials of the user in whose context the task should run.
  • You provide an invalid password several times at the task scheduler authentication prompt.

In this scenario, the user account is unexpectedly locked out.

Note This problem may occur even though the lockout threshold is not reached. This problem may also occur after you update the user account of an existing task.

This problem is related to the problem that is described in the following article in the Microsoft Knowledge Base:

2548120 Account is incorrectly locked after you create or change multiple scheduled tasks in Windows 7, in Windows Server 2008 R2, in Windows Vista, or in Windows Server 2008

Note If you do not have update 2548120 installed, the account can be unexpectedly locked out in even fewer attempts to provide an invalid password.

Cause

very time that you provide an incorrect password for the single task scheduler authentication, the badPwdCount attribute is incremented incorrectly two times (or four times, if update 2548120 is not installed).

Resolution

To resolve this problem, apply the hotfix that is described in that article after you apply update 2548120 .

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 the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

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, contact 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, go to the following Microsoft website: 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.

Prerequisites

To apply this hotfix, you must have Service Pack 2 for Windows Server 2008 installed.

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any previously released hotfix.

File information

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

References

See the terminology Microsoft uses to describe software updates.

Additional file information

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Свойства

Номер статьи: 2884927 — последний просмотр: 13 нояб. 2013 г. — редакция: 1

Windows Server 2008 Datacenter, Windows Server 2008 Enterprise, Windows Server 2008 Standard, Windows Server 2008 R2 Datacenter, Windows Server 2008 R2 Enterprise, Windows Server 2008 R2 Standard

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