Error message when a domain user tries to change the password of a client computer that is running the German version of Windows Vista: Status: C000006C/C000006C

Error message when a domain user tries to change the password of a client computer that is running the German version of Windows Vista: Status: C000006C/C000006C

Article ID : 936460
Last Review : September 11, 2007
Revision : 2.1
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Consider the following scenario. On a domain controller, you configure some password policy settings. For example, you configure the Minimum password age password policy or the Password must meet complexity requirements password policy. However, when a domain user tries to change the password of a Windows Vista-based client computer in the domain, the user may receive the following error message:

Status: C000006C/C000006C

This error message contains only the status code. Therefore, the user does not know the meaning of the error message.

This problem occurs if the following conditions are true:

• The user does not meet some password policy requirements when the user changes the password.
• The client computer is running the German version of Windows Vista.

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This problem occurs because of an error in the Authui.dll file. Currently, Windows Vista allocates a buffer of only 256 characters for an error message. If an error message is longer than 256 characters, Windows Vista resets the buffer by using the status code only.

The German version of this error message is longer than 256 characters. Therefore, the user receives the error message that contains only the status code.

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Hotfix information

To resolve this problem, apply the following hotfix on the client computer that is running the German version of Windows Vista.A supported hotfix is now 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. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site: (

Note If additional issues occur or 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. To create a separate service request, visit the following Microsoft Web site: (


No prerequisites are required.

Restart requirement

You have to restart your computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other previously released hotfixes.

Registry information

To use one of the hotfixes in this package, you do not have to make any changes to the registry.

File information

The English version of this hotfix has the file attributes (or later file attributes) 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 item in Control Panel.

Windows Vista, x86-based versions
File name File version File size Date Time Platform
Update.mum Not applicable 2,008 26-Apr-2007 15:58 Not applicable
X86_afc0ea3989214a77de4de8072cfc378b_31bf3856ad364e35_6.0.6000.20586_none_c4add85e0b57fe36.manifest Not applicable 709 26-Apr-2007 15:58 Not applicable
X86_microsoft-windows-authentication-authui_31bf3856ad364e35_6.0.6000.20586_none_0a4659cc119a6e14.manifest Not applicable 59,358 26-Apr-2007 16:00 Not applicable
Authui.dll 6.0.6000.20586 1,984,512 26-Apr-2007 03:03 x86
Windows Vista, x64-based versions
File name File version File size Date Time Platform
Amd64_80c93bbf8c8995c186c3c6d21846afbf_31bf3856ad364e35_6.0.6000.20586_none_2dc90416d0a47dd4.manifest Not applicable 713 26-Apr-2007 15:58 Not applicable
Amd64_afc0ea3989214a77de4de8072cfc378b_31bf3856ad364e35_6.0.6000.20586_none_20cc73e1c3b56f6c.manifest Not applicable 711 26-Apr-2007 15:58 Not applicable
Amd64_microsoft-windows-authentication-authui_31bf3856ad364e35_6.0.6000.20586_none_6664f54fc9f7df4a.manifest Not applicable 59,416 26-Apr-2007 16:04 Not applicable
Package_1_for_kb936460~31bf3856ad364e35~amd64~~ Not applicable 1,800 26-Apr-2007 15:58 Not applicable
Package_2_for_kb936460~31bf3856ad364e35~amd64~~ Not applicable 2,019 26-Apr-2007 15:58 Not applicable
Update.mum Not applicable 1,909 26-Apr-2007 15:58 Not applicable
Authui.dll 6.0.6000.20586 2,270,720 26-Apr-2007 04:14 x64

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

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If a password change violates the password policy requirements in the English version of Windows Vista, the user may receive an error message that is more informative. This error message resembles the following:

Unable to update the password. The value provided for the new password does not meet the length, complexity, or history requirement of the domain.

The 0xc000006c status code represents the STATUS_PASSWORD_RESTRICTION status. This status indicates that the password change violates some password policy requirements. After you apply this hotfix on the Windows Vista-based client computer, the error message contains more information than only the status code. The information indicates that the user does not meet some password policy requirements when the user changes the password.

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How to configure the password policy settings

To configure the password policy settings on a domain controller, follow these steps:

1. Open the Active Directory Users and Computers snap-in.
2. Right-click the domain name in question, and then click Properties.

Note If the user is in a specific organizational unit, right-click the organizational unit, and then click Properties.

3. Click the Group Policy tab, click the Default Domain Policy Group Policy object (GPO), and then click Edit.
4. Expand Computer Configuration, expand Windows Settings, expand Security Settings, expand Account Policies, and then click Password Policy.
5. Configure the related password policy.

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 (/Feedback.aspx?kbNumber=824684/) Description of the standard terminology that is used to describe Microsoft software updates

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• Windows Vista Enterprise 64-bit Edition
• Windows Vista Ultimate 64-bit Edition
• Windows Vista Business
• Windows Vista Business 64-bit Edition
• Windows Vista Enterprise
• Windows Vista Ultimate

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kbfix kbqfe kbpubtypekc kbexpertiseadvanced kbhotfixserver KB936460

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Microsoft Knowledge Base Article

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