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You cannot log on to a Windows 7-based or Windows Server 2008 R2-based client computer after you disable AES encryption for Kerberos authentication


View products that this article applies to.

Symptoms

Consider the following scenario:
  • You have a client computer that is running Windows 7 or Windows Server 2008 R2 in an Active Directory domain.
  • You disable Advanced Encryption Standard (AES) encryption for Kerberos authentication on the domain environment. 
  • A domain user tries to log on to the domain work station.
In this scenario, the logon attempt fails.

Notes
  • This issue is resolved temporarily when you restart the client computer.
  • In some cases, a domain user cannot unlock a locked session or cannot log on to the locked session. Additionally, the user receives an error message that resembles the following: 
    The user name or password is incorrect.

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Resolution

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, visit 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 be running Windows 7 Service Pack 1 (SP1) or Windows Server 2008 R2 SP1.

For more information about how to obtain a Windows 7 or Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Registry information

To apply this hotfix, you do not have to make any changes to the registry.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The global version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.
Windows 7 and Windows Server 2008 R2 file information notes
Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.
  • The files that apply to a specific product, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:
    VersionProductMilestoneService branch
    6.1.760
    1.22xxx
    Windows 7 and Windows Server 2008 R2SP1LDR
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows 7 and for Windows Server 2008 R2" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintaining the state of the updated component. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.
For all supported x86-based versions of Windows 7
File nameFile versionFile sizeDateTime
Cryptdll.dll6.1.7601.2213058,36809-Oct-201217:29
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
File nameFile versionFile sizeDateTime
Cryptdll.dll6.1.7601.2213065,53609-Oct-201218:29
For all supported IA-64-based versions of Windows Server 2008 R2
File nameFile versionFile sizeDateTime
Cryptdll.dll6.1.7601.22130120,83209-Oct-201217:23

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Status

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

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More Information

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

824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional file information

Additional file information for Windows 7 and for Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7
File nameX86_592e1bb6f2ee0f22a6a01ea32053869f_31bf3856ad364e35_6.1.7601.22130_none_f5f7fe06ee487895.manifest
File versionNot applicable
File size700
Date (UTC)09-Oct-2012
Time (UTC)21:09
File nameX86_microsoft-windows-cryptdll-dll_31bf3856ad364e35_6.1.7601.22130_none_0815cb572539245e.manifest
File versionNot applicable
File size2,410
Date (UTC)09-Oct-2012
Time (UTC)18:02
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
File nameAmd64_2e972e2f859da65c793116850fce481f_31bf3856ad364e35_6.1.7601.22130_none_10c7d3e6d1e50756.manifest
File versionNot applicable
File size704
Date (UTC)09-Oct-2012
Time (UTC)21:09
File nameAmd64_592e1bb6f2ee0f22a6a01ea32053869f_31bf3856ad364e35_6.1.7601.22130_none_5216998aa6a5e9cb.manifest
File versionNot applicable
File size702
Date (UTC)09-Oct-2012
Time (UTC)21:09
File nameAmd64_eff61d1e5010173b0f55e11b03c86299_31bf3856ad364e35_6.1.7601.22130_none_3c8067684f6dd2d6.manifest
File versionNot applicable
File size1,048
Date (UTC)09-Oct-2012
Time (UTC)21:09
File nameAmd64_microsoft-windows-cryptdll-dll_31bf3856ad364e35_6.1.7601.22130_none_643466dadd969594.manifest
File versionNot applicable
File size2,412
Date (UTC)09-Oct-2012
Time (UTC)19:09
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
File nameIa64_9932b7e2559f88c0b6dda3e3f8356df0_31bf3856ad364e35_6.1.7601.22130_none_1f7694fe2380cadb.manifest
File versionNot applicable
File size1,046
Date (UTC)09-Oct-2012
Time (UTC)21:09
File nameIa64_microsoft-windows-cryptdll-dll_31bf3856ad364e35_6.1.7601.22130_none_08176f4d25372d5a.manifest
File versionNot applicable
File size2,411
Date (UTC)09-Oct-2012
Time (UTC)18:54

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Keywords: kb, kbautohotfix, kbqfe, kbhotfixserver, kbfix, kbsurveynew, kbexpertiseadvanced

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Article Info
Article ID : 2768494
Revision : 3
Created on : 7/11/2017
Published on : 7/11/2017
Exists online : False
Views : 198