Article ID: 2379016 - View products that this article applies to.
When you start a computer that is running Windows Vista Service Pack 2 (SP2) or Windows Server 2008 Service Pack (SP2), the computer stops responding and appears to hang at the "Applying User Settings" or "Applying Computer Settings" stage of the logon process.
You may experience that the "network connections" folder is empty. Additionally, the following services may not start at startup.
Note These services are set to the "Automatic" startup type.
This issue occurs because of a deadlock in the Service Control Manager database.
The Service Control Manager tries to start the HTTP.sys service and then puts a lock in place in the Service Control Manager database. Then, HTTP.sys makes a call that requires Cryptographic Services during startup. Then, a request is sent to start Cryptographic Services. However, a lock is already in place in the Service Control Manager database. Therefore, a deadlock occurs.
Hotfix informationA 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:
http://support.microsoft.com/contactus/?ws=supportNote 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.
PrerequisitesTo apply this hotfix, you must be running Windows Vista Service Pack 2 (SP2) or Windows Server 2008 Service Pack 2 (SP2).
For more information about how to obtain a Windows Vista service pack, click the following article number to view the article in the Microsoft Knowledge Base:
935791For more information about how to obtain a Windows Server 2008 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/935791/ )How to obtain the latest Windows Vista service pack
(http://support.microsoft.com/kb/968849/ )How to obtain the latest service pack for Windows Server 2008
Registry informationTo use the hotfix in this package, you do not have to make any changes to the registry.
Restart requirementYou have to restart the computer after you apply this hotfix.
Hotfix replacement informationThis hotfix does not replace a previously released hotfix.
File informationThe 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 Vista and Windows Server 2008 file information notesImportant Windows Vista hotfixes and Windows Server 2008 hotfixes are included in the same packages. However, only "Windows Vista" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows Vista" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.
Click here to view or hide detailed information
Workaround for Windows Vista and for Windows Server 2008To have us work around the issue for you, go to the "Fix it for me" section. If you prefer to work around the issue yourself, go to the "Let me fix it myself" section.
Fix it for me
To work around the issue automatically, click the Fix it button or link. In the File Download dialog box, click Run, and then follow the steps in the Fix it Wizard.
Fix this problem
Microsoft Fix it 50564
Let me fix it myself
Note The following method can be used in Windows Safe Mode when you are not able to log on successfully to install the hotfix or fixit.
To work around the issue without installing the hotfix, create a DependOnService registry key to modify the behavior of HTTP.sys. This makes HTTP.sys depend on crytosvc service to be started first. To do this, follow these steps:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/824684/ )Description of the standard terminology that is used to describe Microsoft software updates
Additional file informationClick here to view or hide detailed information
Article ID: 2379016 - Last Review: March 26, 2012 - Revision: 12.0