Microsoft KB Archive/927269

= The &quot;Preparing network connections&quot; stage of startup takes longer than two minutes after you install security update 914388 on a Windows 2000-based computer =

Article ID: 927269

Article Last Modified on 7/5/2007

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APPLIES TO


 * Microsoft Windows 2000 Datacenter Server
 * Microsoft Windows 2000 Professional Edition
 * Microsoft Windows 2000 Service Pack 4

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Important This article contains information about how to modify the registry. Make sure that you back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows registry



SYMPTOMS
When you start a Microsoft Windows 2000-based computer, the &quot;Preparing network connections&quot; stage of startup takes longer than two minutes. Additionally, an event that resembles the following is logged in the System log:

Event Type: Error

Event Source: Service Control Manager

Event Category: None

Event ID: 7022

Date:

Time:

User:

Computer:

Description: The DHCP Client service hung on starting.

This problem occurs after you install security update 914388 on the computer.

Note Security update 914388 is described in security bulletin MS06-036.



CAUSE
This problem occurs because of a dependency between the DHCP Client service and the Protected Storage service. Security update 914388 introduces this dependency. Therefore, this problem occurs after you install security update 914388.

During the DHCP Client service's startup process, the Protected Storage service may not start. When this happens, the DHCP Client service changes its status to &quot;Starting.&quot; The Service Control Manager (SCM) cannot start other services until the DHCP Client service changes its status to &quot;Started&quot; or to &quot;Failed.&quot; The DHCP Client service takes several minutes to change its status. Therefore, the &quot;Preparing network connections&quot; stage of startup takes longer than two minutes.



WORKAROUND
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

To work around this problem, add the ProtectedStorage dependency to the DHCP Client service. To do this, follow these steps:  Click Start, click Run, type regedt32, and then click OK. Locate and then click the following registry subkey:

 In the details pane, double-click DependOnService. In the Value data box, position the pointer underneath any existing values, type ProtectedStorage, and then click OK. Exit Registry Editor. Restart the DHCP Client service.</li></ol>

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

914388 MS06-036: A vulnerability in the DHCP Client Service could allow remote code execution

Call stack information
The Winlogon.exe process waits for the Netlogon service to start. <pre class="fixed_text">f8dafcdc 8042bd6c f8dafd64 0006fe90 0006fe98 nt!KiSwapThread+0xc5 f8dafd04 80526145 00000001 00000000 f8dafd34 nt!KeDelayExecutionThread+0x180 f8dafd54 80465014 00000000 0006fe98 00000000 nt!NtDelayExecution+0x7f f8dafd54 77f883a3 00000000 0006fe98 00000000 nt!_KiSystemService+0xc4 0006fe80 7c59a28f 00000000 0006fe98 7c59a24f ntdll!NtDelayExecution+0xb 0006fea0 7c59a25a 000001f4 00000000 01006985 KERNEL32!SleepEx+0x32 0006feac 01006985 000001f4 00000000 0001d4c0 KERNEL32!Sleep+0xb 0006feec 01006a9c 0000b329 0001d4c0 5ffa0000 winlogon!WaitForServiceToStart+0x120 0006ff08 01002c2f 00076100 5ffa0000 00076100 winlogon!WaitForServices+0x8e 0006ff20 01007e8c 00076100 00000005 0007352c winlogon!MainLoop+0x26 0006ff58 0100af70 00071fc8 00000000 0007352c winlogon!WinMain+0x37a 0006fff4 00000000 7ffdf000 000000c8 00000100 winlogon!WinMainCRTStartup+0x156

kd> du 0x1006af8 01006af8 &quot;NETLOGON&quot; The Service Control Manager is waiting for the DHCP Client service to start. Therefore, the Service Control Manager cannot start the Netlogon service. The DHCP Client service cannot start because of a service dependency. <pre class="fixed_text">ChildEBP RetAddr Args to Child f8e7fcdc 8042bd6c f8e7fd64 0083f5f0 0083f5f8 nt!KiSwapThread+0xc5 f8e7fd04 80526145 00000001 00000000 f8e7fd34 nt!KeDelayExecutionThread+0x180 f8e7fd54 80465014 00000000 0083f5f8 00000006 nt!NtDelayExecution+0x7f f8e7fd54 77f883a3 00000000 0083f5f8 00000006 nt!_KiSystemService+0xc4 0083f5e0 7c59a28f 00000000 0083f5f8 00000001 ntdll!NtDelayExecution+0xb 0083f600 7c59a25a 00001388 00000000 7c7bc03b KERNEL32!SleepEx+0x32 0083f60c 7c7bc03b 00001388 00000000 0083fc60 KERNEL32!Sleep+0xb 0083fb60 7c744ad2 7c7bac39 0083fbb8 0083fbb0 CRYPT32!WaitForCryptService+0x18c 0083fb64 7c7bac39 0083fbb8 0083fbb0 0000000a CRYPT32!BindA+0x5 0083fbec 7ca18615 0083fc60 00000000 0083fc68 CRYPT32!CryptUnprotectData+0x68 0083fc1c 7ca18cb1 0083fc60 00000000 0083fc68 rsaenh!DllUnregisterServer+0xb17d 0083fc70 7ca1a4b5 00000020 00dd029a 000000a8 rsaenh!DllUnregisterServer+0xb819 0083fd64 7ca0aa12 00000001 00000090 00000020 rsaenh!DllUnregisterServer+0xd01d 0083fd8c 7ca0bd6f 000b6190 000b5b00 00000060 rsaenh!CPVerifySignature+0x3d9 0083fdd4 7ca0bfbe 00000000 00000060 0083fe10 rsaenh!CPVerifySignature+0x1736 0083fdfc 7c2df20b 0083fe28 00000000 00000060 rsaenh!CPAcquireContext+0x35 0083febc 7c2df397 0083ff68 00000000 00000000 ADVAPI32!CryptAcquireContextA+0x6ca 0083ff24 7736592a 0083ff68 00000000 00000000 ADVAPI32!CryptAcquireContextW+0xb8 0083ff4c 77365996 0083ff68 77360000 7c590cab dhcpcsvc!DhcpAcquireCryptContext+0x33 0083ff6c 01005cb0 00000001 000a2800 010173a0 dhcpcsvc!ServiceEntry+0x38 0083ff8c 01005cd0 0100671c 00000001 000a2800 services!SvcLoadDllAndStartSvc+0x55 0083ffa4 7c2dcf43 00000001 000a2800 006ef9c4 services!SvcServiceEntry+0x3b 0083ffb4 7c57b388 000a27f8 00000000 006ef9c4 ADVAPI32!ScSvcctrlThreadA+0xe 0083ffec 00000000 7c2dcf33 000a27f8 00000000 KERNEL32!BaseThreadStart+0x52

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