Article ID: 906866
Article Last Modified on 10/11/2007
APPLIES TO
- Microsoft Windows Server 2003 SP1, when used with:
- Microsoft Windows Server 2003, Standard Edition (32-bit x86)
- Microsoft Windows Server 2003, Enterprise Edition
- Microsoft Windows Server 2003, Web Edition
- Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems
- Microsoft Windows Server 2003, Standard x64 Edition
- Microsoft Windows Server 2003, Enterprise x64 Edition
- Microsoft Windows XP Service Pack 2, when used with:
- Microsoft Windows XP Professional
- Microsoft Windows XP Home Edition
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
Consider the following scenario:
- On a computer that is running Microsoft Windows XP with Service Pack 2 or that is running Microsoft Windows Server 2003 with Service Pack 1, you install more than three programs that are related to file security. For example, you install more than three antivirus programs or file-encryption programs.
- The computer is part of a domain.
In this scenario, when you try to log on to the domain, you may receive a Stop error message that is similar to the following:
Note The first parameter in this error message may vary.
CAUSE
This problem occurs because the Mup.sys driver assumes that there must be no more than three file-system filter drivers running at the same time. The Mup.sys driver handles Distributed File System (DFS) file I/O requests. If there are four or more file system filter drivers, the I/O request packet (IRP) location buffer that is pre-allocated by Mup.sys will overflow. When this occurs, you receive the Stop error that is described in the Symptoms section.
RESOLUTION
Windows XP
Hotfix information
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:
Prerequisites
To apply this hotfix, you must have Windows XP SP2 installed on the computer.
Restart requirement
You must restart the computer after you apply this hotfix.
Hotfix replacement information
This hotfix does not replace any other hotfixes.
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.
File name | File version | File size | Date | Time | Platform |
---|---|---|---|---|---|
Mup.sys | 5.1.2600.2763 | 105,088 | 23-Sep-2005 | 01:26 | x86 |
Registry information
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.
After you install this hotfix, modify the DfsIrpStackSize
registry entry. To do this, follow these steps:
- Click Start, click Run, type regedit, and then click OK.
- Locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Mup\Parameters
- In the right pane, right-click DfsIrpStackSize, and then click Modify.
Note You need to create the DfsIrpStackSize registry entry if it dose not exist. To do this, follow these steps:- On the Edit menu, point to New, and then click DWORD Value.
- Type DfsIrpStackSize, and then press ENTER.
- Type 10 in the Value data box, click to select Decimal in the Base box, and then click OK.
Note The default value of theDfsIrpStackSize
registry entry is 5. A value of 5 allows for a maximum of 3 file system filter drivers. If you set the value to a number greater than 10, the value is automatically set back to 5.
Note If you do not install this hotfix, theDfsIrpStackSize
registry value is ignored. - Quit Registry Editor.
- Restart the computer.
Windows Server 2003
Service pack information
To resolve this problem, obtain the latest service pack for Windows Server 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
889100 How to obtain the latest service pack for Windows Server 2003
Hotfix information
Prerequisites
To apply this hotfix, you must have Windows Server 2003 SP1 installed on the computer.
Restart requirement
You must restart the computer after you apply this hotfix.
Hotfix replacement information
This hotfix does not replace any other hotfixes.
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 Server 2003, x86-based versions
File name | File version | File size | Date | Time | Platform |
---|---|---|---|---|---|
Mup.sys | 5.2.3790.2791 | 100,352 | 13-Sep-2006 | 10:25 | x86 |
Windows Server 2003, x64-based versions
File name | File version | File size | Date | Time | Platform |
---|---|---|---|---|---|
Mup.sys | 5.2.3790.2791 | 178,688 | 12-Sep-2006 | 21:55 | x64 |
Windows Server 2003, Itanium-based versions
File name | File version | File size | Date | Time | Platform |
---|---|---|---|---|---|
Mup.sys | 5.2.3790.2791 | 310,784 | 12-Sep-2006 | 21:55 | IA-64 |
Registry information
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.
After you install this hotfix, modify the DfsIrpStackSize
registry entry. To do this, follow these steps:
- Click Start, click Run, type regedit, and then click OK.
- Locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Mup\Parameters
- In the right pane, right-click DfsIrpStackSize, and then click Modify.
Note You need to create the DfsIrpStackSize registry entry if it dose not exist. To do this, follow these steps:- On the Edit menu, point to New, and then click DWORD Value.
- Type DfsIrpStackSize, and then press ENTER.
- Type 10 in the Value data box, click to select Decimal in the Base box, and then click OK.
Note The default value of theDfsIrpStackSize
registry entry is 5. Value 10 allows for a maximum of three file system filter drivers. If you set the value lager than 10, the value will be automatically set back to 5.
Note If you do not install this hotfix, theDfsIrpStackSize
registry value will be ignored. - Exit Registry Editor.
- Restart the computer.
STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Microsoft Windows Server 2003 Service Pack 2.
MORE INFORMATION
For more information, 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 query words: Bugcheck 35 STOP 0x35 STOP 35
Keywords: kbbug kbfix kbqfe kbpubtypekc kbwinxppresp3fix kbwinxpsp3fix kbhotfixserver kbwinserv2003presp2fix KB906866