Article ID: 810907
Article Last Modified on 8/29/2007
APPLIES TO
- Microsoft Windows XP Professional x64 Edition
- Microsoft Windows XP Home Edition
- Microsoft Windows XP Professional
- Microsoft Windows XP Tablet PC Edition
SYMPTOMS
Client computers that are running Windows XP Service Pack 1 (SP1) and that are configured to require Server Message Block (SMB) signing may drop SMB signing and may have problems communicating over your network. For example, you may experience any of the following symptoms:
- When you open a Microsoft Office file, it is opened as read-only. You must save the file locally to make changes.
- You cannot copy files over the network, and network paths are not accepted by any network provider. For example, you may receive the following error message when you try to connect to an SMB share:
- You receive the following error message when you try to open a file on a network share:
- Error messages similar to these may appear in the event log after you apply Group Policy objects (GPOs):
RESOLUTION
Service pack information
To resolve this problem, obtain the latest service pack for Microsoft Windows XP. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
322389 How to obtain the latest Windows XP service pack
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:
The English version of this fix has the file attributes (or later) 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 tool in Control Panel.
Windows XP Home Edition and Windows XP Professional:
Date Time Version Size File name ------------------------------------------------------ 18-Dec-2002 16:38 5.1.2600.1152 399,488 Mrxsmb.sys 18-Dec-2002 16:38 5.1.2600.1152 154,752 Rdbss.sys
Windows XP 64-Bit Edition:
Date Time Version Size File name -------------------------------------------------------- 18-Dec-2002 16:39 5.1.2600.1152 1,256,064 Mrxsmb.sys 18-Dec-2002 16:39 5.1.2600.1152 488,704 Rdbss.sys
STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Microsoft Windows XP Service Pack 2.
Note that the information in this article supersedes the information that was previously available in Microsoft Knowledge Base article 331519. For additional information about related issues, click the following article number to view the article in the Microsoft Knowledge Base:
812937 File Lock or Access Denied Error Message When You Save Files over the Network
Additional query words: Q331519 Network File Errors Occur After You Install Windows XP SP1
Keywords: kbhotfixserver kbqfe kbwinxpsp2fix kbenv kbnetwork kbfilesystems kberrmsg kbqfe kbwinxppresp2fix kbfix kbbug KB810907