Under the following conditions, you may receive one of two different error messages:
- You try to use a share on a Windows XP-based computer from another client computer.
- Your domain account is a member of more than 180 groups.
- You try to connect to the share by using a universal naming convention (UNC) name such as \\computer name\share name.
Under these conditions, you may receive either of the following error messages:
Windows cannot find \\computer name
computer name is not accessible [...] you might not have permissions to access computer name. More data is available.
The redirector requires that tokens that are used for authentication cannot be larger than four kilobytes (KB). Membership in a large number of groups can result in a token that is more than four KB, and this may cause the remote connection to fail.
To resolve this problem, obtain the latest service pack for Windows XP. For additional information, click the following article number to view the article in the
Microsoft Knowledge Base:
How to Obtain the Latest Windows XP Service Pack
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 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 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 Web site: 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.
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.
Date Time Version Size File name
16-May-2002 11:24 5.1.2600.45 653,824 Lsasrv.dll
To work around this problem, use the \\IP address
UNC style, or be a member of less than 180 groups.
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 Windows XP Service Pack 1.
For additional information about how to install multiple hotfixes with only one reboot, click the article number below
to view the article in the Microsoft Knowledge Base:
Use QChain.exe to Install Multiple Hotfixes with One Reboot