Knowledge Base

Mapped Drive Access Denied to Windows 2000-Based Server

PSS ID Number: 278558

Article Last Modified on 4/6/2004

The information in this article applies to:

Microsoft Windows Millennium Edition
Microsoft Windows 98
Microsoft Windows 98 Second Edition

This article was previously published under Q278558

NOTE: The update described in this article has been superceded as noted in the following Microsoft Knowledge Base articles:

293793 Exception 0E in Vredir Error Messages Opening Network Files

323466 Availability of the Active Directory client extension update for Windows 98

SYMPTOMS

You may experience any of the following problems that are caused by authentication problems in your logon session:

When you open and then try to save a file in WordPad to a mapped drive, you receive the following error message:

Message: drive:\ is not accessible
Access is denied.
When you open and then try to save a file in Microsoft Word 2000 to a mapped drive, you may receive the following error message:
Message: Word cannot save or create this file. The disk may be full or write-protected.

Try one of more of the following:
- Free more memory.
- Make sure that the disk you want to save the file on is not full, write-protected, or damaged.
drive:\filename
When you right-click a mapped drive in My Computer, and then click Open, you may receive the following error message:

Message: drive:\ is not accessible
When you type dir mapped_drive_letter at a command prompt, you may receive the following error message:

Volume in drive mapped_drive_letter has no label
Access denied
When you type dir \\servername\mapped_share_name at a command prompt, you may receive the following error message:

Access denied
If you disconnect the drive share and then attempt to reconnect, the following error message may be displayed:

Enter Network Password
You must supply a password to make this connection.
Resource: \\servername\sharename

CAUSE

The client computer sends invalid encrypted password information to the server if the session that has been established between them is reset more than once. A session on the server can automatically time out, as noted in the Microsoft Knowledge Base article that is listed in the "Workaround" section of this article. Additionally, a session on a Microsoft Windows 2000-based computer can be disconnected in the user interface by right-clicking My Computer, clicking Manage, clicking Computer Management, clicking Shared Folders, and then clicking Sessions.

You can see a session reset that is initiated by the server in network traces as a TCP Reset packet on port 139 (NetBios Server service). During reconnection, the client computer sends a C Session Setup And X server message block (SMB) for the share. The server returns ACCESS_DENIED in an R Session Setup SMB.

RESOLUTION

A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this fix should have the following file attributes or later:

   Date      Time    Version      Size     File name   Operating system
   --------------------------------------------------------------------
   11/14/2000  11:33a  4.10.2154  165,461  Vredir.vxd  Windows 98
   11/14/2000  11:47a  4.10.2229  165,461  Vredir.vxd  Windows 98 
                                                       Second Edition
   11/14/2000  11:15a  4.90.3003  161,849  Vredir.vxd  Windows Me

WORKAROUND

To work around this issue, use any of the following methods:

Click Start, click Run, type winipcfg, and then release and renew the DHCP lease. This essentially resets the entire network stack.
Open Network Neighborhood, and then double-click the affected server and share.
Type net use \\servername\sharename at a command prompt.
Click Start, click Run, and then type \\servername.

For additional information about control of the LAN Autodisconnect feature in Windows 2000, click the article number below to view the article in the Microsoft Knowledge Base:

138365 How the Autodisconnect Works in Windows NT

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

MORE INFORMATION

The following Microsoft Knowledge Base articles document other problems that are also fixed by the update described in this article:

271754 Exception 0E in Vredir.vxd During CoCreateInstanceEx() on Remote DCOM Server

272594 Problems logging on to a Windows 2000-based server or a Windows 2003-based server

278456 Cannot Save File in Windows 2000 Shared Folder

For additional information about Windows Me hotfixes, click the article number below to view the article in the Microsoft Knowledge Base:

295413 General Information About Windows Millennium Edition Hotfixes

For additional information about Windows 98 and Windows 98 Second Edition hotfixes, click the article number below to view the article in the Microsoft Knowledge Base:

206071 General Information About Windows 98 and Windows 98 Second Edition Hotfixes

Additional query words: ACCESS_DENIED account lockout w98hem win2000hotnet

Keywords: kberrmsg kbfix kbprb kbQFE KB278558
Technology: kbWin98 kbWin98SE kbWin98search kbWin98SEsearch kbWinME kbWinMEsearch

Microsoft KB Archive/278558

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