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Microsoft KB Archive/157114

From BetaArchive Wiki

"Access Denied" Attempting to Run File on LM/X Server


The information in this article applies to:

  • Microsoft Windows 95


When you are using a Windows 95-based computer to connect to a LAN Manager for Unix (LM/X) server, you may receive an "Access denied" error message when you try to run a file that has only Read and Execute permissions.


When a Windows 95-based computer connects to a server using the SMB (Server Message Block) protocol for file and print sharing, it negotiates a dialect level for the connection. Some LM/X servers support only older dialect levels.

When an older dialect is negotiated (the Microsoft Networks 3.0 dialect in this case, also known as Core SMB), the Windows 95 client must use only those SMB commands supported by the down-level server. In this case, the Windows 95 client issues an "open" SMB command, requesting open mode 23 or execute mode. However, the "open" command supports only read, write, and read/write mode, making it an illegal SMB command.


To resolve this problem, download the following file from the Microsoft Download Center. Click the file name below to download the file:


For additional information about how to download Microsoft Support files, click the article number below to view the article in the Microsoft Knowledge Base:

Q119591 How to Obtain Microsoft Support Files from Online Services

Microsoft used the most current virus detection software available on the date of posting to scan this file for viruses. Once posted, the file is housed on secure servers that prevent any unauthorized changes to the file.

This fix for Windows 95 should have the following file attributes (or later):

   File name     Version    Date      Time      Size
   VREDIR.VXD    4.00.960   9/20/96   10:00am   140,403 bytes 


Microsoft has confirmed this to be a problem in Microsoft Windows 95 and Microsoft Windows 98.

This issue is not resolved in Microsoft Windows 98.


For additional information about issues resolved by updates to this component, please see the following articles in the Microsoft Knowledge Base:

Q183493 Batch File Calling CD Command May Not Run on HPFS

Q174371 Possible Database File Damage When Data Is Appended

Q172594 Cannot Connect to Server with 15 Characters and Period in Name

Q167712 Fatal Exception Error in VREDIR with DCOM Program

Q165403 Windows 95 Update Prevents Sending Clear-Text Password Over Net

Q165402 Windows 95 Update to Encrypt Passwords in Memory

Q161100 File May Be Truncated When Copied to a Full Network Drive

Q160807 Cannot Connect to Windows NT Server with Many Shares

Q156497 Duplicate Print Output on PC-LAN Server from Windows 95 Client

Q152186 Possible Network Data Corruption If Locking Not Used

Q150215 Disabling Automatic Network Shortcut Resolution

Q148367 Possible Network File Corruption with Redirector Caching

Q142803 Locking Error or Computer Hangs Accessing Network Database Files

Q140558 Deleting Files on Samba Servers May Delete Local Files Instead

Q138249 Updated Vredir.vxd Corrects Errors Running Files on LMX

Q138014 File May Be Truncated to Zero Bytes When Copied Onto Itself

Q136834 Error Copying Read-Only Files to Core SMB Server

For additional information about Windows 95 updates, please see the following article in the Microsoft Knowledge Base:

Q161020 Implementing Windows 95 Updates

Additional query words:

Keywords : win95
Issue type :
Technology : kbWin95search kbWin95

Last Reviewed: December 15, 2000
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