Article ID: 142803 - View products that this article applies to.
This article was previously published under Q142803
This article has been archived. It is offered "as is" and will no longer be updated.
A program that accesses a database on a Windows 95 or Microsoft Windows NT server (or other SMB server) may exhibit the following behavior:
These problems can occur if two programs are running on the same computer and they both attempt to access the same database. The problems occur because the network redirector routine used for unlocking the file and holding a new pending lock does not work correctly in a multithreaded environment.
This issue is resolved by the following updated file for Windows 95:
To install this update, follow these steps:
Vredir.vxd version 4.00.954 (10/10/95) and later.
ftp://ftp.microsoft.com/softlib/mslfiles/vrdrupd.exeFor more information about downloading files from the Microsoft Software Library, please see the following article in the Microsoft Knowledge Base:
(https://support.microsoft.com/kb/119591/EN-US/ )How to Obtain Microsoft Support Files from Online Services
The following files are installed by Vrdrupd.exe:
File name Version Date/Time Size Destination folder --------------------------------------------------------------------- Vredir.vxd 4.00.1116 6/2/97 11:16a 156,773 Windows\System Vnetsup.vxd 4.00.1112 5/30/97 11:12a 17,595 Windows\System
For additional information about issues resolved by updates to this component, please see the following articles in the Microsoft Knowledge Base:
172594The following programs are known to exhibit the behavior described in this article:
(https://support.microsoft.com/kb/172594/EN-US/ )Cannot Connect to Server with 15 Characters and Period in Name
(https://support.microsoft.com/kb/165402/EN-US/ )Windows 95 Update to Encrypt Passwords in Memory
(https://support.microsoft.com/kb/161100/EN-US/ )File May Be Truncated When Copied to a Full Network Drive
(https://support.microsoft.com/kb/157114/EN-US/ )"Access Denied" Attempting to Run File on LM/X Server
(https://support.microsoft.com/kb/152186/EN-US/ )Possible Network Data Corruption If Locking Not Used
(https://support.microsoft.com/kb/148367/EN-US/ )Possible Network File Corruption with Redirector Caching
(https://support.microsoft.com/kb/140558/EN-US/ )Deleting Files on Samba Servers May Delete Local Files Instead
(https://support.microsoft.com/kb/138249/EN-US/ )Updated Vredir.vxd Corrects Errors Running Files on LMX
(https://support.microsoft.com/kb/160807/EN-US/ )Cannot Connect to Windows NT Server with Many Shares
(https://support.microsoft.com/kb/150215/EN-US/ )Disabling Automatic Network Shortcut Resolution
(https://support.microsoft.com/kb/138014/EN-US/ )File May Be Truncated to Zero Bytes When Copied Onto Itself
(https://support.microsoft.com/kb/136834/EN-US/ )Error Copying Read-Only Files to Core SMB Server