Registry Home > Network > Servers

Control MS-DOS File Control Blocks (FCBs) Usage on Servers (Windows NT/2000)

Specifies whether MS-DOS File Control Blocks (FCBs) are folded together, so multiple remote opens are performed as a single open on the server to save resources.

This tweak can be easily applied using WinGuides Tweak Manager.
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Open your registry and find or create the key below.

Create a new DWORD value, or modify the existing value, called "EnableFCBopens" and set it according to the value data below.

Exit your registry; you may need to restart or log out of Windows for the change to take effect.

Registry Editor Example
|(Default)REG_SZ(value not set)|
|EnableFCBopensREG_DWORD0x00000001 (1)|
Registry Settings
System Key: [HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\LanmanServer\
Value Name: EnableFCBopens
Data Type: REG_DWORD (DWORD Value)
Value Data: 0 = disabled, 1 = enabled (Default is 1)

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Disclaimer: Modifying the registry can cause serious problems that may require you to reinstall your operating system. We cannot guarantee that problems resulting from modifications to the registry can be solved. Use the information provided at your own risk.

Last modified: April 4, 2002