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Registry Guide for Windows

Registry Guide for Windows

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Home > Network > Protocols > TCP-IP

Control RFC 1323 Time Stamp and Window Scaling Options (Windows 95/98/Me)
This setting controls RFC 1323 time stamps and window scaling options for TCP/IP packets.

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This feature has four modes of operation:
  • 0 = disable RFC 1323 options
  • 1 = window scale enabled only
  • 2 = time stamps enabled only
  • 3 = both options enabled
Open your registry and find the key below.

Create a new DWORD value named "Tcp1323Opts" and set it to equal 0, 1, 2 or 3 depending on the required mode listed above.

Restart Windows for the change to take effect.

Note: Some versions of Windows 95 and 98 may require a fix from Microsoft for this option to work. See Microsoft Support article .

Registry Editor Example
| Name Type Data |
| (Default) REG_SZ (value not set) |
| Tcp1323Opts REG_DWORD 0x00000001 (1) |
-
| HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\MST... |
-

Registry Settings
System Key: [HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\MSTCP]
Value Name: Tcp1323Opts
Data Type: REG_DWORD (DWORD Value)
Value Data: 0, 1, 2 or 3

Related Tweaks

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: May 13, 2002


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