Registry Tip #293: TCP Support for RFC 1122 Handle Urgent Data

Hits: Failed to execute CGI : Win32 Error Code = 3


Hive: HKEY_LOCAL_MACHINE
Key: System\CurrentControlSet\Services\VxD\MSTCP
Name: PMTUDiscovery
Type: REG_DWORD
Value: 1 default = RFC 1122

A value of 0 specifies that Microsoft TCP/IP is to treat urgent data the way many UNIX systems do.