If both SQL 7.0 and DFS are installed on your server, your W9x clients may hang while logging on or accessing a server share.

SQL 7.0 sets a registry value on the server that the W9x clients can not process. Use Regedt32 to navigate to:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\LanManServer\Parameters

Double-click the MaxMpxCt value name in the right hand pane. This REG_WORD entry has a data value of 0x1FF (Hexadecimal Radix). Change the data value to 0x1FE and click OK.

NOTE: When the W9x clients process this registry entry, they add 1 to the 0x1FF, resulting in 0x200. These clients store the results in a temporary value of 2 bytes which results in a zero value being stored. This causes various system components to malfunction.