SAPGUI WSATYPE_NOT_FOUND

Hi

I'm installing SAPGUI for Windows 7.10 on windows XP and is work fine, but after reboot windows and connect to SAP this show error message WSATYPE_NOT_FOUND ninti.c Line 939 Return code -1

PS: some machines work fine after reboot

Has somebody can solve this ?

Thanks a lot.

Cleber Santz