This article was previously published under Q164352
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A Winsock application may cause a Stop 0x00000050PAGE_FAULT_IN_NONPAGED_AREA error in Afd.sys.
The application passes a socket address length that is larger than themaximum socket address length in the TDI buffer in Afd.sys. The socketaddress data that goes beyond the MaxSockaddrLength overwrites the stack.
Microsoft has confirmed this to be a problem in Windows NT version 4.0.This problem was corrected in the latest Microsoft Windows NT 4.0 U.S.ServicePack. For information on obtaining the service pack, query on the followingwordin the Microsoft Knowledge Base (without the spaces):