Differences between Service Pack 6a and Service Pack 6
Windows NT Service Pack 6a was released to fix specific issues in Service Pack 6.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
246009 Windows NT 4.0 Service Pack 6a Available
Windows NT 4.0 Service Pack 6a also contains the SP6 fixes that are described below.
Networking
216793 DHCP Server Stops Leasing Addresses if a Sharing Violation Occurs
221497 RRAS: RIP Routing Stops When System Time Is Changed
221515 Delay When Saving File to a Server with High Number of Shares
222077 Access Violation in RRAS When Windows Time Service Adjusts System Time
222164 DSMN Fails to Synchronize Passwords When Password History Is Turned On on NetWare
223281 Alternate File Names Are Not Supported in NetWare Redirector
223374 Installing SP 4 Automatically Enables DHCP Logging
223437 NWRDR Access Violates in Module Nwslib.dll
223450 TCP Initial Retransmission Timer Adjustment Added to Windows NT 4.0
223497 Err Msg: Logon Failure: User Not Granted the Requested Logon Type
223997 Log On Attempt Does Not Work on Computers with Windows NT Newly Installed
224428 STOP 0x0A in Redirector with Invalid Server Responses
224547 Memory Leak in Routing and Remote Access Service
224550 STOP 0x0000000A in Netbt.sys When Parsing LMHOSTS File
224585 TCB Hash Function Modified to Improve Network Performance
224600 RPC Application Causes Access Violation When Dereferencing Freed Connection Under Stress
225004 WSAEMSGSIZE - Error 10040 in Winsock 2.0
225255 Some Share Names May Not Work Correctly
225324 NetBT Clients Can Only Connect if They Are Set to Use B-Node Name Resolution
225491 RRAS Server Does Not Send FramedIPAddress in RADIUS Accounting Request Packet
225503 MD-5 CHAP Authentication Does Not Work with Windows NT 4.0 Service Pack 4
226487 IAS Returns Incorrect Data During Invalid Logon Attempt
226513 NPFS Leak When AddJob API Returns a Named Pipe
227880 Modifying TCP/IP Fields May Disable DHCP Relay Agent Service
228456 Unnecessary Dialog Appears When Configuring TCP/IP to Use DHCP with RIP
228538 STOP 0x1E in Rdr.sys When DormantFileLimit Set to 0
228597 DHCP Server With Deactivated Scope Sends a DHCPNAK to Clients
228802 MS RPC Incorrect Behavior for Frame Following Maybe Frame
228845 Zone Transfers Are Incomplete When Deleting a Delegation
228942 Windows NT SP4 May Cause Loss of TCP/IP Connectivity in WLBS Host
229098 AppleTalk Does Not Always Respond to ZIP Queries
229111 Clients Running a Different Language Version Overwrite Printer Setting
229647 RPC, RAS, PPTP (40-bit) Encryption Added to Windows NT 4.0 French Version
229894 CSNW Experiences Delays Opening Files on the Network
230014 RRAS Does Not Report Domain Name for Users in Accounting Packets
230307 Slow Performance in TCP/IP When Reconnecting
230381 TCP/IP Dead Gateway Detection May Not Work if the ARP Cache is Empty
230677 Malformed Phonebook Entry Security Vulnerability in RAS Client
231337 Netdde.exe Does Not Relay WM_DDE_TERMINATE to Remote Clients
231790 File Sharing Operations to a share on Local Computer may be Slow
231934 Connecting to a Local Share Using Cached Credentials Is Unsuccessful in Windows NT 4.0 SP4 and SP5
231965 PPTP Performance Problems After Applying SP4
232133 STOP 0x1E or STOP 0xA with More Than 200 Ports in RRAS
232298 STOP 0x0000000A in SFMAtalk Because of Invalid Frame
232512 TCP/IP May Retransmit Packets Prematurely
232559 Novell Print Banner Always Printed After Applying Service Pack 5
233048 Remote Access Logs Event ID 20050 When PPTP Connection Is Refused
233094 STOP 1E Error Message in Sfmsrv.sys
233249 NET SEND MyComputer Command May Not Work if Using a Hardware Profile with a Network Adapter Disabled
233303 DUN Credentials Cached When Save Password Not Selected with RRAS
233517 Domain Logon Attempt Does Not Work with M-Node Clients Using WINS Proxy Agent
234351 Memory Leak When Performance Counters Are Not Available
234593 Windows NT 4.0 Tcpip.sys Hotfixes Dated 4/28/99 to 5/28/99 Replaced
234980 Invalid Multicast Packets Sent with Windows NT TCP/IP Stack
235425 CreateFile() Can Cause Leak in Paged Pool Memory
235543 File Copy to Macintosh Volume Takes Time
235677 FTP Client May Stop Responding (Hang) with Temporary Network or FTP Server Problem
235703 NetWare Migration Tool May Not Migrate Long File Names with Correct Permissions
235863 RPC Locator Returns Duplicate or Missing Entries to RpcNsBindingLookup Calls
235964 Recovery Operation for Certificate Server May Invalidate Certificate Authority Keys
236024 Cannot Use Connection Manager to Log On to Domain with RAS
236316 Performance Improvement for Redirector/Server Connections Involving Small File Operations
236411 DNS Event Log Key Does Not Work as Expected
236414 Cannot Use Shares with LMCompatibilityLevel set to Only NTLM 2 Authentication
236449 Net LocalGroup Command May Cause Access Violation
236460 DNS Service Does Not Start and Event IDs May Be Displayed
236584 128-Bit RAS Client Is Authenticated but Cannot Use Resources on the Network
236959 Access Violation in Mpr.dll During Startup
237425 Modem No Longer Dials After Approximately Two Days
237942 Resolution of Unqualified Host Name May Not Succeed with SP5
237968 RAS Configuration May Change When You Install Multiple ISDN Cards on the Same Computer
238020 XIMS: NNTP Service Converts Two-Digit Years Incorrectly
238062 BDC Promotion May Be Unsuccessful Using Server Manager
238125 Stop 1E in Nbf.sys
238171 RAS Port Becomes Unavailable in Windows NT 4.0
238294 Server Comment Set with SNMP Is Not Retained After Restart
238380 Windows NT 4.0 Sometimes Hangs at Shutdown
238734 How to Disable Microsoft CHAP Authentication
238917 Delay If No Response for DHCP Renew/Discover
238966 Statically Configured WINS Client Refreshes with Secondary WINS Server
239079 DNS INT Zone File Identified as Reverse Instead of Forward After Applying WinNT 4.0 SP4
239132 Exchange Clients Appear to Intermittently Hang During Normal Operation
239870 RasDial Returns an Invalid Error Code
240059 Split Horizon with Poison Reverse Setting Causes Incorrect RIP Updates on Multiple Adapters
240089 RRAS Port Becomes Unavailable in Windows NT 4.0
240195 NET USER /TIMES Command Does Not Work in Year 2000
241189 SNMP Memory Leak in Windows NT4.0 Peer-to-Peer Network
241223 Overloaded DHCP Server Stops Functioning with Limited Queue Size
241480 Resource Leaks Through Iphlpapi.dll in Windows NT 4.0
241549 Callback Numbers May Not Work Properly
241657 Client's Valid x.x.x.0 Host Address Is Disallowed on the Network
242032 Subordinate Certificates Appear Invalid with Certificate Server 1.0
242183 Cisco Cable Modem Unable to Receive IP Address from Windows NT 4.0 DHCP Server
242303 NDIS Driver May Not Properly Release a Network Adapter's Resources
242398 Cluster Loses Track of Custom Resource DLL Registration After Resource Monitor Failure
242523 Cannot Delete Macintosh Volume Using MACFILE REMOVE VOLUME Command
242594 Multiple-Processor Server Hangs When Receiving a Connection Request from a RAS Client