``` 0: kd> g Target is not responding. Attempting to reconnect... KDTARGET: Refreshing KD connection *** Fatal System Error: 0x00000050 (0xFFFF87014D20F000,0x0000000000000002,0xFFFFF8070E44422B,0x0000000000000002) Driver at fault: *** HTTP.sys - Address FFFFF8070E44422B base at FFFFF8070E2E0000, DateStamp a74c7183 . Break instruction exception - code 80000003 (first chance) A fatal system error has occurred. Debugger entered on first try; Bugcheck callbacks have not been invoked. A fatal system error has occurred. For analysis of this file, run !analyze -v nt!DbgBreakPointWithStatus: fffff801`94b892d0 cc int 3 0: kd> !analyze -v Target is not responding. Attempting to reconnect... Connected to Windows 10 26100 x64 target at (Wed Jun 17 00:44:05.324 2026 (UTC - 7:00)), ptr64 TRUE Loading Kernel Symbols ............................................................... ................................................................ ................................................................ ......... Loading User Symbols Loading unloaded module list ......... ******************************************************************************* * * * Bugcheck Analysis * * * ******************************************************************************* PAGE_FAULT_IN_NONPAGED_AREA (50) Invalid system memory was referenced. This cannot be protected by try-except. Typically the address is just plain bad or it is pointing at freed memory. Arguments: Arg1: ffff87014d20f000, memory referenced. Arg2: 0000000000000002, X64: bit 0 set if the fault was due to a not-present PTE. bit 1 is set if the fault was due to a write, clear if a read. bit 3 is set if the processor decided the fault was due to a corrupted PTE. bit 4 is set if the fault was due to attempted execute of a no-execute PTE. - ARM64: bit 1 is set if the fault was due to a write, clear if a read. bit 3 is set if the fault was due to attempted execute of a no-execute PTE. Arg3: fffff8070e44422b, If non-zero, the instruction address which referenced the bad memory address. Arg4: 0000000000000002, (reserved) Debugging Details: ------------------ Target is not responding. Attempting to reconnect... Target is not responding. Attempting to reconnect... Target is not responding. Attempting to reconnect... Target is not responding. Attempting to reconnect... Target is not responding. Attempting to reconnect... Target is not responding. Attempting to reconnect... Target is not responding. Attempting to reconnect... Target is not responding. Attempting to reconnect... Target is not responding. Attempting to reconnect... Target is not responding. Attempting to reconnect... KEY_VALUES_STRING: 1 Key : AV.PTE Value: Invalid Key : AV.Page.Virtual Value: 0xffff87014d200000 Key : AV.Type Value: Write Key : Analysis.CPU.mSec Value: 17375 Key : Analysis.Elapsed.mSec Value: 72552 Key : Analysis.IO.Other.Mb Value: 5 Key : Analysis.IO.Read.Mb Value: 2 Key : Analysis.IO.Write.Mb Value: 0 Key : Analysis.Init.CPU.mSec Value: 13109 Key : Analysis.Init.Elapsed.mSec Value: 1530697 Key : Analysis.Memory.CommitPeak.Mb Value: 251 Key : Analysis.Version.DbgEng Value: 10.0.29547.1002 Key : Analysis.Version.Description Value: 10.2602.27.2 amd64fre Key : Analysis.Version.Ext Value: 1.2602.27.2 Key : Bugcheck.Code.KiBugCheckData Value: 0x50 Key : Bugcheck.Code.LegacyAPI Value: 0x50 Key : Bugcheck.Code.TargetModel Value: 0x50 Key : Failure.Bucket Value: AV_VRF_HTTP!memcpy Key : Failure.Exception.IP.Address Value: 0xfffff8070e44422b Key : Failure.Exception.IP.Module Value: HTTP Key : Failure.Exception.IP.Offset Value: 0x16422b Key : Failure.Hash Value: {92f0216a-fb7d-44d7-de19-f8985ede1fdb} Key : Faulting.IP.Type Value: Paged Key : Hypervisor.Enlightenments.Value Value: 12576 Key : Hypervisor.Enlightenments.ValueHex Value: 0x3120 Key : Hypervisor.Flags.AnyHypervisorPresent Value: 1 Key : Hypervisor.Flags.ApicEnlightened Value: 0 Key : Hypervisor.Flags.ApicVirtualizationAvailable Value: 0 Key : Hypervisor.Flags.AsyncMemoryHint Value: 0 Key : Hypervisor.Flags.CoreSchedulerRequested Value: 0 Key : Hypervisor.Flags.CpuManager Value: 0 Key : Hypervisor.Flags.DeprecateAutoEoi Value: 1 Key : Hypervisor.Flags.DynamicCpuDisabled Value: 0 Key : Hypervisor.Flags.Epf Value: 0 Key : Hypervisor.Flags.ExtendedProcessorMasks Value: 0 Key : Hypervisor.Flags.HardwareMbecAvailable Value: 0 Key : Hypervisor.Flags.MaxBankNumber Value: 0 Key : Hypervisor.Flags.MemoryZeroingControl Value: 0 Key : Hypervisor.Flags.NoExtendedRangeFlush Value: 1 Key : Hypervisor.Flags.NoNonArchCoreSharing Value: 0 Key : Hypervisor.Flags.Phase0InitDone Value: 1 Key : Hypervisor.Flags.PowerSchedulerQos Value: 0 Key : Hypervisor.Flags.RootScheduler Value: 0 Key : Hypervisor.Flags.SynicAvailable Value: 1 Key : Hypervisor.Flags.UseQpcBias Value: 0 Key : Hypervisor.Flags.Value Value: 536632 Key : Hypervisor.Flags.ValueHex Value: 0x83038 Key : Hypervisor.Flags.VpAssistPage Value: 1 Key : Hypervisor.Flags.VsmAvailable Value: 0 Key : Hypervisor.RootFlags.AccessStats Value: 0 Key : Hypervisor.RootFlags.CrashdumpEnlightened Value: 0 Key : Hypervisor.RootFlags.CreateVirtualProcessor Value: 0 Key : Hypervisor.RootFlags.DisableHyperthreading Value: 0 Key : Hypervisor.RootFlags.HostTimelineSync Value: 0 Key : Hypervisor.RootFlags.HypervisorDebuggingEnabled Value: 0 Key : Hypervisor.RootFlags.IsHyperV Value: 0 Key : Hypervisor.RootFlags.LivedumpEnlightened Value: 0 Key : Hypervisor.RootFlags.MapDeviceInterrupt Value: 0 Key : Hypervisor.RootFlags.MceEnlightened Value: 0 Key : Hypervisor.RootFlags.Nested Value: 0 Key : Hypervisor.RootFlags.StartLogicalProcessor Value: 0 Key : Hypervisor.RootFlags.Value Value: 0 Key : Hypervisor.RootFlags.ValueHex Value: 0x0 Key : SecureKernel.HalpHvciEnabled Value: 0 Key : WER.OS.Branch Value: ge_release Key : WER.OS.Version Value: 10.0.26100.1 BUGCHECK_CODE: 50 BUGCHECK_P1: ffff87014d20f000 BUGCHECK_P2: 2 BUGCHECK_P3: fffff8070e44422b BUGCHECK_P4: 2 FAULTING_THREAD: ffff870fbd7b5080 EXCEPTION_PARAMETER1: 0000000000000001 EXCEPTION_PARAMETER2: ffff87014d20f000 WRITE_ADDRESS: Target is not responding. Attempting to reconnect... ffff87014d20f000 Special pool MM_INTERNAL_CODE: 2 PROCESS_NAME: System IP_IN_PAGED_CODE: HTTP!memcpy+1eb fffff807`0e44422b 0f2b59e0 movntps xmmword ptr [rcx-20h],xmm3 STACK_TEXT: ffffe703`fdee6738 fffff801`94c3fa92 : ffffe703`fdee67b8 00000000`00000001 00000000`00000080 fffff801`94d52901 : nt!DbgBreakPointWithStatus ffffe703`fdee6740 fffff801`94c3efbe : 00000000`00000003 ffffe703`fdee68a0 fffff801`94d52b90 ffffe703`fdee6e60 : nt!KiBugCheckDebugBreak+0x12 ffffe703`fdee67a0 fffff801`94b88557 : 00000000`00000000 fffff801`9499caf2 ffff8701`4d20f000 fffff801`95236341 : nt!KeBugCheck2+0xb2e ffffe703`fdee6f30 fffff801`9499e960 : 00000000`00000050 ffff8701`4d20f000 00000000`00000002 ffffe703`fdee71d0 : nt!KeBugCheckEx+0x107 ffffe703`fdee6f70 fffff801`948d3e96 : 00000000`00000000 ffff8000`00000000 ffff8701`4d20f000 0000007f`fffffff8 : nt!MiSystemFault+0x850 ffffe703`fdee7060 fffff801`94d47fcb : 00000000`00000000 00000000`00000028 00000000`c0000016 ffffe703`fdee7240 : nt!MmAccessFault+0x646 ffffe703`fdee71d0 fffff807`0e44422b : fffff807`0e30a148 ffff870f`bf516b60 ffffe703`fdee7419 ffff870f`bf564240 : nt!KiPageFault+0x38b ffffe703`fdee7368 fffff807`0e30a148 : ffff870f`bf516b60 ffffe703`fdee7419 ffff870f`bf564240 00000000`c0000016 : HTTP!memcpy+0x1eb ffffe703`fdee7370 fffff807`0e309575 : fffff807`0e3093e0 ffff870f`f1d60d50 00000000`00000001 ffff870f`bf516b60 : HTTP!UlpParseNextRequest+0x528 ffffe703`fdee7480 fffff807`0e457145 : fffff807`0e3093e0 fffff807`0e3093e0 00000000`00000001 00000000`00000000 : HTTP!UlpHandleRequest+0x195 ffffe703`fdee7520 fffff801`94b0eaba : ffff870f`ba182f90 fffff807`0e486f20 ffff870f`bd7b5080 fffff801`257ad180 : HTTP!UlpThreadPoolWorker+0x126545 ffffe703`fdee75b0 fffff801`94d39fa4 : fffff801`257ad180 ffff870f`bd7b5080 fffff801`94b0ea60 006f0069`00740061 : nt!PspSystemThreadStartup+0x5a ffffe703`fdee7600 00000000`00000000 : ffffe703`fdee8000 ffffe703`fdee1000 00000000`00000000 00000000`00000000 : nt!KiStartSystemThread+0x34 SYMBOL_NAME: HTTP!memcpy+1eb MODULE_NAME: HTTP IMAGE_NAME: HTTP.sys STACK_COMMAND: .process /r /p 0xffff870fb36e4040; .thread /r /p 0xffff870fbd7b5080 ; kb BUCKET_ID_FUNC_OFFSET: 1eb FAILURE_BUCKET_ID: AV_VRF_HTTP!memcpy OS_VERSION: 10.0.26100.1 BUILDLAB_STR: ge_release OSPLATFORM_TYPE: x64 OSNAME: Windows 10 FAILURE_ID_HASH: {92f0216a-fb7d-44d7-de19-f8985ede1fdb} Followup: MachineOwner --------- 0: kd> k # Child-SP RetAddr Call Site 00 ffffe703`fdee6738 fffff801`94c3fa92 nt!DbgBreakPointWithStatus 01 ffffe703`fdee6740 fffff801`94c3efbe nt!KiBugCheckDebugBreak+0x12 02 ffffe703`fdee67a0 fffff801`94b88557 nt!KeBugCheck2+0xb2e 03 ffffe703`fdee6f30 fffff801`9499e960 nt!KeBugCheckEx+0x107 04 ffffe703`fdee6f70 fffff801`948d3e96 nt!MiSystemFault+0x850 05 ffffe703`fdee7060 fffff801`94d47fcb nt!MmAccessFault+0x646 06 ffffe703`fdee71d0 fffff807`0e44422b nt!KiPageFault+0x38b 07 ffffe703`fdee7368 fffff807`0e30a148 HTTP!memcpy+0x1eb 08 ffffe703`fdee7370 fffff807`0e309575 HTTP!UlpParseNextRequest+0x528 09 ffffe703`fdee7480 fffff807`0e457145 HTTP!UlpHandleRequest+0x195 0a ffffe703`fdee7520 fffff801`94b0eaba HTTP!UlpThreadPoolWorker+0x126545 0b ffffe703`fdee75b0 fffff801`94d39fa4 nt!PspSystemThreadStartup+0x5a 0c ffffe703`fdee7600 00000000`00000000 nt!KiStartSystemThread+0x34 0: kd> g ```