Hi, thanks for your reply. My .NET Framework is already up to date (version 4.8.1). Sorry about the typo earlier.
.NET Framework 4.8.1 or a later update is already installed on this computer.
I know this is obvious, but have you run Windows Update and made sure all the cumulative updates for .NET have installed successfully? The latest was KB5066131.
Thanks again ! and yes, my Windows is totally up to date, with this specific cumulative update:
2025-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 24H2 for x64 (KB5066131)
successfully installed on 16/10/2025.Since my first message, I’ve also tried launching Windows in Selective Startup mode (minimal services only) through msconfig, but the installer still crashes instantly, same behavior, same error.
So it’s clearly not being caused by any background service or software conflict. Still completely baffled at this point.
One thing I'm wondering about: it's important to run DISM before sfc, not the other way around. Your troubleshooting list makes me wonder if you did that in the wrong order?
Hi Steve, thanks again for your help, and just to be 100% sure I did it again :
C:\Windows\System32> DISM.exe /Online /Cleanup-image /Restorehealth
Deployment Image Servicing and Management tool
Version: 10.0.26100.5074
Image Version: 10.0.26200.7019
[==========================100.0%==========================] The restore operation completed successfully.
The operation completed successfully.
C:\Windows\System32>sfc /scannow
Beginning system scan. This process will take some time.
Beginning verification phase of system scan.
Verification 100% complete.
Windows Resource Protection did not find any integrity violations.After a reboot, I tried launching a freshly downloaded OculusSetup.exe, but the issue persists. I also captured a crash dump and analyzed it with WinDbg. Here’s the report:
0:000> !analyze -v
!analyze -v
............................
*******************************************************************************
* *
* Exception Analysis *
* *
*******************************************************************************
KEY_VALUES_STRING: 1
Key : Analysis.CPU.mSec
Value: 375
Key : Analysis.Elapsed.mSec
Value: 1168
Key : Analysis.IO.Other.Mb
Value: 0
Key : Analysis.IO.Read.Mb
Value: 11
Key : Analysis.IO.Write.Mb
Value: 1
Key : Analysis.Init.CPU.mSec
Value: 546
Key : Analysis.Init.Elapsed.mSec
Value: 315576
Key : Analysis.Memory.CommitPeak.Mb
Value: 79
Key : Analysis.Version.DbgEng
Value: 10.0.29457.1000
Key : Analysis.Version.Description
Value: 10.2506.23.01 x86fre
Key : Analysis.Version.Ext
Value: 1.2506.23.1
Key : Failure.Bucket
Value: BREAKPOINT_80000003_OculusSetup.exe!Unknown
Key : Failure.Exception.Code
Value: 0x80000003
Key : Failure.Hash
Value: {2146e253-ac70-9b24-fa2e-cb451b020aca}
Key : Failure.ProblemClass.Primary
Value: BREAKPOINT
Key : Faulting.IP.Type
Value: Null
Key : Timeline.OS.Boot.DeltaSec
Value: 5781
Key : Timeline.Process.Start.DeltaSec
Value: 2
Key : WER.OS.Branch
Value: ge_release
Key : WER.OS.Version
Value: 10.0.26100.1
Key : WER.Process.Version
Value: 1.103.0.0
FILE_IN_CAB: OculusSetup.exe_251106_133804.dmp
COMMENT:
*** "C:\Tools\Sysinternals\procdump.exe" -accepteula -t -ma -x C:\Users\maick\AppData\Local\CrashDumps C:\OculusTemp\OculusSetup.exe
*** Process termination
NTGLOBALFLAG: 70
APPLICATION_VERIFIER_FLAGS: 0
EXCEPTION_RECORD: (.exr -1)
.exr -1
ExceptionAddress: 00000000
ExceptionCode: 80000003 (Break instruction exception)
ExceptionFlags: 00000000
NumberParameters: 0
FAULTING_THREAD: 5a5c
PROCESS_NAME: OculusSetup.exe
ERROR_CODE: (NTSTATUS) 0x80000003 - {EXCEPTION} Breakpoint A breakpoint has been reached.
EXCEPTION_CODE_STR: 80000003
STACK_TEXT:
016ff9a8 776f4104 ffffffff c0000005 00000001 ntdll!NtTerminateProcess+0xc
016ffa84 5d7838b4 c0000005 00000000 c0000005 ntdll!RtlExitUserProcess+0x184
016ffa98 5d781cbd 016ffab4 7623b113 c0000005 AcLayers!NS_FaultTolerantHeap::FthExitUserProcess+0x92
016ffaa0 7623b112 c0000005 77e8f3b0 ffffffff AcLayers!NS_FaultTolerantHeap::APIHook_RtlExitUserProcess+0xd
016ffab4 00ec614f c0000005 016ffae4 00ec610d kernel32!ExitProcessImplementation+0x12
WARNING: Stack unwind information not available. Following frames may be wrong.
016ffac0 00ec610d c0000005 016ffaf0 016ffaf4 OculusSetup+0x614f
016ffae4 00ec621d c0000005 00000000 00000000 OculusSetup+0x610d
016ffaf8 00ec2a63 c0000005 2d0f37ba 00ec2a6c OculusSetup+0x621d
016ffb38 76225d49 015c7000 76225d30 016ffba0 OculusSetup+0x2a63
016ffb48 7772d6db 015c7000 21fde10a 00000000 kernel32!BaseThreadInitThunk+0x19
016ffba0 7772d661 ffffffff 77774677 00000000 ntdll!__RtlUserThreadStart+0x2b
016ffbb0 00000000 00ec2a6c 015c7000 00000000 ntdll!_RtlUserThreadStart+0x1b
STACK_COMMAND: ~0s; .ecxr ; kb
SYMBOL_NAME: OculusSetup+614f
MODULE_NAME: OculusSetup
IMAGE_NAME: OculusSetup.exe
FAILURE_BUCKET_ID: BREAKPOINT_80000003_OculusSetup.exe!Unknown
OS_VERSION: 10.0.26100.1
BUILDLAB_STR: ge_release
OSPLATFORM_TYPE: x86
OSNAME: Windows 10
IMAGE_VERSION: 1.103.0.0
FAILURE_ID_HASH: {2146e253-ac70-9b24-fa2e-cb451b020aca}
Followup: MachineOwner
---------
0:000> .ecxr
.ecxr
Minidump doesn't have an exception context
Unable to get exception context, HRESULT 0x80004002
0:000> kv
kv
# ChildEBP RetAddr Args to Child
00 016ff9a8 776f4104 ffffffff c0000005 00000001 ntdll!NtTerminateProcess+0xc (FPO: [2,0,0])
01 016ffa84 5d7838b4 c0000005 00000000 c0000005 ntdll!RtlExitUserProcess+0x184 (FPO: [1,47,4])
02 016ffa98 5d781cbd 016ffab4 7623b113 c0000005 AcLayers!NS_FaultTolerantHeap::FthExitUserProcess+0x92 (FPO: [0,0,0])
03 016ffaa0 7623b112 c0000005 77e8f3b0 ffffffff AcLayers!NS_FaultTolerantHeap::APIHook_RtlExitUserProcess+0xd (FPO: [Non-Fpo])
04 016ffab4 00ec614f c0000005 016ffae4 00ec610d kernel32!ExitProcessImplementation+0x12 (FPO: [1,0,0])
WARNING: Stack unwind information not available. Following frames may be wrong.
05 016ffac0 00ec610d c0000005 016ffaf0 016ffaf4 OculusSetup+0x614f
06 016ffae4 00ec621d c0000005 00000000 00000000 OculusSetup+0x610d
07 016ffaf8 00ec2a63 c0000005 2d0f37ba 00ec2a6c OculusSetup+0x621d
08 016ffb38 76225d49 015c7000 76225d30 016ffba0 OculusSetup+0x2a63
09 016ffb48 7772d6db 015c7000 21fde10a 00000000 kernel32!BaseThreadInitThunk+0x19 (FPO: [Non-Fpo])
0a 016ffba0 7772d661 ffffffff 77774677 00000000 ntdll!__RtlUserThreadStart+0x2b (FPO: [Non-Fpo])
0b 016ffbb0 00000000 00ec2a6c 015c7000 00000000 ntdll!_RtlUserThreadStart+0x1b (FPO: [Non-Fpo])
0:000> lm
lm
start end module name
00ec0000 0134e000 OculusSetup (no symbols)
5d750000 5d9e1000 AcLayers (pdb symbols) C:\ProgramData\Dbg\sym\AcLayers.pdb\A9EFBD42BB4C7B8779CE24F07478717B1\AcLayers.pdb
5dc60000 5dc6f000 SortWindows61 (deferred)
5dc80000 5dd2e000 apphelp (deferred)
74db0000 74dc5000 kernel_appcore (deferred)
74eb0000 74eb8000 version (deferred)
757b0000 7586c000 rpcrt4 (deferred)
75870000 75893000 gdi32 (deferred)
758a0000 7591f000 advapi32 (deferred)
75930000 75936000 psapi (deferred)
75940000 75a3b000 WinTypes (deferred)
75a40000 75a5a000 win32u (deferred)
75ac0000 75b43000 sechost (deferred)
75b50000 75c60000 ucrtbase (deferred)
75c70000 75c95000 imm32 (deferred)
75f30000 761ff000 KERNELBASE (pdb symbols) C:\ProgramData\Dbg\sym\wkernelbase.pdb\D74C540C07E2D4B812A7EF18CA5B91E51\wkernelbase.pdb
76210000 76300000 kernel32 (pdb symbols) C:\ProgramData\Dbg\sym\wkernel32.pdb\8CE9CC4291AAB1AEEB0118B62B372B721\wkernel32.pdb
76310000 7693b000 shell32 (deferred)
76940000 76a2c000 gdi32full (deferred)
76ae0000 76d72000 combase (private pdb symbols) C:\ProgramData\Dbg\sym\combase.pdb\EF07065F6A3620D521CF2F56D8D3DC0C1\combase.pdb
76d80000 76f4f000 user32 (pdb symbols) C:\ProgramData\Dbg\sym\wuser32.pdb\BD4DED58050122E02F6F862F8AFC05611\wuser32.pdb
76ff0000 77042000 shlwapi (deferred)
77050000 770c4000 bcryptPrimitives (deferred)
770d0000 77155000 msvcp_win (deferred)
77260000 77327000 msvcrt (deferred)
77330000 77400000 SHCore (deferred)
776b0000 776ba000 wow64cpu (deferred)
776c0000 7787f000 ntdll (pdb symbols) C:\ProgramData\Dbg\sym\wntdll.pdb\A4DBABCFAA96474627D72F516801A54A1\wntdll.pdb
0:000> .logclose
.logclose