How L1 Terminal Fault (L1TF) Mitigation and WinDbg Wasted My Morning (a.k.a. Yak Shaving: WinDbg Edition) osr.com/blog/2019/07/0…

Unexpected FltGetFileNameInformation Behavior for Network Renames (oh, and Tunnel Caching too) osr.com/blog/2019/08/1…

No travel budget or inability to travel at all? OSR's next WDF seminar (October 21-25) will include an option to register and attend ONLINE! osr.com/seminars/wdf-d…

You heard it here first! The Sept-Oct 2019 issue of The NT Insider is now available! insider.osr.com/2019/ntinsider…

OSR Seminar Update (New Dates + Remote Attendance!) - mailchi.mp/osr/osr-semina…

Tracking down a Win10 watchdog violation BSOD and wanted to see the current processor's interrupt objects sorted by CPU time. Figured I'd do it with LINQ...Blacked out and when I came to I was staring at a working command

OSR Seminar Update (Feb2020) - mailchi.mp/osr/osr-semina…

Attend OSR's WDF or Minifilter Seminars Remotely - mailchi.mp/osr/attend-osr…

Driver Devs: DO NOT update VS 2019 beyond 16.4.0, or you risk breaking the WDK, to the point that it won’t compile anything when Code Analysis is enabled (and you can’t subsequently turn off Code Analysis). Details here: osr.com/blog/2020/03/3…

The WDK for 20H1 defines new functions for auto-zeroing pool allocations, such as ExAllocarePoolZero. But... a serious WDK bug causses security vulnerability and crashes when using these functions on Windows 1909. See more at osr.com/blog/2020/07/1…

Microsoft: No more driver updates to be allowed for Win 7, Win 8, and Win 8.1 -- Cross-Signing will be discontinued. I wish I were joking. We HAVE to push back on this and get them to change the plan. osr.com/blog/2020/10/1…

Upcoming Online Seminars from OSR - mailchi.mp/osr/upcoming-o…

The Sept-Oct 2020 issue of The NT Insider is now available! - mailchi.mp/osr/dp3ddrrqgc

MSFT has released mitigations for the ExAllocatePoolZero security vulnerabilities we discovered in July. An updated WDK/EWDK has replaced the original that had the bug, and OS changes have been made as well. For details see our blog post: osr.com/blog/2021/01/0…

NTFS VULNERABILITY CRITICALITY UNDERESTIMATED - There is a specially nasty vulnerability in NTFS right now. Triggerable by opening special crafted name in any folder anywhere.' The vulnerability will instant pop up complaining about yuor harddrive is corrupted when path is opened

The NTFS :$I30:$Bitmap bug found by Jonas L is super weird and annoying...FIFY: osr.com/blog/2021/01/2… (source + binaries github.com/OSRDrivers/i30…)

OSR's File System Minifilter and WDF Seminar Schedule - mailchi.mp/osr/osrs-file-…

OSR's 2022 Public Seminar Schedule (Q1/Q2) - mailchi.mp/osr/osr-2022-s…

Driver Verifier, everyone's favorite tool for driver quality, is effectively broken in Windows 11. Seriously. osr.com/blog/2024/05/0…

Update regarding Driver Verifier not working in Windows 11: It seems like this "not working" behavior is restricted to when you enable DV via the GUI interface. If you use the command line it works as it should! Updated blog post: osr.com/blog/2024/05/0…