Defrag Tools (HD) - Channel 9

In this episode of Defrag Tools, we talk about Windows Update and Windows Setup. We describe the different technologies, what each does to download the software, prepare the installation, and finish the installation. In the next episode, we'll dive deep into the logs, showing you how to troubleshoot an installation issue.

In this episode of Defrag Tools, we talk about HRESULT based Error Codes. The 32bits in the HRESULT have meanings, allowing the reader to gain additional insights into the error. Of note: The 32nd bit (the top bit) indicates if an error occurred or not. This is why errors are 0x8xxxxxxx.The 16-26 bits are the Facility - the originating API (Win32, CLR, XAML, etc.).The 0-15 bits are the (Error) Code. Common NULL Facility Error Codes NameDescriptionValueS_OKOperation successful0x00000000S_FALSEOperation successful but returned no results0x00000001E_ABORTOperation aborted0x80004004E_FAILUnspecified failure0x80004005E_NOINTERFACENo such interface supported0x80004002E_NOTIMPLNot implemented0x80004001E_POINTERPointer that is not valid0x80004003E_UNEXPECTEDUnexpected failure0x8000FFFFCommon Win32 Facility Error Codes These are built by passing a System Error Code to HRESULT_FROM_WIN32 NameDescriptionValueE_ACCESSDENIEDGeneral access denied error0x80070005E_HANDLEHandle that is not valid0x80070006E_INVALIDARGOne or more arguments are not valid0x80070057E_OUTOFMEMORYFailed to allocate necessary memory0x8007000ERelated Links: HRESULTHRESULT Facility – By ValueHRESULT Facility – By Name

In this episode of Defrag Tools, Chad Beeder is joined by Jorge Novillo and Ojasvi Choudhary to discuss the Performance Power Slider in Windows 10. We discuss how it works, how hardware partners can customize it, and how users can adjust some of its settings. Related Links: Overview & how to customize the default Perf Power Slider positionMicrosoft DocsPerf Power Slider Knob 1 – Processor TuningProcessor Power Management TuningPerformance Energy Preference TuningPerf Power Slider Knob 2 – Power Throttling background appsApp developers can define power throttling levels using the SetProcessInformation functionWindows blogHow to customize fan speeds, thermals, or other power settings for each slider positionINF AddPowerSetting DirectiveWinHEC Fall 2017 Power Lab (exercise 2D)Timeline: [00:00] Overview of the Performance Power Slider[02:54] Performance Power Slider on AC and DC power[04:02] Requirements to view the Performance Power Slider[04:49] Behind the scenes of the Performance Power Slider[07:22] Querying the custom processor settings[09:13] Power throttling user controls[14:14] How OEMs can customize the Performance Power Slider[19:25] Questions? Email us at [email protected]

Announcing the Inside Show, the show that takes you inside Windows! Inside covers Windows Features, Windows Internals, Exception Codes, Bugcheck Codes and Debugger Commands. Each episode is just 5 minutes, with no specific order between episodes. Watch the Welcome video! For longer topics (15-30min), we'll continue to cover them on Defrag Tools in 1 or more parts. Email questions, comments and requests to [email protected] and [email protected]

In this episode of Defrag Tools, Chad Beeder and Andrew Richards talk about what tech you could buy on Cyber Monday. We talk about USB Sticks, USB Cables, MicroSD Readers, International Power Adapters, Charging Stations, UPS Backup, Network Testers, Memory Sticks, Disk Drives, Drive adapters, Xbox Live, Xbox Game Pass, ... and many more things. For Intel Product Specs (to determine supported RAM, etc.), refer to http://ark.intel.com (Apologies for Andrew's poor voice)

In this episode of Defrag Tools, Chad Beeder and Andrew Richards talk to Marc Goodner and Reid Borsuk about the maker community at Microsoft, and the cool Ninjacat statue they built. Make sure to watch to the end to see all of its, shall we say... special features!

In this episode of Defrag Tools, Andrew Richards is joined by JCAB (Juan Carlos Arevalo Baeza) and Jordi Mola from the Windows Debugger team to demonstrate some more advanced usage of a new feature of WinDbg Preview: Time Travel Debugging (TTD). Related Links: WinDbg Preview (download from Microsoft Store)Time Travel Debugging Overview (Online documentation)Debugging Tools for Windows BlogTime Travel Debugging FAQ Timeline:[00:00] Introductions[01:07] Seeing a memory corruption crash in the Chakra Core when running a script. Difficult to debug![05:33] Now reproduce the same crash while recording a Time Travel Debugging trace[07:06] Looking at the TTD trace with unoptimized code[07:55] Use the !events command to list interesting events and exceptions in the trace and jump to them[11:43] Found the corrupt memory, step backwards to figure out where it came from.[13:15] Identifying the memory location containing a bad value with dx command, and setting a data breakpoint (with ba) to see who previously wrote to it.[17:37] Getting closer. Keep following the trail backwards...[19:29] Found where the bad value came from![21:08] Another use case: Find where a value is bad and track it back from there with a binary search (use !tt with a percentage value to jump to locations in the trace)[22:09] Second demo: Looking at the same crash but with optimized production code.[25:09] Exceptions will be hit when running the trace either forward or backward.[26:54] To give feedback on WinDbg Preview, use the Feedback Hub.

In this episode of Defrag Tools, Chad Beeder is joined by James Pinkerton and Ivette Carreras to introduce a new feature of WinDbg Preview: Time Travel Debugging (TTD). Related Links: WinDbg Preview (download from Microsoft Store)Time Travel Debugging Overview (Online documentation)Debugging Tools for Windows BlogTime Travel Debugging FAQ Timeline:[00:00] Introductions[00:54] Introducing Time Travel Debugging (TTD)[05:06] Tracing[07:33] Debugging Forwards[09:23] Debugging Backwards![13:31] Data is available[17:20] Great for Customer Support[19:11] Email us at [email protected]

In this episode of Defrag Tools, we continue our series on the new WinDbg Preview. Andrew Richards is joined by Bill Messmer to talk about the updated scripting engine. Related Links: WinDbg Preview (download from Microsoft Store)Documentation for WinDbg Preview (Dev Center)Announcement blog post Related Episodes: Defrag Tools #138 - Debugging - 'dx' Command Part 1Defrag Tools #139 - Debugging - 'dx' Command Part 2Defrag Tools #169 - Debugging Tools For Windows TeamDefrag Tools #170 - Debugger - JavaScript ScriptingDefrag Tools #182 - WinDbg Preview Part 1Defrag Tools #183 - WinDbg Preview Part 2

In this episode of Defrag Tools, Chad Beeder is joined by Nickolay Ratchev and Tim Misiak to show off some features of WinDbg Preview, a new version of the WinDbg tool. Also see our previous episode, if you missed it: Defrag Tools #182 - WinDbg Preview Part 1 Related Links: WinDbg Preview (download from Microsoft Store)Documentation for WinDbg Preview (Dev Center)Announcement blog post Timeline: [00:00] Welcome and introductions[00:42] Recent targets - every debugging session is saved for easy access next time[01:44] New features of the locals window and watch window: Use LINQ expressions[03:22] Model window allows different views (i.e. grid)[04:05] Demo: Use a NatVis script to modify how data is shown in the Model window. JavaScript supported as well.[06:00] New interactions between windows, new features in Command window... better copy & paste[08:15] Right-click to search on MSDN[08:58] Use the Feedback Hub for bug reports and feature requests!