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Windows Sysinternals

The Sysinternals web site was created in 1996 by Mark Russinovich and Bryce Cogswell to host their advanced system utilities and technical information. Whether you’re an IT Pro or a developer, you’ll find Sysinternals utilities to help you manage, troubleshoot and diagnose your Windows systems and applications.

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Solution Accelerators

Microsoft Solution Accelerators are a collection of fully supported tools, scripts, models, and best practices to proactively plan, integrate, and operate IT systems.

Sysinternals Live

Sysinternals Live is a service that enables you to execute Sysinternals tools directly from the Web without hunting for and manually downloading them. Simply enter a tool's Sysinternals Live path into Windows Explorer or a command prompt as http://live.sysinternals.com/<toolname> or  \\live.sysinternals.com\tools\<toolname>.

You can view the entire Sysinternals Live tools directory in a browser at http://live.sysinternals.com.

What's New What's New

What's New (November15, 2012)

  • Contig v1.7
    Contig is a command-line file defragmentation and fragmentation analysis utility. v1.7 has more detailed fragmentation analysis reporting, fixes a bug that enables creation of contiguous files larger than 8GB, and adds support for setting the valid data length on files to avoid zero-fill overhead.
  • CoreInfo v3.2
    Coreinfo, a command-line utility that dumps processor topology and feature support, now reports the presence of many additional features, including SMAP, RDSEED, BMI1, ADX, HLE, RTM, and INVPCID.
  • ProcDump v5.1
    This major update to Procdump, a command-line utility for creating process crash dump files based on triggers or on-demand, adds support for Silverlight applications and the ability to register Procdump as the just-in-time (JIT) debugger for more advanced scenarios.

What's New (October 17, 2012)

  • Desktops v2.0
    Desktops, a virtual desktop utility for Windows that lets you create up to three additional workspaces, is now compatible with Windows 8, properly supporting Winkey hotkey sequences (like Winkey+R to bring up the Run dialog) on alternate desktops and switching back to the primary desktop’s start screen when you hit Winkey.
  • Livekd v5.3
    LiveKd, a command-line utility that enables you to use the Windows kernel debuggers to examine live systems as well as virtual machines, now supports Windows 8.
  • Coreinfo v3.1
    This update to Coreinfo, a command line utility that reports detailed information about a system’s processor topology, CPU features, and cache topology, fixes a bug affecting the calculation of NUMA node costs and adds support for several more processor features, including RDRAND, LAHF/SAHF, Prefetchw and Intel Speedstep.

What's New (October 3, 2012)

  • Mark Talks Sysinternals History on Defrag Tools
    Defrag Tools, a Channel 9 series that features diagnostic and troubleshooting utilities including Sysinternals tools, invited Mark on to talk about how Sysinternals started, the evolution of the tools and how Mark decides when to add features and write new tools.
  • Windows Internals 6th Edition, Part 2 Published
    Part 2 of Windows Internals 6th Edition, is now available. The 6th edition covers kernel and system changes in Windows 7 and Windows Server 2008 R2 and adds 250 pages of expanded feature coverage and hand-on experiments.
  • PsPing v1.0
    PsPing is a new Sysinternals PsTools command-line utility for measuring network performance. In addition to standard ICMP ping functionality, it can report the latency of connecting to TCP ports, the latency of TCP round-trip communication between systems, and the TCP bandwidth available to a connection between systems. Besides obtaining min, max, and average values in 0.01ms resolution, you can also use PsPing to generate histograms of the results that are easy to import into spreadsheets.

What's New (September 10, 2012)

  • Mark Publishes New Technothriller: Trojan Horse
    Mark’s sequel to his popular debut technothriller Zero Day is now available in ebook and hard cover. Watch the video trailer and read the reviews on Mark’s website.
  • ProcDump v5.0
    Procdump is an advanced utility for capturing process memory dumps based on a variety of triggers including CPU usage, memory usage, performance counter values, and exceptions. Version 5.0 is a major upgrade that adds the ability to configure exception filters based on managed and native exception types, extends support to Windows 8 modern applications, and integrates with Process Monitor’s debug output logging.
  • Sigcheck v1.8
    This update to Sigcheck, a command-line file version and digital signature verification utility, shows detailed certificate information such as certificate usage, validity dates, and thumbprints, and also shows a file’s counter-signing chain if it has one.

What's New (August 2, 2012)

  • AccessChk v5.1
    This update to AccessChk, a command-line utility that shows the security settings and effective access on many object types, including registry keys and files, now reports Windows 8 claims and capabilities, shows the token of processes running as local system, lists security descriptor flags, and checks for remote interactive logon rights.
  • Whois v1.1
    Whois is a command-line utility that looks up domain name registration information. This release fixes a bug that could cause an infinite loop and a command-line option, -v, that prints verbose information about domain registration referrals.

What's New (July 16, 2012)

  • Mark’s Blog: The Case of the Veeerrry Slow Logons
    Mark’s latest troubleshooting blog post documents how he used Process Monitor to fix a problem with slow logons he started experiencing while travelling at the TechEd North America conference.
  • ZoomIt v4.3
    This update to ZoomIt, a screen magnification and annotation utility, adds an option that enables you to configure it to automatically start when you login.

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