Announcing the availability of a standalone legacy 1394 OHCI (FireWire) package

By Koichi Hirao [MSFT] We are pleased to announce the immediate availability of a standalone legacy 1394 OHCI (FireWire) package for Windows 8/8.1. Starting with Windows 7, we’ve been providing native support for a 1394 driver stack that is based on the Windows Driver Framework (WDF).  And this driver stack supports the legacy 1394 (aka…

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Help! After installing Windows 8.1, my device fails with error code 19

Authored by Eliyas Yakub [MSFT] One of the common issues reported in Microsoft answer forum for devices and drivers is: after upgrading to Windows 8.1 or installing software package from a third-party Web site, some devices fail with error code 19 (shown in Device Manager). The error code description is “Windows cannot start this hardware…

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Why does my USB device work on Windows 8.0 but fail on Windows 8.1 with code 43?

Authored by Martin Borve [MSFT] Updated 1/27/2014 by Philip Ries to show how to use Message Analyzer and its latest parsers to more easily diagnose the problem. Updated 7/10/2014 by Vivek Gupta to include the Workaround information. A few USB devices when connected to a port of an Enhanced Host Controller (EHCI) might not enumerate…

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Link Power Management (LPM) in USB 2.0

Authored by Vivek Gupta [MSFT] In this blog, I’ll provide an overview of the USB 2.0 Link Power Management (LPM) feature and how it can be used with the Selective Suspend mechanism to reduce system power consumption. I’ll also describe the common pitfalls in LPM implementation in USB controllers and devices. Finally, I’ll describe the…

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