Microsoft Edge Try Microsoft Edge A fast and secure browser that's designed for Windows 10 Get started

Skip to main content
Microsoft
Microsoft Support
  • Office
  • Windows
  • Surface
  • Xbox
  • Deals
  • Support
      • Windows apps
      • OneDrive
      • Outlook
      • Skype
      • OneNote
      • PCs & tablets
      • Accessories
      • VR & mixed reality
      • Microsoft HoloLens
      • Xbox games
      • PC games
      • Windows digital games
      • Movies & TV
      • Books
      • Microsoft Azure
      • Microsoft Dynamics 365
      • Microsoft 365
      • Cloud platform
      • Enterprise
      • Data platform
      • .NET
      • Visual Studio
      • Windows Dev Center
      • Docs
      • Microsoft Store
      • Free downloads & security
      • Education
      • Store locations
      • Gift cards
    • View all
    0
    Sign in
    Microsoft Support

    USB storage device cannot be recognized or mounted on a computer that is running Windows 7 or Windows Server 2008 R2

    Content provided by Microsoft

    Content provided by Microsoft

    Applies to: Windows 7 EnterpriseWindows 7 Home BasicWindows 7 Home PremiumWindows 7 ProfessionalWindows 7 StarterWindows 7 UltimateWindows Server 2008 R2 DatacenterWindows Server 2008 R2 EnterpriseWindows Server 2008 R2 for Itanium-Based SystemsWindows Server 2008 R2 FoundationWindows Server 2008 R2 StandardWindows Web Server 2008 R2 More


    Symptoms


    Consider the following scenario:
    • You enable BitLocker Drive Encryption on a USB storage device that is connected to a Windows 7-based or a Windows Server 2008 R2-based computer.
    • When you run BitLocker To Go on the USB storage device, one of the following situations occurs and leads to an NTFS unexpected shutdown (also known as a dirty shutdown):
      • You disconnect the USB device without ejecting it.
      • The computer encounters a hard restart or shutdown, or encounters a power failure.
    In this scenario, the USB storage device cannot be recognized or mounted on the computer. Additionally, when you run the Manage-bde.exe command on the removable storage device, the following error message is received:
    ERROR: An error occurred (code 0x80070020):
    The process cannot access the file because it is being used by another process.

    Cause


    This issue occurs because the virtualized boot block on the storage is created at a random location. Therefore, the virtualized boot block is overwritten by other files incorrectly.

    Resolution


    Update information

    How to obtain this update

    Microsoft Update
    This update is available from the Windows Update website.
    Microsoft Download Center
    The following files are available for download from the Microsoft Download Center:
    Operating systemUpdate
    All supported x86-based versions of Windows 7Download Download the update package now.
    All supported x64-based versions of Windows 7Download Download the update package now.
    All supported x64-based versions of Windows Server 2008 R2Download Download the update package now.
    All supported IA-64-based versions of Windows Server 2008 R2Download Download the update package now.
    For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
    119591 How to obtain Microsoft support files from online services
    Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

    Prerequisites

    To apply this hotfix, you must be running one of the following operating systems:
    • Windows 7
    • Windows 7 Service Pack 1 (SP1)
    • Windows Server 2008 R2
    • Windows Server 2008 R2 Service Pack 1 (SP1)
    For more information about how to obtain a Windows 7 or Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

    976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

    Registry information

    To apply this hotfix, you do not have to make any changes to the registry.

    Restart requirement

    You must restart the computer after you apply this hotfix.

    Hotfix replacement information

    This hotfix does not replace a previously released hotfix.
    File information
    The global version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.
    Windows 7 and Windows Server 2008 R2 file information notes
    Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.
    • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:
      VersionProductMilestoneService branch
      6.1.760
      0.16xxx
      Windows 7 and Windows Server 2008 R2RTMGDR
      6.1.760
      0.21xxx
      Windows 7 and Windows Server 2008 R2RTMLDR
      6.1.760
      1.18xxx
      Windows 7 and Windows Server 2008 R2SP1GDR
      6.1.760
      1.22xxx
      Windows 7 and Windows Server 2008 R2SP1LDR
    • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.
    • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows 7 and for Windows Server 2008 R2" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.
    For all supported x86-based versions of Windows 7
    File nameFile versionFile sizeDateTimePlatform
    Dumpfve.sys6.1.7600.1638555,58414-Jul-200901:17x86
    Fvevol.sys6.1.7600.17221195,81624-Jan-201304:51x86
    Dumpfve.sys6.1.7600.1638555,58414-Jul-200901:17x86
    Fvevol.sys6.1.7600.21432196,32824-Jan-201304:53x86
    Dumpfve.sys6.1.7600.1638555,58414-Jul-200901:17x86
    Fvevol.sys6.1.7601.18062196,32824-Jan-201304:47x86
    Dumpfve.sys6.1.7600.1638555,58414-Jul-200901:17x86
    Fvevol.sys6.1.7601.22230196,32824-Jan-201304:28x86
    For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
    File nameFile versionFile sizeDateTimePlatform
    Dumpfve.sys6.1.7600.1638555,12814-Jul-200901:43x64
    Fvevol.sys6.1.7600.17221223,75224-Jan-201305:41x64
    Dumpfve.sys6.1.7600.1638555,12814-Jul-200901:43x64
    Fvevol.sys6.1.7600.21432223,75224-Jan-201305:41x64
    Dumpfve.sys6.1.7600.1638555,12814-Jul-200901:43x64
    Fvevol.sys6.1.7601.18062223,75224-Jan-201306:01x64
    Dumpfve.sys6.1.7600.1638555,12814-Jul-200901:43x64
    Fvevol.sys6.1.7601.22230223,76824-Jan-201305:28x64
    For all supported IA-64-based versions of Windows Server 2008 R2
    File nameFile versionFile sizeDateTimePlatform
    Dumpfve.sys6.1.7600.1638582,24814-Jul-200901:52IA-64
    Fvevol.sys6.1.7600.17221483,55224-Jan-201304:52IA-64
    Dumpfve.sys6.1.7600.1638582,24814-Jul-200901:52IA-64
    Fvevol.sys6.1.7600.21432484,06424-Jan-201304:50IA-64
    Dumpfve.sys6.1.7600.1638582,24814-Jul-200901:52IA-64
    Fvevol.sys6.1.7601.18062484,08024-Jan-201304:41IA-64
    Dumpfve.sys6.1.7600.1638582,24814-Jul-200901:52IA-64
    Fvevol.sys6.1.7601.22230484,06424-Jan-201304:32IA-64

    Status


    Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

    More Information


    For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

    824684 Description of the standard terminology that is used to describe Microsoft software updates

    Additional file information

    Additional file information for Windows 7 and for Windows Server 2008 R2

    Additional files for all supported x86-based versions of Windows 7
    File nameX86_0e6ef9db05314fefc2dbcdfe668474b1_31bf3856ad364e35_6.1.7601.22230_none_b1a4970369362aa3.manifest
    File versionNot applicable
    File size714
    Date (UTC)24-Jan-2013
    Time (UTC)22:49
    PlatformNot applicable
    File nameX86_2a6b39c5403a13d59b4c33d7de1cce8d_31bf3856ad364e35_6.1.7600.17221_none_75e1799c0df7b7f0.manifest
    File versionNot applicable
    File size714
    Date (UTC)24-Jan-2013
    Time (UTC)22:49
    PlatformNot applicable
    File nameX86_640ee2fe98bc32065df3331a6b5e87e1_31bf3856ad364e35_6.1.7601.18062_none_61369a388def277c.manifest
    File versionNot applicable
    File size714
    Date (UTC)24-Jan-2013
    Time (UTC)22:49
    PlatformNot applicable
    File nameX86_66d258cacdab0bf86057f077ddb0ed8a_31bf3856ad364e35_6.1.7600.21432_none_a94ff2d3d4f02282.manifest
    File versionNot applicable
    File size714
    Date (UTC)24-Jan-2013
    Time (UTC)22:49
    PlatformNot applicable
    File nameX86_microsoft-windows-s..tartup-filterdriver_31bf3856ad364e35_6.1.7600.17221_none_2e97935141145286.manifest
    File versionNot applicable
    File size35,383
    Date (UTC)24-Jan-2013
    Time (UTC)22:52
    PlatformNot applicable
    File nameX86_microsoft-windows-s..tartup-filterdriver_31bf3856ad364e35_6.1.7600.21432_none_2f1762605a3924bf.manifest
    File versionNot applicable
    File size35,383
    Date (UTC)24-Jan-2013
    Time (UTC)22:52
    PlatformNot applicable
    File nameX86_microsoft-windows-s..tartup-filterdriver_31bf3856ad364e35_6.1.7601.18062_none_3053b0f13e5a478d.manifest
    File versionNot applicable
    File size35,383
    Date (UTC)24-Jan-2013
    Time (UTC)22:52
    PlatformNot applicable
    File nameX86_microsoft-windows-s..tartup-filterdriver_31bf3856ad364e35_6.1.7601.22230_none_30fbbed257615dfd.manifest
    File versionNot applicable
    File size35,383
    Date (UTC)24-Jan-2013
    Time (UTC)22:52
    PlatformNot applicable
    Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
    File nameAmd64_08ae60542d6498c835fcb14b98629223_31bf3856ad364e35_6.1.7600.21432_none_bd57445a838be289.manifest
    File versionNot applicable
    File size718
    Date (UTC)24-Jan-2013
    Time (UTC)22:49
    PlatformNot applicable
    File nameAmd64_1b1a122ae4155daceb8549a97531a576_31bf3856ad364e35_6.1.7601.18062_none_87494051e6d620d0.manifest
    File versionNot applicable
    File size718
    Date (UTC)24-Jan-2013
    Time (UTC)22:49
    PlatformNot applicable
    File nameAmd64_b0eb20980b94ea6ded98b03dfbc9e855_31bf3856ad364e35_6.1.7600.17221_none_4dfa9242cf8f803b.manifest
    File versionNot applicable
    File size718
    Date (UTC)24-Jan-2013
    Time (UTC)22:49
    PlatformNot applicable
    File nameAmd64_cdec8e4c241d347be214eea8a628418b_31bf3856ad364e35_6.1.7601.22230_none_c288eaaba7849758.manifest
    File versionNot applicable
    File size718
    Date (UTC)24-Jan-2013
    Time (UTC)22:49
    PlatformNot applicable
    File nameAmd64_microsoft-windows-s..tartup-filterdriver_31bf3856ad364e35_6.1.7600.17221_none_8ab62ed4f971c3bc.manifest
    File versionNot applicable
    File size35,387
    Date (UTC)24-Jan-2013
    Time (UTC)22:55
    PlatformNot applicable
    File nameAmd64_microsoft-windows-s..tartup-filterdriver_31bf3856ad364e35_6.1.7600.21432_none_8b35fde4129695f5.manifest
    File versionNot applicable
    File size35,387
    Date (UTC)24-Jan-2013
    Time (UTC)22:55
    PlatformNot applicable
    File nameAmd64_microsoft-windows-s..tartup-filterdriver_31bf3856ad364e35_6.1.7601.18062_none_8c724c74f6b7b8c3.manifest
    File versionNot applicable
    File size35,387
    Date (UTC)24-Jan-2013
    Time (UTC)22:55
    PlatformNot applicable
    File nameAmd64_microsoft-windows-s..tartup-filterdriver_31bf3856ad364e35_6.1.7601.22230_none_8d1a5a560fbecf33.manifest
    File versionNot applicable
    File size35,387
    Date (UTC)24-Jan-2013
    Time (UTC)22:55
    PlatformNot applicable
    Additional files for all supported IA-64-based versions of Windows Server 2008 R2
    File nameIa64_368d1d57e928529bd03338f2c26c5558_31bf3856ad364e35_6.1.7601.18062_none_1428a98c48a5ba4d.manifest
    File versionNot applicable
    File size716
    Date (UTC)24-Jan-2013
    Time (UTC)22:49
    PlatformNot applicable
    File nameIa64_a945d780d0c1bd63ab09aa1bfa0b0251_31bf3856ad364e35_6.1.7601.22230_none_7ef15710eafb9bb6.manifest
    File versionNot applicable
    File size716
    Date (UTC)24-Jan-2013
    Time (UTC)22:49
    PlatformNot applicable
    File nameIa64_ca33786ff57340bdeede57f0732ffb65_31bf3856ad364e35_6.1.7600.17221_none_c15f360034003294.manifest
    File versionNot applicable
    File size716
    Date (UTC)24-Jan-2013
    Time (UTC)22:49
    PlatformNot applicable
    File nameIa64_f582916cd4648777de25d7788d71ad45_31bf3856ad364e35_6.1.7600.21432_none_1993a278fe505c7c.manifest
    File versionNot applicable
    File size716
    Date (UTC)24-Jan-2013
    Time (UTC)22:49
    PlatformNot applicable
    File nameIa64_microsoft-windows-s..tartup-filterdriver_31bf3856ad364e35_6.1.7600.17221_none_2e99374741125b82.manifest
    File versionNot applicable
    File size35,385
    Date (UTC)24-Jan-2013
    Time (UTC)22:49
    PlatformNot applicable
    File nameIa64_microsoft-windows-s..tartup-filterdriver_31bf3856ad364e35_6.1.7600.21432_none_2f1906565a372dbb.manifest
    File versionNot applicable
    File size35,385
    Date (UTC)24-Jan-2013
    Time (UTC)22:49
    PlatformNot applicable
    File nameIa64_microsoft-windows-s..tartup-filterdriver_31bf3856ad364e35_6.1.7601.18062_none_305554e73e585089.manifest
    File versionNot applicable
    File size35,385
    Date (UTC)24-Jan-2013
    Time (UTC)22:49
    PlatformNot applicable
    File nameIa64_microsoft-windows-s..tartup-filterdriver_31bf3856ad364e35_6.1.7601.22230_none_30fd62c8575f66f9.manifest
    File versionNot applicable
    File size35,385
    Date (UTC)24-Jan-2013
    Time (UTC)22:49
    PlatformNot applicable


    Last Updated: Apr 9, 2013
    • Email
    • Print
    Thanks! Your feedback will help us improve the support experience.

    Support

    Support

    • Find downloads
    • Account support
    • Supported products list
    • Microsoft Lifecycle Policy

    Security

    Security

    • Safety & Security Center
    • Download Security Essentials
    • Malicious Software Removal Tool

    Contact us

    Contact us

    • Report a support scam
    • Contact Microsoft Support
    • Locate Microsoft addresses worldwide
    This site in other countries/regions
    Algérie - Français
    Argentina - Español
    Australia - English
    Belgique - Français
    België - Nederlands
    Bolivia - Español
    Bosna i Hercegovina - Hrvatski
    Brasil - Português
    Canada - English
    Canada - Français
    Chile - Español
    Colombia - Español
    Costa Rica - Español
    Crna Gora - Srpski
    Danmark - Dansk
    Deutschland - Deutsch
    Dominican Republic - Español
    Ecuador - Español
    Eesti - Eesti
    El Salvador - Español
    España - Español
    Estados Unidos - Español
    France - Français
    Guatemala - Español
    Hong Kong SAR - English
    Hrvatska - Hrvatski
    India - English
    Indonesia (Bahasa) - Bahasa
    Ireland - English
    Italia - Italiano
    Latvija - Latviešu
    Lietuva - Lietuvių
    Luxembourg - Français
    Magyarország - Magyar
    Malaysia - English
    Maroc - Français
    México - Español
    Nederland - Nederlands
    New Zealand - English
    Norge - Bokmål
    Panamá - Español
    Paraguay - Español
    Perú - Español
    Philippines - English
    Polska - Polski
    Portugal - Português
    Puerto Rico - Español
    România - Română
    Schweiz - Deutsch
    Singapore - English
    Slovenija - Slovenščina
    Slovensko - Slovenčina
    South Africa - English
    Srbija - Srpski
    Suisse - Français
    Suomi - Suomi
    Sverige - Svenska
    Tunisie - Français
    Türkiye - Türkçe
    United Kingdom - English
    United States - English
    Uruguay - Español
    Venezuela - Español
    Việt Nam - Tiếng việt
    Ísland - Íslenska
    Österreich - Deutsch
    Česká Republika - Čeština
    Ελλάδα - Ελληνικά
    България - Български
    Казахстан - Русский
    Россия - Русский
    Україна - Українська
    ישראל - עברית
    الإمارات العربية المتحدة - العربية
    المملكة العربية السعودية - العربية
    مصر - العربية
    भारत - हिंदी
    ไทย - ไทย
    中国 - 简体中文
    台灣 - 繁體中文
    日本 - 日本語
    香港特別行政區 - 繁體中文
    대한민국 - 한국어
    English (United States)
    • Terms of use
    • Privacy & cookies
    • Trademarks
    • © Microsoft 2018