"550 The process cannot access the file" error when you try to download a file in Windows

Applies To
Windows Server 2012 R2 Datacenter Windows Server 2012 R2 Standard Windows Server 2012 R2 Essentials Windows Server 2012 R2 Foundation Windows 8.1 Enterprise Windows 8.1 Pro Windows 8.1 Windows Server 2012 Datacenter Windows Server 2012 Datacenter Windows Server 2012 Standard Windows Server 2012 Standard Windows Server 2012 Essentials Windows Server 2012 Foundation Windows Server 2012 Foundation Windows 8 Enterprise Windows 8 Pro Windows 8 Windows Server 2008 R2 Service Pack 1 Windows Server 2008 R2 Datacenter Windows Server 2008 R2 Enterprise Windows Server 2008 R2 Standard Windows Server 2008 R2 Foundation Windows Server 2008 R2 for Itanium-Based Systems Windows 7 Service Pack 1 Windows 7 Ultimate Windows 7 Enterprise Windows 7 Professional Windows 7 Home Premium Windows 7 Home Basic Windows 7 Starter

This article describes an issue that occurs in the FTP service on a computer that is running Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7 Service Pack 1 (SP1), or Windows Server 2008 R2 SP1. A hotfix is available to resolve this issue. The hotfix has a prerequisite.

Symptoms

This issue occurs when you try to download a file while the file is still being written to, even if the application that is writing to the file has opened the file by specifying the FILE_SHARE_READ value for the sharing mode. When this issue occurs, you cannot download the file, and the FTP service returns an error message that resembles the following:

Note

550 The process cannot access the file because it is being used by another process.

Hotfix information

Important Do not install a language pack after you install this hotfix. If you do, the language-specific changes in the hotfix will not be applied, and you will have to reinstall the hotfix. For more information, see Add language packs to Windows.

 A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem.

If the hotfix is available for download, there is a "Hotfix Download Available" section at the top of this Knowledge Base article. If this section does not appear, submit a request to Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft website:

http:⁠//support.microsoft.com/contactus/?ws=support Note The "Hotfix Download Available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must have April 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 (2919355) installed in Windows 8.1 or Windows Server 2012 R2. Or, install Service Pack 1 for Windows 7 or Windows Server 2008 R2.

Registry information

To use the hotfix in this package, you do not have to make any changes to the registry.

Restart requirement

You may have to 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 8.1 and Windows Server 2012 R2 file information and note

Important Windows 8.1 hotfixes and Windows Server 2012 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 8.1/Windows Server 2012 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 MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are

    listed separately in the "Additional file information for Windows 8.1 and for Windows Server 2012 R2" section. MUM, MANIFEST, and the associated security catalog (.cat) files, are very important to maintain the state of the updated components. 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 8.1

File name File version File size Date Time Platform
Ftpconfigext.dll 8.5.9600.17725 16,896 11-Mar-2015 01:05 x86
Ftpctrlps.dll 8.5.9600.17725 10,240 11-Mar-2015 01:17 x86
Ftpmib.dll 8.5.9600.17725 10,752 11-Mar-2015 01:15 x86
Ftpres.dll 8.5.9600.16384 14,848 22-Aug-2013 04:16 x86
Ftpsvc.dll 8.5.9600.17725 344,064 11-Mar-2015 00:57 x86
Ftpsvc.mof Not applicable 69,990 21-Aug-2013 23:46 Not applicable

For all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2

File name File version File size Date Time Platform
Ftpconfigext.dll 8.5.9600.17725 19,968 11-Mar-2015 01:44 x64
Ftpctrlps.dll 8.5.9600.17725 14,848 11-Mar-2015 01:59 x64
Ftpmib.dll 8.5.9600.17725 13,312 11-Mar-2015 01:56 x64
Ftpres.dll 8.5.9600.16384 14,848 22-Aug-2013 11:44 x64
Ftpsvc.dll 8.5.9600.17725 393,216 11-Mar-2015 01:33 x64
Ftpsvc.mof Not applicable 69,990 22-Aug-2013 06:51 Not applicable

Windows 8 and Windows Server 2012 file information and note

Important Windows 8 hotfixes and Windows Server 2012 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 8/Windows Server 2012" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • 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, MANIFEST, and the associated security catalog (.cat) files, are very important to maintain the state of the updated components. 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 8

File name File version File size Date Time Platform
Ftpconfigext.dll 8.0.9200.16384 15,360 26-Jul-2012 03:18 x86
Ftpctrlps.dll 8.0.9200.16384 10,240 26-Jul-2012 03:18 x86
Ftpmib.dll 8.0.9200.16384 10,752 26-Jul-2012 03:18 x86
Ftpres.dll 8.0.9200.16384 14,848 26-Jul-2012 02:44 x86
Ftpsvc.dll 8.0.9200.21616 319,488 07-Sep-2015 15:17 x86
Ftpsvc.mof Not applicable 69,990 25-Jul-2012 20:18 Not applicable

For all supported x64-based versions of Windows 8 and of Windows Server 2012

File name File version File size Date Time Platform
Ftpconfigext.dll 8.0.9200.16384 17,920 26-Jul-2012 03:05 x64
Ftpctrlps.dll 8.0.9200.16384 14,336 26-Jul-2012 03:05 x64
Ftpmib.dll 8.0.9200.16384 13,312 26-Jul-2012 03:05 x64
Ftpres.dll 8.0.9200.16384 14,848 26-Jul-2012 02:34 x64
Ftpsvc.dll 8.0.9200.21616 369,664 07-Sep-2015 14:23 x64
Ftpsvc.mof Not applicable 69,990 25-Jul-2012 20:16 Not applicable

Windows 7 and Windows Server 2008 R2 file information and note

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 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, MANIFEST, and the associated security catalog (.cat) files, are very important to maintain the state of the updated components. 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 name File version File size Date Time Platform
Ftpconfigext.dll 7.5.7601.22982 16,384 05-Mar-2015 04:10 x86
Ftpctrlps.dll 7.5.7601.22982 9,728 05-Mar-2015 04:10 x86
Ftpmib.dll 7.5.7601.22982 10,240 05-Mar-2015 04:10 x86
Ftpres.dll 7.5.7601.22982 14,848 05-Mar-2015 04:06 x86
Ftpsvc.dll 7.5.7601.22982 310,272 05-Mar-2015 04:10 x86
Ftpsvc.mof Not applicable 69,252 05-Mar-2015 01:25 Not applicable

For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name File version File size Date Time Platform
Ftpconfigext.dll 7.5.7601.22982 18,432 05-Mar-2015 04:23 x64
Ftpctrlps.dll 7.5.7601.22982 13,824 05-Mar-2015 04:23 x64
Ftpmib.dll 7.5.7601.22982 12,800 05-Mar-2015 04:23 x64
Ftpres.dll 7.5.7601.22982 14,848 05-Mar-2015 04:19 x64
Ftpsvc.dll 7.5.7601.22982 351,232 05-Mar-2015 04:23 x64
Ftpsvc.mof Not applicable 69,252 05-Mar-2015 01:15 Not applicable

For all supported IA-64-based versions of Windows Server 2008 R2

File name File version File size Date Time Platform
Ftpconfigext.dll 7.5.7601.22982 40,960 05-Mar-2015 03:31 IA-64
Ftpctrlps.dll 7.5.7601.22982 22,528 05-Mar-2015 03:31 IA-64
Ftpmib.dll 7.5.7601.22982 23,552 05-Mar-2015 03:31 IA-64
Ftpres.dll 7.5.7601.22982 14,848 05-Mar-2015 03:27 IA-64
Ftpsvc.dll 7.5.7601.22982 786,432 05-Mar-2015 03:31 IA-64
Ftpsvc.mof Not applicable 69,252 05-Mar-2015 01:07 Not applicable

Additional file information

Additional file information for Windows 8.1 and for Windows Server 2012 R2

Additional files for all supported x86-based versions of Windows 8.1

File property Value
File name X86_88477c24b79c92385578f0352a6516ea_31bf3856ad364e35_6.3.9600.17725_none_5ff770c55b197b27.manifest
File version Not applicable
File size 698
Date (UTC) 11-Mar-2015
Time (UTC) 18:44
Platform Not applicable
File name X86_microsoft-windows-iis-ftpsvc_31bf3856ad364e35_6.3.9600.17725_none_df4cabbbb108f83e.manifest
File version Not applicable
File size 25,960
Date (UTC) 11-Mar-2015
Time (UTC) 18:48
Platform Not applicable

Additional files for all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2

File property Value
File name Amd64_4c334a7f318e7e5b0bdf61bacbd3b9cd_31bf3856ad364e35_6.3.9600.17725_none_840b577ca9139d62.manifest
File version Not applicable
File size 1,046
Date (UTC) 11-Mar-2015
Time (UTC) 18:44
Platform Not applicable
File name Amd64_microsoft-windows-iis-ftpsvc_31bf3856ad364e35_6.3.9600.17725_none_3b6b473f69666974.manifest
File version Not applicable
File size 25,966
Date (UTC) 11-Mar-2015
Time (UTC) 18:44
Platform Not applicable
File name Wow64_microsoft-windows-iis-ftpsvc_31bf3856ad364e35_6.3.9600.17725_none_45bff1919dc72b6f.manifest
File version Not applicable
File size 11,518
Date (UTC) 11-Mar-2015
Time (UTC) 02:14
Platform Not applicable

Additional file information for Windows 8 and for Windows Server 2012

Additional files for all supported x86-based versions of Windows 8

File property Value
File name Update.mum
File version Not applicable
File size 1,796
Date (UTC) 07-Sep-2015
Time (UTC) 20:09
Platform Not applicable
File name X86_45c1a58d100ee3357dacc59a34b0a8c1_31bf3856ad364e35_6.2.9200.21616_none_685dff9493f2bf6a.manifest
File version Not applicable
File size 698
Date (UTC) 07-Sep-2015
Time (UTC) 20:09
Platform Not applicable
File name X86_microsoft-windows-iis-ftpsvc_31bf3856ad364e35_6.2.9200.21616_none_47ed5c4a7feacaa3.manifest
File version Not applicable
File size 25,960
Date (UTC) 07-Sep-2015
Time (UTC) 20:13
Platform Not applicable

Additional files for all supported x64-based versions of Windows 8 and of Windows Server 2012

File property Value
File name Amd64_b087fa0c367f7370602f10d4508f20b2_31bf3856ad364e35_6.2.9200.21616_none_f2e8ac0ad63dacec.manifest
File version Not applicable
File size 1,046
Date (UTC) 07-Sep-2015
Time (UTC) 20:09
Platform Not applicable
File name Amd64_microsoft-windows-iis-ftpsvc_31bf3856ad364e35_6.2.9200.21616_none_a40bf7ce38483bd9.manifest
File version Not applicable
File size 25,966
Date (UTC) 07-Sep-2015
Time (UTC) 20:09
Platform Not applicable
File name Update.mum
File version Not applicable
File size 2,014
Date (UTC) 07-Sep-2015
Time (UTC) 20:09
Platform Not applicable
File name Wow64_microsoft-windows-iis-ftpsvc_31bf3856ad364e35_6.2.9200.21616_none_ae60a2206ca8fdd4.manifest
File version Not applicable
File size 11,518
Date (UTC) 07-Sep-2015
Time (UTC) 15:37
Platform Not applicable

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

Additional files for all supported x86-based versions of Windows 7

File property Value
File name X86_e4fb02832e7fb01c91d04ed77281e7c7_31bf3856ad364e35_6.1.7601.22982_none_6e54d57c40f84bd9.manifest
File version Not applicable
File size 698
Date (UTC) 05-Mar-2015
Time (UTC) 18:10
Platform Not applicable
File name X86_microsoft-windows-iis-ftpsvc_31bf3856ad364e35_6.1.7601.22982_none_4cae5c2b0d3b3de6.manifest
File version Not applicable
File size 29,360
Date (UTC) 05-Mar-2015
Time (UTC) 04:38
Platform Not applicable

Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File property Value
File name Amd64_b93790dbe7a40a5efb8702b6f12cedf6_31bf3856ad364e35_6.1.7601.22982_none_d9aeae6490df6469.manifest
File version Not applicable
File size 1,046
Date (UTC) 05-Mar-2015
Time (UTC) 18:11
Platform Not applicable
File name Amd64_microsoft-windows-iis-ftpsvc_31bf3856ad364e35_6.1.7601.22982_none_a8ccf7aec598af1c.manifest
File version Not applicable
File size 29,366
Date (UTC) 05-Mar-2015
Time (UTC) 04:48
Platform Not applicable
File name Wow64_microsoft-windows-iis-ftpsvc_31bf3856ad364e35_6.1.7601.22982_none_b321a200f9f97117.manifest
File version Not applicable
File size 11,568
Date (UTC) 05-Mar-2015
Time (UTC) 04:33
Platform Not applicable

Additional files for all supported IA-64-based versions of Windows Server 2008 R2

File property Value
File name Ia64_157ca3abf4ced819a8b64f4c9aa67d48_31bf3856ad364e35_6.1.7601.22982_none_8bde54fca1a45ba4.manifest
File version Not applicable
File size 1,044
Date (UTC) 05-Mar-2015
Time (UTC) 18:10
Platform Not applicable
File name Ia64_microsoft-windows-iis-ftpsvc_31bf3856ad364e35_6.1.7601.22982_none_4cb000210d3946e2.manifest
File version Not applicable
File size 29,363
Date (UTC) 05-Mar-2015
Time (UTC) 04:21
Platform Not applicable
File name Wow64_microsoft-windows-iis-ftpsvc_31bf3856ad364e35_6.1.7601.22982_none_b321a200f9f97117.manifest
File version Not applicable
File size 11,568
Date (UTC) 05-Mar-2015
Time (UTC) 04:33
Platform Not applicable

Status

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

References

See the terminology that Microsoft uses to describe software updates.