FIX: Error message when you browse a file that uses a custom MIME type in Internet Explorer 6 and Internet Explorer 7: "The file you are downloading cannot be opened by the default program"

Symptoms

Consider the following scenario:

  • In Internet Explorer, you browse a file that uses a custom MIME type.

  • The MIME handler for the custom MIME type is registered.

In this scenario, you may receive the following error message:

The file you are downloading cannot be opened by the default program. It is either corrupted or has an incorrect file type.


In some occasions, Internet Explorer may also display a blank page.

Resolution

Service pack information

To resolve this problem, obtain the latest service pack for Windows Vista. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

935791 How to obtain the latest Windows Vista service pack But you must add the FEATURE_REPORT_CACHEFILE_KB925832 registry entry to turn on the fix

Hotfix information

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. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

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, contact 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 Web site:

http://support.microsoft.com/contactus/?ws=supportNote 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.

Registry information

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

322756 How to back up and restore the registry in Windows

After you apply this hotfix, you must add the FEATURE_REPORT_CACHEFILE_KB925832 registry entry to turn on the fix. To do this, follow these steps:

  1. Click Start, click Run, type regedit, and then click OK.

  2. Locate and then click the HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\FeatureControl registry key.

  3. On the Edit menu, point to New, and then click Key.

  4. Type the following key name, and then press ENTER:

    FEATURE_REPORT_CACHEFILE_KB925832

  5. On the Edit menu, point to New, and then click DWORD Value.

  6. Type the following value name, and then press ENTER:

    iexplore.exe

  7. Right-click iexplore.exe, and then click Modify.

  8. Type 1, and then click OK.

  9. Exit Registry Editor.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows XP

File name

File version

File size

Date

Time

Platform

SP requirement

Service branch

Urlmon.dll

6.0.2900.3009

615,936

05-Oct-2006

12:28

x86

SP2

SP2QFE

Windows Vista, x86

File name

File version

File size

Date

Time

Platform

Update.mum

Not Applicable

2,031

10-Jul-2007

15:25

Not Applicable

X86_9bea2207ce8599dc91db2690638058dd_31bf3856ad364e35_6.0.6000.20636_none_e5e53045c3e3bfd7.manifest

Not Applicable

724

10-Jul-2007

15:25

Not Applicable

X86_microsoft-windows-i..ersandsecurityzones_31bf3856ad364e35_6.0.6000.20636_none_b36c0612f2d3e8e2.manifest

Not Applicable

283,492

10-Jul-2007

15:27

Not Applicable

Urlmon.dll

7.0.6000.20636

1,155,072

10-Jul-2007

02:26

x86

Windows Vista x64

File name

File version

File size

Date

Time

Platform

Amd64_9bea2207ce8599dc91db2690638058dd_31bf3856ad364e35_6.0.6000.20636_none_4203cbc97c41310d.manifest

Not Applicable

726

10-Jul-2007

15:25

Not Applicable

Amd64_c34bcd7db9af2bd035379a08a6a442cd_31bf3856ad364e35_6.0.6000.20636_none_1f5bc2cf7c85ea51.manifest

Not Applicable

728

10-Jul-2007

15:25

Not Applicable

Amd64_microsoft-windows-i..ersandsecurityzones_31bf3856ad364e35_6.0.6000.20636_none_0f8aa196ab315a18.manifest

Not Applicable

283,526

10-Jul-2007

15:31

Not Applicable

Package_1_for_kb925832~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,823

10-Jul-2007

15:25

Not Applicable

Package_2_for_kb925832~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

2,042

10-Jul-2007

15:25

Not Applicable

Update.mum

Not Applicable

1,925

10-Jul-2007

15:25

Not Applicable

X86_microsoft-windows-i..ersandsecurityzones_31bf3856ad364e35_6.0.6000.20636_none_b36c0612f2d3e8e2.manifest

Not Applicable

283,492

10-Jul-2007

15:31

Not Applicable

Urlmon.dll

7.0.6000.20636

1,422,848

10-Jul-2007

03:22

x64

Urlmon.dll

7.0.6000.20636

1,155,072

10-Jul-2007

02:26

x86

Windows Internet Explorer 7 for Windows XP

File name

File version

File size

Date

Time

Platform

Urlmon.dll

7.0.6000.20636

1,155,072

12-Jul-2007

14:48

x86

Windows Internet Explorer 7 for Windows Server 2003 x86

File name

File version

File size

Date

Time

Platform

Urlmon.dll

7.0.6000.20636

1,155,072

14-Jul-2007

05:46

x86

Windows Internet Explorer 7 for Windows Server 2003 x64

File name

File version

File size

Date

Time

Platform

SP requirement

Service branch

Urlmon.dll

7.0.6000.20636

1,422,848

13-Jul-2007

16:21

x64

SP2

Not Applicable

Wurlmon.dll

7.0.6000.20636

1,155,072

13-Jul-2007

16:21

x86

SP2

WOW

Windows Internet Explorer 7 for Windows Server 2003 IA-64



File name

File version

File size

Date

Time

Platform

SP requirement

Service branch

Urlmon.dll

7.0.6000.20636

2,531,328

13-Jul-2007

16:08

IA-64

SP2

Not Applicable

Wurlmon.dll

7.0.6000.20636

1,155,072

13-Jul-2007

16:08

x86

SP2

WOW

Windows Internet Explorer 8

The fix is included in Internet Explorer 8. But you must add the FEATURE_REPORT_CACHEFILE_KB925832 registry entry to turn on the fix



Workaround

To work around this problem, you can open the file by using one of the following methods:

  • Save the file on the computer, and then open the saved version of the file.

  • Set the iexplore.exe DWORD value to 0 in the following registry subkeys, and then open the online version of the file:

    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_MIME_HANDLING

    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_MIME_SNIFFING

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Windows Vista Service Pack 1. But you must add the FEATURE_REPORT_CACHEFILE_KB925832 registry entry to turn on the fix

More Information

For more information about how Internet Explorer handles MIME types, visit the following Microsoft Web site:

http://msdn2.microsoft.com/en-us/library/ms775148.aspxFor 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

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