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.
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
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:
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.
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:
Click Start, click Run, type regedit, and then click OK.
Locate and then click the HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\FeatureControl registry key.
On the Edit menu, point to New, and then click Key.
Type the following key name, and then press ENTER:
On the Edit menu, point to New, and then click DWORD Value.
Type the following value name, and then press ENTER:
Right-click iexplore.exe, and then click Modify.
Type 1, and then click OK.
Exit Registry Editor.
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.
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
For more information about how Internet Explorer handles MIME types, visit the following Microsoft Web site: