Microsoft KB Archive/323308

= Internet Explorer file downloads over SSL do not work with the cache control headers =

Article ID: 323308

Article Last Modified on 11/15/2007

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APPLIES TO

 Windows Internet Explorer 7 in Windows Vista Windows Internet Explorer 7 for Windows XP Windows Internet Explorer 7 for Windows Server 2003 Microsoft Internet Explorer 6.0, when used with:  Microsoft Windows XP Professional

 Microsoft Windows 2000 Standard Edition

 Microsoft Windows NT 4.0</li></ul>

 Microsoft Windows 98 Second Edition</li></ul> </li> Microsoft Internet Explorer 5.5, when used with:  Microsoft Windows 2000 Standard Edition</li></ul>

 Microsoft Windows NT 4.0</li></ul>

 Microsoft Windows Millennium Edition</li></ul>

 Microsoft Windows 98 Second Edition</li></ul> </li> Microsoft Internet Explorer 5.01 Service Pack 1, when used with:  Microsoft Windows 2000 Standard Edition</li></ul>

<ul> <li>Microsoft Windows NT 4.0</li></ul>

<ul> <li>Microsoft Windows 98 Second Edition</li></ul> </li> <li>Microsoft Internet Explorer 5.01 Service Pack 2, when used with: <ul> <li>Microsoft Windows 2000 Standard Edition</li></ul>

<ul> <li>Microsoft Windows NT 4.0</li></ul>

<ul> <li>Microsoft Windows 98 Second Edition</li></ul> </li></ul>

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<div class="notice_section">

This article was previously published under Q323308

<div class="notice_section">

Important This article contains information about how to modify the registry. Make sure that you back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows registry

<div class="symptoms_section">

SYMPTOMS
When you try to open a Microsoft Office document or a PDF file by typing an HTTPS URL for the document in the Address bar of Internet Explorer 6 Service Pack 1 (SP1), you may receive the following error message:

Unable to download.

Internet Explorer was unable to open this site. The requested site is either unavailable or cannot be found. Please try again later.

<div class="cause_section">

CAUSE
This issue occurs if the server sends a &quot;Cache-control:no-store&quot; header or sends a &quot;Cache-control:no-cache&quot; header.

<div class="resolution_section">

RESOLUTION
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

Important Because all of the hotfix installer packages have the same installer (Q323308.exe), you must be careful to obtain the hotfix that exactly matches your version of Internet Explorer.

Internet Explorer 5.01
A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows 2000 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

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

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

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. <pre class="fixed_text">  Date         Time   Version       Size     File name --  06-Jun-2002  15:43  5.0.3506.600  461,072  Wininet.dll To Override the no-cache directive for Internet Explorer 5.01, follow these steps: <ol> <li>Start Registry Editor.</li> <li>For a per-user setting, locate the following registry key:

For a per-computer setting, locate the following registry key:

</li> <li>On the Edit menu, click Add Value, and then add the following registry values:

&quot;BypassSSLNoCacheCheck&quot;=Dword:00000001

</li> <li>Quit Registry Editor.</li></ol>

Internet Explorer 5.5
A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Internet Explorer 5.5 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

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

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this hotfix has the file attributes (or later) 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 tool in Control Panel. <pre class="fixed_text">  Date         Time   Version        Size     File name ---  06-Jun-2002  13:42  5.50.4918.600  481,040  Wininet.dll To override the no-cache directive for Internet Explorer 5.5 SP2, follow these steps: <ol> <li>Start Registry Editor.</li> <li>For a per-user setting, locate the following registry key:

For a per-computer setting, locate the following registry key:

</li> <li>On the Edit menu, click Add Value, and then add the following registry values:

&quot;BypassSSLNoCacheCheck&quot;=Dword:00000001

</li> <li>Quit Registry Editor.</li></ol>

Internet Explorer 6
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that this article describes. Apply this hotfix only to systems that are experiencing this specific problem.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or 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. To create a separate service request, visit the following Microsoft Web site:

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

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. <pre class="fixed_text">  Date         Time   Version        Size     File name ---  28-May-2002  13:32  6.0.2717.2800  583,168  Wininet.dll To override the no-cache directive for Internet Explorer 5.5 SP2, follow these steps: <ol> <li>Start Registry Editor.</li> <li>For a per-user setting, locate the following registry key:

For a per-computer setting, locate the following registry key:

</li> <li>On the Edit menu, click Add Value, and then add the following registry values:

&quot;BypassSSLNoCacheCheck&quot;=Dword:00000001

</li> <li>Quit Registry Editor.</li></ol>

Internet Explorer 6 SP1
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that this article describes. Apply this hotfix only to systems that are experiencing this specific problem.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or 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. To create a separate service request, visit the following Microsoft Web site:

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

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. <pre class="fixed_text">  Date         Time   Version        Size     File name ---  23-Sep-2002  14:50  6.0.2800.1121  588,288  Wininet.dll To override the no-cache directive for Internet Explorer 6 SP1 before you install MS04-004, follow these steps: <ol> <li>Start Registry Editor.</li> <li>For a per-user setting, locate the following registry key:

For a per-computer setting, locate the following registry key:

</li> <li>On the Edit menu, click Add Value, and then add the following registry values:

&quot;SSLPragmaNoCache&quot;=Dword:00000001

</li> <li>Quit Registry Editor.</li></ol>

To override the no-cache directive for Internet Explorer 6 SP1 after you install MS04-004, follow these steps: <ol> <li>Start Registry Editor.</li> <li>For a per-user setting, locate the following registry key:

For a per-computer setting, locate the following registry key:

</li> <li>On the Edit menu, click Add Value.</li> <li>To override the directive for HTTPS connections, add the following registry value:

&quot;BypassSSLNoCacheCheck&quot;=Dword:00000001

To override the directive for HTTP connections, add the following registry value:

&quot;BypassHTTPNoCacheCheck&quot;=Dword:00000001

</li> <li>Quit Registry Editor.</li></ol>

<div class="workaround_section">

WORKAROUND
To work around this problem, use a hypertext reference (HREF) to load the document.

Note This workaround works only if the server uses the &quot;cache-control:no-store&quot; header.

<div class="status_section">

STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.

<div class="references_section">

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

815313 Prevent caching when you download active documents over SSL

Keywords: kberrmsg kbbug kbfix kbie600presp2fix kbqfe kbenv kbie600sp1fix kbie550presp3fix kbhotfixserver KB323308

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