Cannot open MHT files

[Mad King Soup]

For some reason my computer refuses to open MHT files.

I first noticed it when I started programs that use them, eg BitComet.
I would always get a File Download dialog:
http://i44.photobucket.com/albums/f9/madkingsoup/FileDownload.jpg
Clicking on Open, Save, or Cancel produces the same result - nothing
happens.

The application that requires the file comes up with an Action
Cancelled error before the File Download dialog appears and stays like
that, regardless of which button I press:
http://i44.photobucket.com/albums/f9/madkingsoup/ActionCancelled.jpg

If you try to open the file through IE (File > Open), I get the same
File Download dialog, but IE remains unchanged - no error at all. The
file just won't open.

I tried going into the File Types section of Folder Options and making
sure that the MHT and MHTM sections had speech marks in the right
places (ie around the %1 and so on) as per this old thread from 2002:
http://tinyurl.com/ec5pw. However, it made no difference.

I was just about living with it, but it's now annoying me loads! Hope
someone can help.

Cheers
MKS

 

[Ramesh, MS-MVP]

Hi MKS,

Download FileExtInfo.zip from this URL:
http://windowsxp.mvps.org/fileextinfo.htm

Unzip and run the utility. Select .MHT from the listing, and generate a
report. Post the full information here.

--
Regards,

Ramesh Srinivasan, Microsoft MVP [Windows XP Shell/User]
Windows® XP Troubleshooting http://www.winhelponline.com


For some reason my computer refuses to open MHT files.

I first noticed it when I started programs that use them, eg BitComet.
I would always get a File Download dialog:
http://i44.photobucket.com/albums/f9/madkingsoup/FileDownload.jpg
Clicking on Open, Save, or Cancel produces the same result - nothing
happens.

The application that requires the file comes up with an Action
Cancelled error before the File Download dialog appears and stays like
that, regardless of which button I press:
http://i44.photobucket.com/albums/f9/madkingsoup/ActionCancelled.jpg

If you try to open the file through IE (File > Open), I get the same
File Download dialog, but IE remains unchanged - no error at all. The
file just won't open.

I tried going into the File Types section of Folder Options and making
sure that the MHT and MHTM sections had speech marks in the right
places (ie around the %1 and so on) as per this old thread from 2002:
http://tinyurl.com/ec5pw. However, it made no difference.

I was just about living with it, but it's now annoying me loads! Hope
someone can help.

Cheers
MKS

 

[Mad King Soup]

Okie dokie, Ramesh, here it is.
Thanks
MKS

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
FileExtInfo v1.0 - Log file
17/03/2006 17:52:15

Complete File association information for ---> .MHT
Useful for troubleshooting File association and other problems
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


[HKEY_CLASSES_ROOT\.MHT]
@="mhtmlfile"


[HKEY_CLASSES_ROOT\mhtmlfile]
@="MHTML Document"
"EditFlags"=dword:00010000
"BrowserFlags"=dword:00000008

[HKEY_CLASSES_ROOT\mhtmlfile\BrowseInPlace]
@=""

[HKEY_CLASSES_ROOT\mhtmlfile\CLSID]
@="{3050F3D9-98B5-11CF-BB82-00AA00BDCE0B}"

[HKEY_CLASSES_ROOT\mhtmlfile\DefaultIcon]
@="C:\\Program Files\\Internet Explorer\\iexplore.exe,22"

[HKEY_CLASSES_ROOT\mhtmlfile\shell]
@="opennew"

[HKEY_CLASSES_ROOT\mhtmlfile\shell\open]
@="Open in S&ame Window"

[HKEY_CLASSES_ROOT\mhtmlfile\shell\open\command]
@="\"C:\\Program Files\\Internet Explorer\\iexplore.exe\" -nohome"

[HKEY_CLASSES_ROOT\mhtmlfile\shell\open\ddeexec]
@="\"file://%1\",,-1,,,,,"

[HKEY_CLASSES_ROOT\mhtmlfile\shell\open\ddeexec\Application]
@="IExplore"

[HKEY_CLASSES_ROOT\mhtmlfile\shell\open\ddeexec\Topic]
@="WWW_OpenURL"

[HKEY_CLASSES_ROOT\mhtmlfile\shell\opennew]
@="&Open"

[HKEY_CLASSES_ROOT\mhtmlfile\shell\opennew\command]
@="\"C:\\Program Files\\Internet Explorer\\iexplore.exe\" \"%1\""

[HKEY_CLASSES_ROOT\mhtmlfile\shell\opennew\ddeexec]
@="\"file://%1\",,-1,,,,,"

[HKEY_CLASSES_ROOT\mhtmlfile\shell\opennew\ddeexec\Application]
@="IExplore"

[HKEY_CLASSES_ROOT\mhtmlfile\shell\opennew\ddeexec\IfExec]
@="*"

[HKEY_CLASSES_ROOT\mhtmlfile\shell\opennew\ddeexec\Topic]
@="WWW_OpenURLNewWindow"


[HKEY_CLASSES_ROOT\SystemFileAssociations\.MHT]

[HKEY_CLASSES_ROOT\SystemFileAssociations\.MHT\shellex]

[HKEY_CLASSES_ROOT\SystemFileAssociations\.MHT\shellex\{BB2E617C-0920-11d1-9A0B-00C04FC2D6C1}]
@="{EAB841A0-9550-11cf-8C16-00805F1408F3}"


[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.MHT]

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.MHT\OpenWithList]
"a"="iexplore.exe"
"MRUList"="badfec"
"b"="BitComet.exe"
"c"="mPhonetools.exe"
"d"="MMCenter.EXE"
"e"="setup.exe"
"f"="MOffice.EXE"

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.MHT\OpenWithProgids]
"mhtmlfile"=hex(0):

 

[Ramesh, MS-MVP]

Hi MKS,

The file association looks all right. Open the following folder and note
down the file names listed there:

%Programfiles%\Internet Explorer\Plugins

Post the details here.

--
Regards,

Ramesh Srinivasan, Microsoft MVP [Windows XP Shell/User]
Windows® XP Troubleshooting http://www.winhelponline.com


Okie dokie, Ramesh, here it is.
Thanks
MKS

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
FileExtInfo v1.0 - Log file
17/03/2006 17:52:15

Complete File association information for ---> .MHT
Useful for troubleshooting File association and other problems
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


[HKEY_CLASSES_ROOT\.MHT]
@="mhtmlfile"

 

[Mad King Soup]

Here they are.
Cheers

nppdf32.dll
npqtplugin2.dll
npqtplugin3.dll
npqtplugin4.dll
npqtplugin5.dll
npqtplugin6.dll
npqtplugin7.dll
npqtplugin.dll
nprvrt32.dll
quicktimeplugin.class
vssver.scc
RichFX\Player\nprfxins.dll

 

[Ramesh, MS-MVP]

I have no Plugins installed and the mht file. See if *temporarily* moving
the files to a different folder helps. If that helps, then you need to
isolate the problem by moving them back one at a time.

Also, if you have the following registry key, backup the branch to a REG
file and delete the key.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet
Explorer\Plugins\Extension\mht

To open Registry Editor, type Regedit.exe in Start/Run.

--
Regards,

Ramesh Srinivasan, Microsoft MVP [Windows XP Shell/User]
Windows® XP Troubleshooting http://www.winhelponline.com


Here they are.
Cheers

nppdf32.dll
npqtplugin2.dll
npqtplugin3.dll
npqtplugin4.dll
npqtplugin5.dll
npqtplugin6.dll
npqtplugin7.dll
npqtplugin.dll
nprvrt32.dll
quicktimeplugin.class
vssver.scc
RichFX\Player\nprfxins.dll

 

[Mad King Soup]

Moving all the plugins makes no difference, and that registry entry
doesn't exist. :-(

 

[Ramesh, MS-MVP]

The only difference I found in the registry export is for the "EditFlags"
value.

In my system (fresh installation), the EditFlags value is dword:00000000

See if fixing that helps.

Also, check this registry key:

HKEY_LOCAL_MACHINE\Software\Microsoft\Internet
Explorer\Plugins\MIME\message/rfc822

The above branch does not exist by default. If it's present, backup the
branch to a REG file and then delete.

--
Regards,

Ramesh Srinivasan, Microsoft MVP [Windows XP Shell/User]
Windows® XP Troubleshooting http://www.winhelponline.com


Moving all the plugins makes no difference, and that registry entry
doesn't exist. :-(

 

[Mad King Soup]

I changed the EditFlags entry and that MIME registry entry doesn't
exist.
I still have the same problem. :-((

 

[Ramesh, MS-MVP]

I'm running out of ideas MKS

--
Regards,

Ramesh Srinivasan, Microsoft MVP [Windows XP Shell/User]
Windows® XP Troubleshooting http://www.winhelponline.com


I changed the EditFlags entry and that MIME registry entry doesn't
exist.
I still have the same problem. :-((

 

[Mad King Soup]

I'm not sure whether to be proud or not that I have an inexplicable
problem...
Thanks for trying though, Ramesh.