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MSG Previewer

MSG Previewer is an outlook message (.msg) preview pane for 64 bits Windows. Microsoft doesn't support the a 64 bit previewer for .msg extension in windows explorer. These dll files will make it work.
64 bit .msg preview pane for windows explorer

Installation instruction

Download dll files
Download dll files (windows 10 version) *

You can put them anywhere you like, preferable a path you can type easily. In below example i've put them under d:\MSGPreviewer

You also need .NET 4.5 , a newer version is good too.

Now you need to run Command line in administrator mode. You can do this by create a shortcut to cmd.exe and right mouse click and choose run as administrator.

Goto the directory: C:\Windows\Microsoft.NET\Framework64\v4.0.30319 , by typing: cd C:\Windows\Microsoft.NET\Framework64\v4.0.30319

then type these two commands:

regasm /tlb d:\MSGPreviewer\SharpShell.dll
regasm /codebase d:\MSGPreviewer\msgpreview.dll

This will register the dll files as com object and the previewer should work now.


Windows 10 version notes

If the normal version doesn't work, there is a fallback to the windows 10 version of msgpreviewer. This version shows the text as plain text.

Uninstallation

run Command line in administrator mode
Goto the directory: C:\Windows\Microsoft.NET\Framework64\v4.0.30319 , by typing: cd C:\Windows\Microsoft.NET\Framework64\v4.0.30319

type the following commands:
regasm /u d:\MSGPreviewer\SharpShell.dll
regasm /u d:\MSGPreviewer\msgpreview.dll

finally, delete the msgpreviewer directory

Excel previewer doesn't work


For information about the excel viewer that doesn't work see:
Excel previewer