Brands ICT logo

.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.


Installation instruction

Subscribe to the email list and you will receive a download link by email.

* indicates required

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.

How to change the font size

the newest version reads a registry key from: HKLM\software\brandsict\msgpreviewer\fontsize
The value of fontsize determines the size used
In the zip file there is a .reg file you can run to create the registry key.

Errors

This is not a valid .net assembly

You might want to check if you are using the 64bit regasm. You might have used the path: C:\Windows\Microsoft.NET\Framework\v4.0.30319
and you should used C:\Windows\Microsoft.NET\Framework64\v4.0.30319 , notice the 64 in the framework directory.

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