Monthly Archives: December 2009

Word cannot start the convertor mswrd632

I have written a command line application that, among other things, converts Word Documents to HTML using the Microsoft.Office.Interop.Word library.

I haven’t used it for a while, and recently had to re-run some conetnt and found this error:

“Word cannot start the convertor mswrd632” occurring quite frequently.

Apparently Microsoft released a security update on 2009-12-08 that prevented some of the access 3rd party programs used to have.

You can re-enable this functionality by:

  1. Open Regedit and browse to HKEY_LOCAL_MACHINESoftwareMicrosoftWindowsCurrentVersionApplets
  2. Create a key “Wordpad” if it is not already there (as a child of Applets)
  3. Add a DWORD Value with a name of “AllowConversion” and a value of “1”

Here is an article on technet describing the issue:

And here is the KB article from Microsoft support:

*** Updated 2009-12-21 *** A comment was left suggesting that “Re-enabling the vulnerable converter that is designed to work with WordPad is probably not a good idea.” They give a couple other options that are worth considering before simply opening the door back up. ┬áPlease see the first comment below.