.dotm file is Microsoft Word 2007 (winword.exe)
macro-enabled document
template.
Currently only Word 2007 uses this file type. Previous Word versions use
.dot file type.
To break password protected Word document template you can use
Word Password program.
Word Password recovers all Word password types and all
Word versions.
Possible password types:
Password to open
Document protection password
Password to modify
Word document may contain a VBA project inside. To
recover password-protected VBA project you should use
VBA Password program.