Files with mtk extension were associated with Matrikon applications. It is an obsolete file format.
There is one other file type using
the MTK file extension!
.mtk - MPU-401 Trakker audio data
MTK file extension - Matrikon software license file
What is mtk file? How to open mtk files?
File type specification:
The mtk file extension was used for license data files in Matrikon programs. Matrikon was acquired in 2010 by Honeywell Process Solutions to form the new Advanced Solutions business. Most likely obsolete file format.
This mtk file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.