The current version of the block_microsoft submitted for approval in the Plugins directory declares Moodle 2.7 as the version. Its version.php declares dependency on the local_onenote plugin, with minimal version 2015011606.

However, there is no local_onenote version for Moodle 2.7 available in the plugins directory with such version. The most recent one for 2.7 is 2015011604.