From Strategy Analytical Platforms 9.4.1 readme https://resource.microstrategy.com/support/releasenote/MSTRAnalytics/ReleaseNotes/ReadMe_Office_6.htm#MOA, Microsoft Office 2007 SP3 is NOT listed as certified Microsoft Office application.
Microsoft Office 2007 SP3 is supported in the 9.4.x line but support will not apply to 9.4.1 Hotfix 4 and beyond.
