Microsoft Update: MS17-09-OFF-outlookloc2010-kb4011089-fullfile-x86-glb.exe displayed as installed in Compliance Reports; however, the Client's Add/Remove doesn't list as installed updates.

Appears the IsInstalled=TRUE rule logic is inaccurately targeting

This issue was resolved in PMImport 7.2.81 released on 9/29.

Ensure the PMImport is at this version or higher via the Console > Home > Patch Management > Settings > MetaData Import Task; double-click to open the latest historical execution to view the version, and run Now or on schedule to update as needed: