Information
This policy setting controls whether the Adobe Flash control can be activated by Office documents. Note that activation blocking applies only within Office processes.
'Block all activation' prevents the Flash control from being loaded, whether directly referenced by the document or indirectly by another embedded object.
The recommended state for this setting is: Enabled: Block all activation
Adobe Flash was discontinued in 2020. Flash content has had a long history of exploitation by malicious software developers. Blocking will ensure Office does not execute any Flash content. Enforcing the default ensures that the system was not configured in an insecure way.
Solution
To establish the recommended state via configuration profiles, set the following Settings Catalog path to Enabled: Block all activation
Administrative Templates\MS Security Guide\Block Flash activation in Office documents
Impact:
None - this enforces the default behavior of Microsoft Office.