Noticed an issue in the Office 365 Proplus and Microsoft office 2016, Any office applications when we open in backend there is popup shows below image and task list it shows as “AdxTaskPane”
This can be even noticed in the taskbar as well,
Issue: This could be because of Azure niformation protection toolbar add-in which installed.
For more information on Azure Information Protection , Please refer Microsoft Article
To resolve this issue, Please follow the below actions
Open Any MS Office Application — Go to File —Options
Navigate to General — Select Optimize for compatibility( Application restart required) and close all Microsoft Applications and reopen.