See if it works correctly in Outlook Safe Mode or when you disable all your add-ins.
If the icon has been added but it does not show the reply or forward status, then there could be various reasons why this is happening. You can use the Move Up and Move Down buttons to position it correctly. If the the Icon column is not listed in the right panel, then you’ll need to add it from the Frequently-used fields panel on the left. View-> Current View-> Customize Current View-> button Fields…
View-> Arrange By-> Custom-> button Fields… Tab View-> group Arrangement-> button Add Columns To verify that it is still there or to add it use The Icon column is enabled by default but could be missing. Let’s first make sure the icon column is actually still showing. It’s unclear if the icons are still showing but do not reflect the reply/forward status or that the icons are not showing at all. When I forward or reply an email in Outlook, I can no longer see by looking at the orignal email that I have forwarded it or replied to it.
