Running W10 Ver 20H2 & latest ver of MS 365. Both recently installed after a reinstall
I have 2 small but irritating issues with Outlook now.

1) I cannot seem to get rid of the "always ask" tick box on the warning window when opening mail attachments, despite trying previous methods of opening Outlook as Administrator and then trying to open the attachment. The box continues to be greyed out.
2) If I try to Preview a Word file in reading pane it just says there is a problem as "no preview viewer is installed".
If I try to preview an jpeg file I get nothing
Preview works OK with pdf files and the preview option has a tick box for removing the always preview warning.

Help much appreciated