I am trying to open my word document in Outlook 2013 and it's stalling and says "opening in protected view" and does not open. Only opens when I go to Options and Trust center and deselect all for protected view. This worked well even with protected view until last week.
This only happens for external attachments. The only changed thing was that we've added the MailTip for external address to warn people when they send email to externals but this should not have caused the issue? Or could it?
Would some other security updates cause this issue?