Today I had the very annoying issue of some outlook attachments being blocked. The client had received emails previously from this person but for some reason was blocking a few random attachments from them. They were PDF and Image files. I tried the usual registry edit tricks and reinstalling and recreating their profile but this didn’t work. I stumbled across a simple thing that i never thought would work. I did this on Office 365 2019 and a Microsoft 365 Exchange account.

  1. Simply right click on the email
  2. Select “Junk”
  3. Select “Never block this sender” or “Never block sender’s Domain” if you trust the business
  4. Obviously you should only do this if you definitely trust this person
  5. Thats it, this allowed us to view their attachments