Fixing Outlook 2016 “Either there is no default mail client…”

I have a client who can’t open .MSG files with a brand-new Office 10 Pro system, and gets the following error when he tries (using Outlook 2016, installed from Office 365):

Either there is no default mail client or the current mail client cannot fulfill the messaging request.

You might think “aha, I just need to go into the control panel and fix either file associations with .msg files, or perhaps MAPI settings.” You would be wrong. Nope, you’re gonna have to delete a registry key, because of course you are. You’re using Windows!

Open this registry address in regedit:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\PreviewHandlers 

And delete the key with Data value of “Microsoft Windows MAPI Preview Handler”.

Poof. That’s it. No more errors, stuff opens as it should. Yay.

Published by

Jim Salter

Mercenary sysadmin, open source advocate, and frotzer of the jim-jam.

Leave a Reply

Your email address will not be published. Required fields are marked *