Trouble associating .msg files with Outlook 2016

I have office365 installed on Windows 10 (64 bit) machine.

Recently I re-installed my CRM software and noticed the email attachments no longer opened.

The problem is that .msg files are no longer associated with Outlook 2016.
Outlook itself is working fine but the msg files are not associated with it. When I open the default settings -> associate file types with apps, I cannot figure out how to select Outlook 2016, there is no option for it and I cannot find the outlook.exe on disk that I can use to associate it.

Right now, the msg type files are associated with Notepad.

Any help much appreciated.
LVL 1
David HuismanAsked:
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Joe Winograd, Fellow&MVEConnect With a Mentor DeveloperCommented:
David,
You should check out this thread at the MS forums:
http://answers.microsoft.com/en-us/office/forum/office_2016-outlook/outlook-2016-wont-open-saved-msg-or-pst-files/77cc33eb-6f39-49e8-a1f2-c447e042b9b9

In particular, notice this comment:
"The Quick Repair did the trick. After rebooting I was able to associate Outlook 2016 to .msg files."

Regards, Joe
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JohnBusiness Consultant (Owner)Commented:
Outlook is here: C:\Program Files (x86)\Microsoft Office\root\Office16

and .MSG is associated with Outlook on my Windows 10 64-bit Office 2016 system.
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David HuismanAuthor Commented:
I get an error as attached when I attempt to select Outlook.exe from that folder.
Error-with-association.PNG
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David HuismanAuthor Commented:
Note: The file shown associated with msg type was something I tried earlier, the dialog box warning is when I try to select Outlook.exe
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JohnBusiness Consultant (Owner)Commented:
Are you using Office 32-bit or 64-bit (if 64-bit substitute Program Files for Program Files (x86) above)?
Can you associate any program?

Here is what I see.

Outlook-2016-Associate-MSG
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David HuismanAuthor Commented:
I am using office365. When I try the programs folder I do not see the Office16 folder only "Web Platform Installer".
If I look at eml and oft extensions, they are associated ok with Outlook 2016. And it appears as an option if I attempt to change app associated. I don't know why they can't provide a list of ALL apps already associated with files in the pull down list.
EML-files-ok.PNG
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Joe Winograd, Fellow&MVEDeveloperCommented:
David,
What happens if you do a right-click on a .MSG file in Windows/File Explorer (or whatever file manager you use) and select Open with...? I get this:

right-click Open with
What does yours look like? Regards, Joe
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JohnBusiness Consultant (Owner)Commented:
Are you using Control Panel, Default Programs, Associate File Type? It looks like it.

Do you see a More Apps (down arrow) like in my Screen Shot?
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David HuismanAuthor Commented:
I see
Internet Explorer
Look For an App in the store
More Apps

If I click more apps I see a variety of apps (but NOT outlook 2016)
Corel Draw
iTunes
Visual Studio
NotePad
Word 2016
Paint
pdf Editor
etc

If I then browse to computer to select and app and select Outlook 2016, I get the previous error I showed you
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JohnBusiness Consultant (Owner)Commented:
Is your Office Web based? or is it local (installed on the PC).

If the latter, try running a Full Repair of Office.

The list above is about correct when you do More Apps.
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David HuismanAuthor Commented:
I installed on my desktop from the web.
I have done a reinstall but this does not fix it.
Originally it was associated and something has changed it and I cannot change it back.
Office install does not appear in my installed programs list but I am running Word, Publisher, Excel etc ok.
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JohnBusiness Consultant (Owner)Commented:
I see  Internet Explorer  <-- Is Outlook your default mail program or do you use a different email program?
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Joe Winograd, Fellow&MVEDeveloperCommented:
> Note: The file shown associated with msg type was something I tried earlier, the dialog box warning is when I try to select Outlook.exe

To be clear, are you saying that you intentionally associated .MSG with OSPPREARM.EXE?
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David HuismanAuthor Commented:
Yes, Outlook is default email.
Firefox is the default internet browser (though it is not in the list)
I think the list is compiled from recent activity rather than a list of available apps.
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JohnBusiness Consultant (Owner)Commented:
Office install does not appear in my installed programs list

Something has gone very wrong.

Make a new, test Windows User Profile (Account). Log into the new Windows Account and test Outlook in the new Windows Account.

If still no, you need to consider a Repair Install of Windows.
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David HuismanAuthor Commented:
Joe,

Yes, I selected that file as it was in the Office folder and it would not let me select outlook 2016.
I can associate with any of the listed apps but cannot find any link that will let me associate it with Outlook 2016. I would assume this should have been much simpler because other file types ARE associated with Outlook 2016.
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David HuismanAuthor Commented:
Sounds like the old days when we had internet connection issues and tech support suggested to replace the motherboard. Surely, there is some registry entry that sets these associations that we can tweak. Outlook email is running perfectly fine, I have no issues with any of the apps, ONLY the association of msg to Outlook. I can associate the file type with apps ok but just cannot find the appropriate link to Outlook 2016.
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JohnBusiness Consultant (Owner)Commented:
But you say "Office install does not appear in my installed programs list " and this is definitely incorrect and in a major way.

Trying a different profile is not hard.

Nowadays, even a Repair Install leaves everything in place.
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David HuismanAuthor Commented:
If I go to the APPS list on Windows 10 (bottom left icon, I see Outlook 2016, This is where I pinned the shortcut to my task bar to run outlook. All the other office components are also available in that list. But if I go to control panel, programs and features then I do not specifically see office or outlook in there.
And this was the same when the association was working previously
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JohnBusiness Consultant (Owner)Commented:
In my Programs and Features, I see Microsoft Office 365 -en -us and all associations work.
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JohnBusiness Consultant (Owner)Commented:
If you have Windows 10, a Repair Install and Keep Data, Keep Applications is dead easy, and leaves everything where you left it. I have done this myself.
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David Johnson, CD, MVPOwnerCommented:
in programs and features you should have
Microsoft Office Professional Plus 2016-en-us
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David HuismanAuthor Commented:
Yes, I did find Microsoft Office 365 Business-en-us
Can I point to that somehow?
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David Johnson, CD, MVPOwnerCommented:
so you should have C:\Program Files (x86)\Microsoft Office\root\Office16\outlook.exe
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David HuismanAuthor Commented:
Yes I do, but as in previous post. I get this error when I select it.
"The program you have selected cannot be associated with this file type. Please choose another program.
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David Johnson, CD, MVPOwnerCommented:
go to control panel \ default programs \set default programs
scroll down to outlook 2016 and click set this program as default then ok
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David HuismanAuthor Commented:
Outlook 2016 is no longer in the list of default programs. Previously I selected this as default. I note that each app I select as default is removed from list. Is there a way to get them back again?
Default-list.PNG
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David Johnson, CD, MVPOwnerCommented:
I can't reproduce your error perhaps a refresh is in order
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David HuismanAuthor Commented:
So, we now know how to break Windows 10. Select notepad as default file type for msg message.
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David HuismanAuthor Commented:
YES!! Thanks Guys, I did the online reset for MS office. When I went back to defaults, the msg was sill set to notepad BUT when I clicked to change, NOW I see Outlook 2016 in list and it associated ok.

Thanks guys
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David HuismanAuthor Commented:
Thanks for prompt response
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David Johnson, CD, MVPOwnerCommented:
repair and reinstall were previously suggested . OP stated did a reinstall (near the top of the thread). So another repair worked.. Great
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JohnBusiness Consultant (Owner)Commented:
I had suggested a Repair earlier which you had said No to.
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Joe Winograd, Fellow&MVEDeveloperCommented:
> I did the online reset for MS office. When I went back to defaults, the msg was sill set to notepad BUT when I clicked to change, NOW I see Outlook 2016 in list and it associated ok.

Glad to hear it! Regards, Joe
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