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Have you tried to repair Outlook 2013? <br />
<br />
OR<br />
<br />
Uninstall and reinstall Outlook 2013?
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Have you tried to repair Outlook 2013?

OR

Uninstall and reinstall Outlook 2013?

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the same person is sending &nbsp;to me at same time I get it correctly their wont be an html format issue
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the same person is sending  to me at same time I get it correctly their wont be an html format issue

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I am having outlook 2013 and when ONE PERSON outside my organization is sending me meeting invite It comes through just as text and not calendar invite. all internal calendar invite is working ok<br />
<br />
&nbsp;I see one add in missing -open protocol connector for outlook missing. is that can be an issue<br />
<br />
&nbsp;Set-mailboxcalendarsetting<wbr />susername -ProcessExternalMeetingMes<wbr />sages $true, I ran this it didn't work<br />
<br />
I see the same calendar invite through OWA but not through outlook
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I am having outlook 2013 and when ONE PERSON outside my organization is sending me meeting invite It comes through just as text and not calendar invite. all internal calendar invite is working ok

 I see one add in missing -open protocol connector for outlook missing. is that can be an issue

 Set-mailboxcalendarsettingsusername -ProcessExternalMeetingMessages $true, I ran this it didn't work

I see the same calendar invite through OWA but not through outlook

outlook, calendar

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.