In appdata for Outlook are a few XML files where OST and PST files are stored. Before you create a new profile, you should save-off those XML files (put them in a different folder). They are used by Outlook 2016 to build the profile instead of the PRF files that prior versions of Outlook used.
From: listsad...@lists.myitforum.com [mailto:listsad...@lists.myitforum.com] On Behalf Of Katherine M. Moss Sent: Thursday, June 1, 2017 8:56 AM To: ntsysadm@lists.myitforum.com Subject: [NTSysADM] Nasty Outlook 2016 and Windows 10 issue Hi all, This might end up on the Exchange list, but until then, it looks like a different issue. I have recently reinstalled Office 2016 in light of a crashing Outlook when I went to set up this email address inside. Upon reinstall, I created a new profile, (the "connect Outlook to Office 365" dialogue needs to go the hell away, if you ask me), selected connect to a different account, and then all of the fields are autopopulated with values from my other email account which is indeed Office 365. If this is a brand new office install and my computer is set up with a local account, from where is Outlook even pulling values from my Microsoft account anyway? Not sure whether the two issues are related, but after correcting the autopopulated fields to match the values for this account (on premise Exchange server 2016), I'm having an annoying thing happen where the credentials prompt just hangs for ever and ever. Hence I'm having to use the Windows 10 mail application until I can resolve the issue. It's only on one computer where it happens; this one is fine, and my other laptop is fine. It's only my newer primary laptop where this is happening. Someone else I know is having the same issue, and autodiscover is set up correctly. Any other advice?