Microsoft KB article re: POP3 issues after Office 2016 update
As I mentioned in an earlier post, many POP3 mail users have reported some issues with Outlook after the latest Office 2016 automatic update, which was applied a few days ago (around February 23-24). Microsoft has posted a new Knowledge Base (KB) article addressing these issues. You can find the KB article by clicking this link: Email is deleted from server or duplicated in Outlook 2016 when downloaded using POP3
In addition to the issue I discussed previously, which involved the repeated downloading of previously downloaded mail messages, some POP3 users have also experienced an even more serious problem: After mail has been downloaded, it is deleted from the server, regardless of whether users have configured Outlook to keep mail on the server for a specific number of days, such as 14 days. (This option is useful for people who receive mail on multiple devices – as most of us do nowadays.)
The first part of the KB article addresses the problem of mail being deleted from the server after downloading. The second part of the KB article addresses the problem of duplicate e-mail messages being downloaded over and over, and in particular explains how to roll back to the previous automatic update.
For those of you who would like to roll back to an earlier update, you might find it somewhat easier to follow the steps outlined in this post by Outlook MVP Robert Sparnaaij: Uninstall Office 365 Click-To-Run Updates What makes Robert’s post especially user-friendly is that you can copy and paste the sample text (which seems to work better than if you type it yourself at the C: prompt). Also see my earlier post, POP3 Mail Users Report Problems in Outlook After Office 2016 Update, for more information and instructions.
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