A program may not function properly

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Hi guys,

I've got a strange problem with Outlook on Lumia 640. I keep getting startup error message "A program may not function properly".

Really hope someone has a solution for this. i'm running out of ideas.
 

Regedit32

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Hi jorge11,

Welcome to the forum.

Have you attempting to remove and reset your email account [ especially if you're using imap protocols ].

In the past [ albeit several years ago now ] some of the servers with XTRA who were using Yahoo servers had problems providing identical UIDs rather than incrementing them. That turned out to be a bug that ultimately was repaired on the ISP end, but a work around was to remove the account then set it up again to force a new UID which allow the email applications to startup and sync correctly.

Note: By remove account, I do not meant to delete it off the ISP website, but remove it from your Windows phone.
 

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