Outlook For Mac 2016 Could Not Synchronize Record -19703

I have a user that recently upgraded from Outlook 2011 to Outlook 2016 for Mac. Everything went smooth however they are now getting a sync error messages every 12min or so that says something along the lines of 'attachments exceed the limit allowed please remove attachments, sync error code 17193' It shows the Subject of the email but doesn't give any clue as to where its located, I have checked Inbox, Outbox, Sent Items, Drafts and no emails are in there that point to this email issue.

Feb 07, 2018  It seems that some problematic deleted items in the Deleted Items folder could be the cause. You may try to empty the Deleted Items folder and try the 'Empty Cache' in the Properties dialog and then see whether this issue continues.

MS Outlook 2016 (Office 365) for MAC - Could not synchronize record: catchup to Exchange Server. Error: Could not synchronize record; Outlook 2011 on MAC Hello Seth, To resolve the issue that you are getting, you will need to quit all the other applications that are running on your computer, and then follow the steps below. Since the client is Mac with Outlook 2011, could you please let me know whether the issue could be reproduced on the Windows PC with Outlook 2010 or not? I believe it could be a checkpoint here. At the same time, I suggest that you could open your mailbox in the OWA to verify the message could be opened or not.

I don't have anything in the Exchange server queue either. I have checked his email account on a windows computer and still shows nothing, I have checked his email account using the webmail and nothing is showing there. Office for mac.

Could it be on his iPhone? I'll have him check that and report back if that was it but is there anybody that has experienced this issue before and might be able to tell me what the issue is? I would verify that their Exchange account is the only account within outlook.

From a few different places it looks like it could be something stuck in Drafts too (although you said you checked there). Possibly removing the account and re-adding it in Outlook could be the quick fix to it (although they would lose their saved autocompletion which a lot of people complain when they lose it). Im running 2016 on probably 25 Mac's and haven't seen this issue yet, but I have had weird issues with Outlook in general that aren't worth the time messing with and just adding the account back again will fix saving all of our times. This suggestion worked. Interestingly, the subject of the mail in question appeared as part of the error. So what I simply did was copy that subject and used it to search for the mail.

The weird thing though was that the main in question was in my inbox (sent about a year ago), not sent or junk or outbox. Additionally, the mail attachments were rather small, in KBs, not even MBs, so was wondering how those mails were so large. After deleting the first mail, this same message popped up again. On checking this, it picked up another mail, which was also in my inbox. After these two inbox mails were deleted, the error message stopped appearing. Will update if it shows up again.