Not sync folders not found after MS Outlook 365 update

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charly.csh

New Member
Outlook version
Outlook 2013 64 bit
Email Account
IMAP
Hi everyone,

I hope somebody can help me

I had an outlook version of MS Office 2013 and it has some folders into my mailbox (I was not aware that not all the emails were sync correctly with the webmail account). I updated the version to MS Office 365 and when I opened it I saw the miss of some folders with important emails, so I entered to webmail and then I see the issue...

I uninstalled the 365 version to go back to MS Office 2013 and I cannot open it because it says something like "microsoft office professional plus 2013 configuration did not complete successfully" I get back also to setting to "repair" it and restart and nothing is changing.. (Ctrl + R + Outlook/safe also is not working)

I do not know if this a .ost a should look for and then change to pst to recover

I highly appreciate the support to recover my folders and my emails
 
When synchronization issues occur in Microsoft Outlook or in Microsoft Outlook Web App (formerly Outlook Web Access), you may experience the following symptoms.

Symptom 1

You see differences or mismatches between the messages that you receive in Microsoft Outlook compared to Microsoft Outlook Web App.

Symptom 2

You have an issue with Outlook, but the issue does not occur when cached mode is disabled.

Symptom 3

Occasionally you receive an error message when you synchronize your Offline Folder file (.ost) in Outlook with your mailbox on a server that is running Microsoft Exchange Server. The error message may resembles the following:
Cannot start Microsoft Outlook. Cannot open the Outlook window. The set of folders cannot be opened. The file c:\Users\<username>\AppData\Local\Microsoft\Outlook\<username@domain.com.ost> is not an Outlook data file (ost).

Symptom 4

You notice that some items such as email messages, appointments, contacts, tasks, journal entries, notes, posted items, and documents are missing from your .ost file or from your mailbox after you synchronize your .ost file and your mailbox.

Hope this helps.
 
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