Outlook sync issue

TechUST 516 Reputation points
2024-06-10T18:23:29.11+00:00

Hi,

The error I am encountering in Outlook is: "One or more items in the folder you synchronized do not match. To resolve conflicts, open the items and try this operation again." I've followed some steps but the issue persists. Can you please help.

did an O365 repair, created new profile removed OST,

cleared offline data...

Screenshot 2024-06-10 112430.png

Outlook
Outlook
A family of Microsoft email and calendar products.
3,319 questions
Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
5,035 questions
Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
4,338 questions
0 comments

2 answers

Sort by: Most helpful
Most helpful Newest Oldest
  1. Miguel Gonçalves | AVANADE 886 Reputation points
    2024-06-10T23:42:19.56+00:00

    Hi TechUST,

    Open Outlook

    Find the Conflicting Items: Look for the items causing conflicts. Look for the “Sync Issues” folder, which contains information about synchronization issues.

    These could be emails, calendar events, or other data.

    Retry sync again

  2. Joan Hua-MSFT 305 Reputation points Microsoft Vendor
    2024-06-11T06:20:02.58+00:00

    Hi @ TechUST

    Welcome to our forum!

    According to my research: This issue happens when there is a local conflict of the calendar item in Outlook Desktop. The server copy of the calendar item does not have a conflict. I am afraid it is a known issue, and the Outlook Team is investigating this issue.

    In the meantime, there are some workarounds you may refer to, considering you have tried ‘cleared offline data...’, it is recommended that you please try workaround 2. More information: Outlook shows conflict errors when updating or cancelling meetings - Microsoft SupportUser's image

    If there is any update, I will post here.

    Hope it helps!

    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

    Note: Please follow the steps in our [documentation] to enable e-mail notifications if you want to receive the related email notification for this thread.