Synchronization issue

Hi SV&&&,

Thank you for posting your issue on Microsoft Community forum. I understand that you receive this synchronization error log under the Sync Issues folder in Outlook.

May I double confirm whether you have any problem to sending/receiving emails or have any problem to delete/change any items by using Outlook/Outlook Web App? Please provide us with detailed information about the exact issue such as email sending/receiving (except this Synchronization error Log) for further analysis.

However, in most cases these errors are logged in the Sync Issues folder when the items no longer exist in the Exchange mailbox or the item was already deleted from the mailbox. If you don't have any problem to delete/change any items or sending/receiving emails. In these cases, the error can be safely ignored.

Regarding this point, we would truly appreciate your kind understanding.

Best regards,

Shyamal

Good day,

We have the same synchronization errors with some employees. These are always public folders that are stored in the favorites. The automatic synchronization then no longer works. We then temporarily deleted the favorites and added new ones. However, this only fixes the error temporarily. Do you have a solution for us? We use Office 365. The errors have been occurring since December 31, 2021. Many thanks. Kind regards

this is synchronization issues with public folder on on workplace's network especially the folder which our department used for receiving fax. Sometimes faxes that came thru would still read as unread even thought it has been read/reviewed. Sometimes faxes deletes on its own after a day. We use office 365. please provide us a solution to resolve these issues. thanks.

Hi SV&&&,,

Thanks for the update. May I know which Outlook 365 desktop client version are you using please provide us with the detailed information about this, see About Office: What version of Office am I using?

Does this issue recently happen such as after update to latest version of Outlook 365 desktop client?

@C.Gellermann, as you mentioned that "The errors have been occurring since December 31, 2021". If the issue happen after latest update you may use the workaround revert to earlier workable version if it is acceptable for you. Here is the article which has detailed steps listed: How to revert to an earlier version of Office

Note: If your organization IT team/Office 365 admin manage Office deployment please contact them for revert to earlier version.

Your patience and understanding will be highly appreciated.

Best regards,

Shyamal

I too have the same issue with a public folder calendar stored in the a profile's Favorites folder. The public folder displays all content, but the Favorites folder version does not. Items added to the Favorites folder version are not uploaded and new items added to the public folder are not downloaded to the Favorites version.

Here is a sync log for the problematic PC:

8:30:27 Synchronizer Version 16.0.14701

8:30:27 Synchronizing Mailbox 'XXXX'

8:30:27 Synchronizing full items in folder 'Inbox'

8:30:27 Synchronizing local changes in folder 'Favorite Calendar'

8:30:27 Uploading to server 'https://outlook.office365.com/mapi/emsmdb/?MailboxId=XXXX'

8:30:27 Error synchronizing folder

8:30:27                    [80004005-501-80004005-230]

8:30:27                    The client operation failed.

8:30:27                    Microsoft Exchange Information Store

8:30:27                    For more information on this failure, click the URL below:

8:30:27                    https://www.microsoft.com/support/prodredirect/outlook2000_us.asp?err=80004005-501-80004005-230

8:30:28 Done

This is happening on at least 2 PCs at the moment, I expect it is occurring on many more, but the users haven't noticed yet.

I deleted the profile via Control Panel...Mail with no success.

I deleted the Favorite folder entry and added it back with no success.

Thanks.

Ben