Every few minutes I get a repeat of an alleged synchronisation errorThis message repeats:-

Question

Tim Cummins 20

The following message repeats several times a day:

15:20:14 Synchroniser Version 16.0.20527

15:20:14 Synchronising Mailbox ’Tim Cummins’

15:20:14 Synchronising Hierarchy

15:20:15 Synchronising server changes in folder ’Ajouter_�_votre_agenda.ics’

15:20:15 Downloading from server ’https://outlook.office365.com/mapi/emsmdb/?MailboxId=00034001-ff’

15:20:15 SyncMonitor triggered for Ajouter_�_votre_agenda.ics (0x80004005)

15:20:15 Error synchronising folder

15:20:15 [80004005-501-4B9-560]

15:20:15 The client operation failed.

15:20:15 Microsoft Exchange Information Store

15:20:15 For more information on this failure, click the URL below:

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Answer 1

Hornblower409 18,575

15:20:15 Synchronising server changes in folder ’Ajouter_�_votre_agenda.ics’

Looks like you have subscribed to a published Internet Calendar and Outlook can't get a recent copy.

Do you see the ...votre_agenda.ics at File -> Account Settings -> Account Settings -> | Internet Calendars | ?

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Also check using Outlook Web https://outlook.cloud.microsoft/ for that Calendar under My Calendars or Other Calendars.

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If you can't find it in those places, come back and leave a comment on this Answer, we'll look for some less likely sources.

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