Using New Outlook on Windows for personal email, calendar, and contact management
Dear S6763
Good day! Thank you for posting to Microsoft Community. We are glad to assist!
Based on your description regarding "Public Folders Issue". Kindly note that there is an incident that was posted to the Service Health Dashboard (SHD) as incident EX680770, estimated starting at October 12, 2023 at 3:03 AM GMT+8. The user experience of this incident is: Users may receive a "cannot create folder" message when creating public folders in the Outlook desktop client
Title: Users may receive a "cannot create folder" message when creating public folders in the Outlook desktop client
User impact: Users may receive a "cannot create folder" message when creating public folders in the Outlook desktop client.
More info: Users are incorrectly presented with this error, as the folder is successfully created after a few seconds.
Current status: After additional review, we believe a mailbox replication issue may be occurring, which would result in the public folder not being able to be found initially and the error displaying, before it resolves itself momentarily after. We're gathering logs from our mailbox replication service for review to confirm this theory and determine our next steps.
Scope of impact: Any user may receive a message stating "cannot create the folder" when creating public folders in the Outlook desktop client.
Tenant administrators can view current information and updates on SHD at the link here Service health - Microsoft 365 admin center
For affected customers to easily identify the information here, this thread will be closed. You may subscribe to this thread or refer to SHD for updated information. I will also post back here once the issue is resolved on SHD.
Thanks in advance for your understanding! Your patience and cooperation will be highly appreciated. Have a nice day!
Best regards,
Kerry Chen | Microsoft Community Moderator