Microsoft Lync Online users may notice that their contact list is empty or read-only after their Microsoft Exchange mailbox is disconnected or unlicensed. When you try to add, remove, or change contacts or groups in the user's contact list in this situation, the user receives the following error message: Cannot add, remove, or move contacts or groups at this time. Please try again later.
If the user had a contact photo associated with the Exchange mailbox, the photo is now unavailable to other contacts.
In Microsoft Office 365, both Lync Online and Microsoft Exchange Online work together to store users' contacts and photos as part of their Exchange mailbox. This is known as the Unified Contact Store (UCS), and when the user’s Exchange mailbox becomes unavailable, Lync can no longer take advantage of UCS to add, remove, or change the Lync contact list.
About the Author
Darrin Hanson has been a Microsoft Technical Readiness Engineer for Lync Online in Office 365 for three years, with a total of seven years supporting Office Communications Server, Lync, and Lync Online. He spends much of his time creating robust solution assets for Lync Online, but also enhancing diagnostic and troubleshooting tools to help identify and resolve issues quicker.