Hi Gaurav,
Welcome to our forum.
By this issue, please restart “Lync Server Response Group” service in service management.
Then run the following command to do update:
Update-CsUserDatabase
Update-CsAddressBook
If the issue persist, please wait for 8 hours because response group
If there are any questions or issues, please be free to let me know and we will pleasure to help you. If the above suggestion are helpful to you, please make it as answer so that someone who has similar issue could find this thread as soon as possible.
Best Regard,
Jim Xu
TechNet Community Support
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