I tried to delete my resource group, but this process after deletion of VM. The current result that not only I need to delete Sync group specifically (why?), it is simply fail (after waiting a few minutes) with the following error.
Server endpoint 'FileServerLocal'
Details: The operation 'Delete server endpoint' failed with the following error: The server did not pick up the new configuration. Check if the server is turned off, or is having service connectivity issues. If the server has been decommissioned, unregister the server.
Operation identifier: 7551417b-6bf1-40fe-8a91-c795eca350af
Server identifier: 55d07e48-316f-48c5-b393-bccc5f1f1db5
Error code: 0x80C87013 MgmtServerJobExpired
Correlation ID: de89d450-7fa0-42c9-bb9d-dbe799f90e64
Request ID: 8eb47eb4-b3a5-4851-b87f-d133b120c45e
Needeless to say, none of offer options aren't relevant at all. There is also no such functionality of unregister the server.