Hello @Nikhil Lotia ,
What's your RDS environment? Is it session-based deployment or VDI deployment?
How did you configure high availability for connection broker using azure SQL database?
Does it work if you try the following solution:
MultiSubnetFailover=TRUE isn't correct, and to use =YES instead;
Set up the license server type (per user or per computer).
For your reference:
https://social.technet.microsoft.com/Forums/ie/en-US/611af73a-e224-47f6-949d-0f2acdd3ee37/rds-2016-cb-in-ha-getting-config-sync-failed?forum=winserverTS
https://learn.microsoft.com/en-us/sql/relational-databases/native-client/applications/using-connection-string-keywords-with-sql-server-native-client?view=sql-server-ver15
https://social.technet.microsoft.com/Forums/ie/en-US/320a7167-899e-4700-a254-15716c6952c6/remote-desktop-broker-config-sync-error?forum=winserverTS
https://blog.alschneiter.com/2015/03/02/rd-connection-broker-config-sync-failed-following-error-occurred-0x88250001/
Best regards,
Leila
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