SQL Server 2012 running on Windows Server 2012 R2.
Microsoft SQL Server 2012 (SP4-GDR) (KB4583465) - 11.0.7507.2 (Intel X86)
This occurs occasionally, maybe once every 2 weeks or so, the DB server does not accept new connections.
Existing connections are OK, but it will not accept new ones.
It requires a restart of the SQL Server service and then it all works again.
I'm looking to see if this is a known bug?
How to diagnose further?
Thanks
Disclaimer - I'm really a developer and part time DBA as there is no one else to do this !