We just upgraded one of our SQL servers (we did a fresh format from Server 2008 R2 to Server 2016 and went from SQL 2005 SP4 to SQL 2017. We have SQLSafe 126.96.36.1999 with the license key update installed. SQLSafe Management Console sees the server but every backup fails with:
Server instance: MIAMI, Database: WWWSites
I had the same issue when backing up a SQL 2017 Instance. Make sure you have the latest CU installed on the 2017 server. I think the issue was resolved with CU4 but I went ahead and installed CU10 and have not had any issues.
CU10 fixed it! Thanks!