I searched the forum but not found any info on these two errors. Anyone come across either of these during upgrade? Installation was successful with no errors on DB upgrade but deployment server would not start.

First one, nothing has changed on the network. Using same FQDN in the upgrade wizard as the current server, firewall rules are all set per system requirements. Cert is valid.

The other main error from the logs is with deployment server extensions not connecting to SQL db. We are using windows creds for this which works fine on 15.2. Testing connection to DB is green in the admin utility.

2022-07-18 23:38:16,755 (0x00001a28) [ERROR] [CDeploymentSrv::InitDeploymentServerExtension] Error initializing Deployment Server Extensions: System.Data.SqlClient.SqlException (0x80131904): Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'.

System info:

MC: Server 2016, separate Azure SQL VM instance. Latest Java 11 LTS.