Incorrect credentials used to log in to the server
As the backup process is based on the BACPAC export, workers must connect using any SQL account to access the database.
- For backup operations, the selected account must have access to all protected databases.
- For restore operations, the account must have full access to the newly created (restored) databases.
Workers cannot reach the server due to networking issues
The virtual network where all Veeam Backup for Azure workers are running must be enabled in the SQL server firewall.
In case of the SQL Managed Instances, enable the public endpoint in the instance networking options and then configure the security group of the network where the SQL Managed Instance is connected.
If there are any other firewalls between Veeam Backup for Azure and the SQL Servers or SQL Managed Instances, they must be configured as well.
- Connections to SQL Servers use port 1433.
- Connection to SQL Managed Instances run on port 3342.