"Proxy offline time exceeded” error after updating Veeam Backup for Microsoft 365 to version 4c

Challenge After updating Veeam Backup for Microsoft 365 4c build 4.0.1.531 backups start to fail with the "Proxy offline time exceeded". Cause At the end of every month, Veeam Backup for Microsoft 365 collects licensing information. If your Veeam Backup for Microsoft 365 server is installed on a...