KB3077: Veeam Agent backup job fails with "Failed to call RPC ...
www.veeam.com › kb3077Dec 26, 2019 · When a backup job starts, Veeam Backup & Replication connects to the Veeam Agent machine to initiate the backup process. The connection is based on Windows API and uses RPC and WMI queries. If Microsoft Windows is low on desktop heap memory for services running under LocalSystem account, Microsoft Windows can reject the incoming queries.