KB1174: RPC function call failed. The RPC server is ...
www.veeam.com › kb1174Aug 23, 2011 · Veeam Backup & Replication however is not able to add firewall exclusions to hardware or third-party software firewalls. The most common ports that cause this issue when using Application-Aware Image Processing are the Dynamic RPC ports that the temporary guest agents are assigned. These ports are: 1025 to 5000 (for Microsoft Windows 2003)
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.