KB1857: Unable to allocate processing resources
https://www.veeam.com/kb185713.02.2014 · Cause. This is generally caused when there are no backup proxies available to process the job. Reasons for this include: Too many jobs are running at a time for the number of concurrent tasks set across all proxies available to the job that failed. Proxies may be unavailable (Shutdown, not connected to the network, etc.).