The process cannot access the file ... - Veeam Software
https://www.veeam.com/kb196019.11.2014 · File Locks can come from a variety of sources. If a job is unexpectedly terminated due to a network drop, it is plausible that the Veeam Agent finished but never received a terminate command. If the repository uses deduplication, the storage may have too aggressive of a profile active and is locking the file(s) as soon as Veeam releases a lock ...