KB1960: The process cannot access the file because it is ...
https://www.veeam.com/kb196019.11.2014 · In this example, there is a PID for the VeeamAgent process, meaning Veeam has a lock on this file. The agent responsible for this lock can be confirmed in logging, or with the assistance of support. The PID of a given agent exists at the beginning of any source or target agent log. In the case of file locks, the target agent log should be examined.