Windows Restore Error - ERR=The process cannot access the file because it is being used by another process
Occassionally on Windows servers, users will see the following restore error in the job logs
"ERR=The process cannot access the file because it is being used by another process."
This is a known issue with windows in certain scenarios, and impacts various services in various scenarios
Microsoft has outlined the issue here, along with the process involved to identify and resolve the issue
https://support.microsoft.com/en-ca/help/890015/you-receive-a-the-process-cannot-access-the-file-because-it-is-being-used-by-another-process-error-message-when-you-try-to-start-a-web-site-in-the-internet-information-services-mmc-snap-in