[JSWolf]

Originally Posted by calibreian

Thanks for the suggestion, I did change the cache directory with the environmental variables, both to another folder in C:\ as well as on another drive just to test on E:\. I got the same result:

Traceback (most recent call last):
File "calibre\srv\books.py", line 127, in job_done
PermissionError: [WinError 32] The process cannot access the file because it is being used by another process: '\\\\?\\E:\\Calibre Cache Test\\srvb\\s\\kydei6x4' -> '\\\\?\\E:\\Calibre Cache Test\\srvb\\f\\6e6270df89791c3b538c808cdbc9756ef60 d6dd1'

Here is the way to find out what is using your files.