DavidR
6
That would only exclude it in the on-access file system shield not for any on-demand related scan/s. For global exclusion it is in the avastUI > Settings > General - scroll down and expand the Exclusions section and enter the File path.
Crucially you didn’t include the exclusion text, as Igor suggested, then it can be checked for validity.
Also note if a file that has been legitimately excluded from scanning actually is a process that interacts with other files outside of that folder then those files wouldn’t be excluded.