Before purchasing an advanced tool for Auditing Windows File Server, you can try it in two ways. You can try the Freeware edition of LepideAuditor for File Server. It is free forever, though its reports carry limited information only. The other option is to try the 15-day trial version of its Enterprise edition. It can audit two file servers till the completion of the trial period. Then you can purchase it to use with all your file servers forever.