Hi Richard,

C:\Users\<<usernameremoved>>\AppData\Local\Temp\FileCrawler is a temporary folder for processing files, and it is expected to be cleared after each file processed. Finally, the processed data will be saved in your D: .

According to your description, there might be some unknown processes (like Anti-Virus software) using your C:\Users\<<usernameremoved>>\AppData\Local\Temp\FileCrawler. You can use tools like Process Explorer to check which process hold the files.

Also, event logs under Applications and Services Logs/Laserfiche/Laserfiche-FederatedSearch-Service/Admin can help to diagnose issues in Federated Search. You can paste event log here, so we can help to locate the problem.

As a workaround for now, you can manually remove C:\Users\<<usernameremoved>>\AppData\Local\Temp\FileCrawler, or just restart service Laserfiche Federated Search Crawler Service.