On this tab, you can perform a test that verifies that Kentico CMS has access to the file system. The test consists of creation of a folder and a file, modification of the created file and deletion of the folder and the file. To perform the test, just click the Test files button.

 

If the test detects that Kentico CMS is not able to access the file system, you can find a solution to this problem in the DB Database setup -> Disk permissions problems chapter of this guide.