If the installer simply won't work, skip the installation process entirely. Download the version.
If none of the above steps work, try reinstalling FileZilla:
When searching for FileZilla on Google, you may see "Sponsored" ads at the top of the results. These often lead to fake download sites that bundle FileZilla with adware, viruses, or the installer, which is difficult to remove.
If the installer simply won't run, the solution often lies in temporary security adjustments:
: For FileZilla Server, the installation directory must be owned by the SYSTEM user or an administrator. If you see a CheckConfigDirOwnership error, you may need to manually adjust folder permissions. Quick Install Checklist How to Install Filezilla On Windows 11