“ActiveX is automatically deleted in Windows 10 (x86) when a SilentCleanup task is run.
In Windows 8.1 and earlier versions, SilentCleanup was run only when free disk space fell below 10 percent of the entire disk space. However, in order to improve the user experience in Windows 10, SilentCleanup is also run when the system enters the idle state.
When you experience this issue, the following folders are cleaned up by the SilentCleanup task:
Downloaded Program Files
Temporary Internet Files”