See also Delete Temporary Files

See also Delete Windows Folders That Are Too Long

Take ownership as the logged in user, usually as an administrator:

takeown /F <foldername> /R /D y

Reset the ACLs:

icacls <foldername> /T /C /Q /RESET

If you can't delete a file, often getting the error:

Error 0x80070780 The file cannot be accessed by the system.

Try this:

1. Remove attributes using Windows Explorer → Right-Click the File → Properties
2. In PowerShell, use the command Remove-Item <filename>