I am using Windows 7 Service pack 1, 64 bits.
I downloaded Tor (last version 6.5) on a oficial webpage.
I can't install program.
" Error opening file for writing : C:\Program Files (x86)\Tor Browser\Browser\AccesibleMarshall.dll
Click Abord to stop the installation Retry to try again, or Ignore to skip this file.
Thanks for your help and explanation.