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I want to ask from where I can download the VLC ova machine , is there a download center or something like that ?
Yes, that's correct through accessing your download central portal and it's for free and no license is required for it.
You can download it from https://download.rsasecurity.com. If you do not have access to this site you will need to rewquest access at email@example.com. If you do have access but do not see it in your account you can submit a request at firstname.lastname@example.org to have it added to your account.