Just purchased the ESET IS, but can't use "download" links provided. I ran Windows 7 64 bit. The popped-up Windows Security logon window is not accepting the credentials provided in the email. I have searched for my issue on this forum. The same very problem found here: https://www.wilderssecurity.com/showthread.php?t=284204 but there is no solution posted. I tried to IM Rmuffler, the Eset Moderator. IM isn't working as well. All of this is very discouraging. Please respond ASAP, otherwise I'd need to call and ask for refund. -h0ping.