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On your computer’s hard drive, save the archive containing the key file that was attached to the email.
Then, if you’ve purchased a new license to renew your previous one, delete the old license and replace it with the new one:
Doctor Web is the Russian developer of Dr.Web anti-virus software. Dr.Web anti-virus software has been developed since 1992.
2-12А, 3rd street Yamskogo polya, Moscow, Russia, 125124