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This error occurs if a trial key file is transferred from one computer to another. This violates the usage terms of the trial.

  • If you need Dr.Web to protect a different computer, request a trial for that computer.
  • If you have already used your right to one trial per year per computer, and you wish to keep your system protected, purchase a Dr.Web license.


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The Russian developer of Dr.Web anti-viruses
Doctor Web has been developing anti-virus software since 1992
Dr.Web is trusted by users around the world in 200+ countries
The company has delivered an anti-virus as a service since 2007
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2003 — 2021

Doctor Web is the Russian developer of Dr.Web anti-virus software. Dr.Web anti-virus software has been developed since 1992.

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