This License Key is for Version 10x.To upgrade to version 11x, please visit the following link http://www.escanav.com/mwscnew/versionupgrade.asp or email to support@mwti.net" after upgrading to eScan 11 version
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The key which the user is trying to enter might be of version 10 which can not be registered on eScan version 11.
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It is also possible that the Incorrect edition of eScan installed on your system. Please check the product name of eScan purchased. If you have no details about your purchased product. Please contact Support and provide your license key. Also you can join Online Chat for further help