Aaprice1-Visitor11 years agoNov 18, 2014 6:11 PM UTCQuestionInvalid Host ID - MathCad 153 replies2010 viewsTranslate AllHi,I am trying to install mathcad 15 free 30 day trial, but I get an error when trying to obtain a trial license.Invalid host id errorAny help appreciatedOther