Question
Cannot log into PTC account in license activation program for mathcad
If I try to log into my PTC account in the license activation program for Mathcad Prime 11 I get this message: "the http request was not allowed with client authentication scheme anonymous"
I tried logging in from different netwotks, deactivating the firewall and all anti-virus programs as well as setting a new password. With my data I can log into my PTC account at the website, so the data is correct.

