since the last Activation I'm now facing the problem that my system is not activate after using MTK252 anymore what went wrong?
a/v program probably blocking it. If you don't know your way around 'allowing' it through the security, you can try running mtk and changing defaults to the tap adapter.
tap adapter whats meant here? I did the exeption last time i used mtk.... so do I renew this time again?? What if my system says: "You must activate today. Activate Windows now. Product ID: 00392-........... Change product key." is this how it worked? with mtk.
If i see this correct OP uses Win 7 so Local Host Bypass isn't the issue. Try to reactivate with MTK and post any errors if appear.
OP didn't really say, but if it is Win7, an mgadiag report would be a good starting point. Looking back at the post history, OP has had problems in April and July, so perhaps his 180 days on kms have expired. An mgadiag report in April showed tampered files