Is rikla-support@adobe.com the correct adress to activate the public key.

I reviewed the link that you posted. You seem to have missed important info. It says to use that address to contact Adobe ONLY IF you are developing a DRM plugin. it also mentions there is a $50,000 annual fee in this case. It is a pity if this info is wrong but here is more info on DRM plugins, a path for Adobe's partner companies: Developing digital rights management (DRM) plug-ins | Adobe Developer Connection  . Otherwise you complete the form provided. However, the advice in the other reply to you is crucial: I think you may be just trying not to buy Acrobat, and that won't work.

Finally you should note that Adobe Customer Service are not qualified to assist with developer queries. You would need to raise a case with developer support. I understand there is a $200 fee for this. Please let us know if you find out how to do this.

i want to run the basic plugin copiled in Visul Studio 2010 it a plugin out of adobe acrobat reader SDK. It starts the plugin in acrobat reader 11 or dc and after 3sec. i get invalided plugin

Based on what you wrote, I assume you do not have Adobe Acrobat to test your plug-in, and you intend to get a plug-in working with the free Adobe Reader. This is not how plug-in development for the Reader works. You need to have Adobe Acrobat to develop and test the plug-in, and once finished, you then apply the RIKLA key, which will enable the plug-in to run in Reader.

You do not just "get" a key from Adobe, you need to apply for one, describing  your plug-in's functionality. Also, such a key is not free. The cost depends on the functionality that you are implementing in your plug-in.

Again, you need Adobe Acrobat to develop a plug-in, and you would never try to run the basic or starter plug-in in Reader - that's way too expensive. You would do all this "climbing the learning curve" in Acrobat and once you have a good understanding of the plug-in API and the ins and outs of creating an Acrobat plug-in, then you start with the actual plug-in development - again, in Adobe Acrobat.

It is however important that you make sure that Adobe is actually willing to grant you a license for the functionality you want to implement before you waste any time developing something that you may not be able to get licensed.