It did that with me as well when I had IE and Chrome both open...open chrome come click on link at first page.....asking for decryption key should go away
There is one thing I do not understand, how is it that has leaked the install.wim and not the .iso original? And how long do I have to activate Windows 8.1??
No activator yet, because activation of Windows 8.1 is based on KMS v6, wait a few days or one-two weeks for activator.
Most of the guys leaking and using it, are able to deploy the WIM or create an ISO. Would guess it´s easier to leak the WIM only. There is not much more needed, as most have one of the leaked ISOs already .
Are you using imagex? if so, what version, might not be compatible with the WIM. Dump the WIM in a 9471 ISO and try that method, since 9471 is Pro.