You can use your existing Adobe ID to authorize your new computer as well. Each ID has maximum activation of 6 computers and 6 devices.
How to Activate?
- Launch ADE
- Select the menu item Help-->Authorize Computer...
- Enter your valid existing Adobe ID credentials to authorize.
Hope this helps you.
this is apparently wrong, since I get a message wich says that it necessary to use an AD ID whcih is not already used for other computer.
This reason behind this error message. This device is activated with an Anonymous account which has a unique UUID stored in the registry. When you try to activate the same machine with different Adobe ID (UUID), this error message will be thrown.
Solution1: Deactivate the anonymous account and activate with the existing Adobe ID
Note: In this case, the books you have fulfilled with the Anonymous account will be permanently lost.
If you like to continue reading the books fulfilled by Anonymous account, you have to follow solution 2
Solution 2: You have to assign the UUID of anonymous ID to newly created Adobe ID. For more information please refer to, Adobe Digital Editions – Anonymous Activation
Hope this solves your issue.
How do I deactivate the anonymous account?