Moving this discussion to the Adobe Digital Editions forum.
Vhall541 can you please provide the exact error message you are receiving and the device you are inquiring about? You can find a list of supported devices at http://blogs.adobe.com/digitalpublishing/supported-devices.
Is it ADE and the computer itself you cannot authorize, or the device?
A common solution to ADE/computer authorization problems works if ADE gets itself into a semi-authorized state.
- remove any vestigal authorization it has, using ctrl-shft-D to ADE (cmd-shift-D if on a Mac)
- restart ADE
- try again to authorize
I had the same problem myself with version 2.0: ADE would not allow me to authorize my computer. I received the error message: E_AUTH_NOT_READY. The fact is, my computer is already authorized. Version 2.0 did recognize my Sony eReader however.
Following advice in a different thread, I uninstalled Version 2.0 and installed Version 1.7.2. It recognized my eReader successfully. It also automatically recognized that my computer was already authorized and told me that I did not need to authorize.
I'm going to stick with Version 1.7.2 until a new version is released. The problem seems to lie with version 2.0 authorization.
I hope the next version upgrades without requiring an uninstall because when I uninstalled 2.0 before reinstalling, I lost my library.